/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-Before.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-file-item-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 07:02:54,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 07:02:54,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 07:02:54,469 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 07:02:54,469 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 07:02:54,470 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 07:02:54,471 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 07:02:54,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 07:02:54,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 07:02:54,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 07:02:54,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 07:02:54,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 07:02:54,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 07:02:54,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 07:02:54,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 07:02:54,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 07:02:54,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 07:02:54,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 07:02:54,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 07:02:54,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 07:02:54,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 07:02:54,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 07:02:54,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 07:02:54,485 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 07:02:54,487 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-19 07:02:54,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 07:02:54,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 07:02:54,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 07:02:54,493 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-Before.epf [2022-01-19 07:02:54,509 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 07:02:54,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 07:02:54,510 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 07:02:54,510 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 07:02:54,511 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 07:02:54,511 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 07:02:54,511 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 07:02:54,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 07:02:54,511 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 07:02:54,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 07:02:54,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 07:02:54,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 07:02:54,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 07:02:54,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 07:02:54,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 07:02:54,512 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 07:02:54,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 07:02:54,512 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 07:02:54,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 07:02:54,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 07:02:54,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 07:02:54,512 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 07:02:54,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 07:02:54,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 07:02:54,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 07:02:54,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 07:02:54,513 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 07:02:54,513 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 07:02:54,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 07:02:54,513 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 07:02:54,513 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 07:02:54,513 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=BEFORE [2022-01-19 07:02:54,513 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 07:02:54,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 07:02:54,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 07:02:54,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 07:02:54,688 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 07:02:54,688 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 07:02:54,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-file-item-symm.wvr.c [2022-01-19 07:02:54,741 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70e765d45/07f1699ef7db48139cb81a4e9b2cc88c/FLAGcc887714e [2022-01-19 07:02:55,074 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 07:02:55,074 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-file-item-symm.wvr.c [2022-01-19 07:02:55,078 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70e765d45/07f1699ef7db48139cb81a4e9b2cc88c/FLAGcc887714e [2022-01-19 07:02:55,089 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70e765d45/07f1699ef7db48139cb81a4e9b2cc88c [2022-01-19 07:02:55,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 07:02:55,092 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 07:02:55,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 07:02:55,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 07:02:55,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 07:02:55,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 07:02:55" (1/1) ... [2022-01-19 07:02:55,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@618b9a1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:02:55, skipping insertion in model container [2022-01-19 07:02:55,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 07:02:55" (1/1) ... [2022-01-19 07:02:55,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 07:02:55,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 07:02:55,257 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-file-item-symm.wvr.c[2495,2508] [2022-01-19 07:02:55,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 07:02:55,266 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 07:02:55,281 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-file-item-symm.wvr.c[2495,2508] [2022-01-19 07:02:55,283 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 07:02:55,292 INFO L208 MainTranslator]: Completed translation [2022-01-19 07:02:55,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:02:55 WrapperNode [2022-01-19 07:02:55,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 07:02:55,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 07:02:55,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 07:02:55,293 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 07:02:55,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:02:55" (1/1) ... [2022-01-19 07:02:55,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:02:55" (1/1) ... [2022-01-19 07:02:55,320 INFO L137 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 158 [2022-01-19 07:02:55,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 07:02:55,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 07:02:55,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 07:02:55,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 07:02:55,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:02:55" (1/1) ... [2022-01-19 07:02:55,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:02:55" (1/1) ... [2022-01-19 07:02:55,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:02:55" (1/1) ... [2022-01-19 07:02:55,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:02:55" (1/1) ... [2022-01-19 07:02:55,338 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:02:55" (1/1) ... [2022-01-19 07:02:55,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:02:55" (1/1) ... [2022-01-19 07:02:55,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:02:55" (1/1) ... [2022-01-19 07:02:55,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 07:02:55,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 07:02:55,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 07:02:55,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 07:02:55,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:02:55" (1/1) ... [2022-01-19 07:02:55,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 07:02:55,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:02:55,373 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-19 07:02:55,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-19 07:02:55,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 07:02:55,398 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 07:02:55,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 07:02:55,398 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 07:02:55,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 07:02:55,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 07:02:55,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 07:02:55,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 07:02:55,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 07:02:55,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 07:02:55,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 07:02:55,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 07:02:55,400 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 07:02:55,500 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 07:02:55,502 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 07:02:55,720 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 07:02:55,727 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 07:02:55,727 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 07:02:55,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 07:02:55 BoogieIcfgContainer [2022-01-19 07:02:55,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 07:02:55,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 07:02:55,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 07:02:55,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 07:02:55,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 07:02:55" (1/3) ... [2022-01-19 07:02:55,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@246ef8e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 07:02:55, skipping insertion in model container [2022-01-19 07:02:55,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:02:55" (2/3) ... [2022-01-19 07:02:55,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@246ef8e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 07:02:55, skipping insertion in model container [2022-01-19 07:02:55,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 07:02:55" (3/3) ... [2022-01-19 07:02:55,737 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-file-item-symm.wvr.c [2022-01-19 07:02:55,744 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 07:02:55,744 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 07:02:55,745 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 07:02:55,786 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,786 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,787 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,787 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,787 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,789 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,799 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,799 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,799 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,799 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,811 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,812 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,812 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,812 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,812 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,812 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,812 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,812 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,812 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,813 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,813 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,813 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,813 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,813 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,813 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,813 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,813 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,813 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,814 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,814 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,814 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,814 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,814 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,814 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,814 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,814 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,814 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,814 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,815 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,815 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,815 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,815 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,815 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,815 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,815 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,815 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,815 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,815 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,816 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,816 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,816 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,816 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,816 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,816 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,816 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,816 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,816 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,816 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,817 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,817 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,817 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,817 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,817 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,817 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,817 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,817 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,818 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,818 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,818 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,818 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,818 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,818 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,818 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,819 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,819 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,819 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,819 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,819 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,819 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,819 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,819 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,819 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,820 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,820 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,820 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,820 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,820 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,820 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,821 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,821 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,821 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,821 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,821 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,821 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,821 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,821 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,822 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,822 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,822 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,822 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,822 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,822 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,822 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,822 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,823 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,823 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,823 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,823 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,823 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,823 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,824 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,824 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,824 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,824 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,825 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,825 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,825 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,825 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,825 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,826 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,826 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,826 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,826 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,826 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,826 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,826 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,827 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,827 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,827 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,827 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,827 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,827 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,828 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,828 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,828 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,828 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,828 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,828 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,828 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,828 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,828 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,828 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,829 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,829 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,829 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,829 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,829 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,829 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,829 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,829 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,829 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,829 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,830 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,830 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,830 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,830 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,830 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,830 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,830 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,830 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,830 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,830 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,830 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,831 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,831 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,831 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,834 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,834 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,835 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,835 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,835 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,835 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,835 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,835 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,835 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,835 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,835 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,835 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,836 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,836 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,836 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,836 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,836 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,837 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,837 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,837 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,837 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,837 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,838 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,838 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,838 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,838 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,838 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,838 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,838 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,839 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,839 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,839 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,839 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,839 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,840 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,840 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,840 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,842 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,842 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,842 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,842 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,843 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,843 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,843 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,843 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,843 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,843 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,843 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,844 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,844 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,845 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,845 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,847 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,849 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,849 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,849 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,851 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,851 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,851 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,851 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,853 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,853 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,853 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,854 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,854 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,854 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,854 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,854 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,854 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,854 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,854 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,854 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,854 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,854 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,855 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,855 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,860 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,860 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,860 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,860 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,860 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,861 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,861 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,861 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,861 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,861 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,861 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,861 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,861 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,861 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,861 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:02:55,868 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-19 07:02:55,926 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 07:02:55,944 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-19 07:02:55,944 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-19 07:02:55,954 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 198 places, 210 transitions, 436 flow [2022-01-19 07:02:56,027 INFO L129 PetriNetUnfolder]: 19/208 cut-off events. [2022-01-19 07:02:56,032 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 07:02:56,038 INFO L84 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 208 events. 19/208 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 414 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 131. Up to 2 conditions per place. [2022-01-19 07:02:56,038 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 210 transitions, 436 flow [2022-01-19 07:02:56,049 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 187 places, 199 transitions, 410 flow [2022-01-19 07:02:56,106 INFO L129 PetriNetUnfolder]: 19/198 cut-off events. [2022-01-19 07:02:56,106 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 07:02:56,107 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:02:56,107 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:02:56,108 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:02:56,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:02:56,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1054999512, now seen corresponding path program 1 times [2022-01-19 07:02:56,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:02:56,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563037632] [2022-01-19 07:02:56,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:02:56,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:02:56,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:02:56,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:02:56,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:02:56,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563037632] [2022-01-19 07:02:56,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563037632] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:02:56,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:02:56,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:02:56,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411501377] [2022-01-19 07:02:56,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:02:56,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:02:56,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:02:56,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:02:56,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:02:56,550 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:02:56,556 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 199 transitions, 410 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:56,556 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:02:56,556 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:02:56,558 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:02:57,031 INFO L129 PetriNetUnfolder]: 113/576 cut-off events. [2022-01-19 07:02:57,032 INFO L130 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2022-01-19 07:02:57,034 INFO L84 FinitePrefix]: Finished finitePrefix Result has 861 conditions, 576 events. 113/576 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2995 event pairs, 35 based on Foata normal form. 23/565 useless extension candidates. Maximal degree in co-relation 655. Up to 123 conditions per place. [2022-01-19 07:02:57,037 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 81 selfloop transitions, 5 changer transitions 44/287 dead transitions. [2022-01-19 07:02:57,037 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 287 transitions, 876 flow [2022-01-19 07:02:57,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-19 07:02:57,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-01-19 07:02:57,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 4328 transitions. [2022-01-19 07:02:57,058 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8243809523809524 [2022-01-19 07:02:57,058 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 4328 transitions. [2022-01-19 07:02:57,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 4328 transitions. [2022-01-19 07:02:57,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:02:57,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 4328 transitions. [2022-01-19 07:02:57,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 173.12) internal successors, (4328), 25 states have internal predecessors, (4328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:57,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 210.0) internal successors, (5460), 26 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:57,092 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 210.0) internal successors, (5460), 26 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:57,093 INFO L186 Difference]: Start difference. First operand has 187 places, 199 transitions, 410 flow. Second operand 25 states and 4328 transitions. [2022-01-19 07:02:57,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 287 transitions, 876 flow [2022-01-19 07:02:57,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 287 transitions, 848 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 07:02:57,104 INFO L242 Difference]: Finished difference. Result has 229 places, 193 transitions, 473 flow [2022-01-19 07:02:57,105 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=473, PETRI_PLACES=229, PETRI_TRANSITIONS=193} [2022-01-19 07:02:57,109 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 42 predicate places. [2022-01-19 07:02:57,109 INFO L470 AbstractCegarLoop]: Abstraction has has 229 places, 193 transitions, 473 flow [2022-01-19 07:02:57,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:57,110 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:02:57,110 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:02:57,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 07:02:57,110 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:02:57,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:02:57,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1250873480, now seen corresponding path program 1 times [2022-01-19 07:02:57,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:02:57,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431653355] [2022-01-19 07:02:57,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:02:57,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:02:57,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:02:57,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:02:57,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:02:57,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431653355] [2022-01-19 07:02:57,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431653355] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:02:57,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:02:57,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 07:02:57,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677849763] [2022-01-19 07:02:57,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:02:57,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 07:02:57,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:02:57,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 07:02:57,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 07:02:57,192 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-01-19 07:02:57,193 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 193 transitions, 473 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:57,193 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:02:57,193 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-01-19 07:02:57,193 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:02:57,256 INFO L129 PetriNetUnfolder]: 67/631 cut-off events. [2022-01-19 07:02:57,256 INFO L130 PetriNetUnfolder]: For 623/632 co-relation queries the response was YES. [2022-01-19 07:02:57,259 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1081 conditions, 631 events. 67/631 cut-off events. For 623/632 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3791 event pairs, 20 based on Foata normal form. 0/575 useless extension candidates. Maximal degree in co-relation 1026. Up to 32 conditions per place. [2022-01-19 07:02:57,261 INFO L132 encePairwiseOnDemand]: 204/210 looper letters, 15 selfloop transitions, 3 changer transitions 0/199 dead transitions. [2022-01-19 07:02:57,261 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 199 transitions, 524 flow [2022-01-19 07:02:57,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 07:02:57,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 07:02:57,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-01-19 07:02:57,262 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-01-19 07:02:57,262 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-01-19 07:02:57,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-01-19 07:02:57,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:02:57,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-01-19 07:02:57,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:57,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:57,265 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:57,265 INFO L186 Difference]: Start difference. First operand has 229 places, 193 transitions, 473 flow. Second operand 3 states and 591 transitions. [2022-01-19 07:02:57,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 199 transitions, 524 flow [2022-01-19 07:02:57,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 199 transitions, 505 flow, removed 9 selfloop flow, removed 10 redundant places. [2022-01-19 07:02:57,271 INFO L242 Difference]: Finished difference. Result has 202 places, 196 transitions, 484 flow [2022-01-19 07:02:57,272 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=484, PETRI_PLACES=202, PETRI_TRANSITIONS=196} [2022-01-19 07:02:57,272 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 15 predicate places. [2022-01-19 07:02:57,272 INFO L470 AbstractCegarLoop]: Abstraction has has 202 places, 196 transitions, 484 flow [2022-01-19 07:02:57,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:57,273 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:02:57,273 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:02:57,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 07:02:57,273 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:02:57,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:02:57,273 INFO L85 PathProgramCache]: Analyzing trace with hash 728210236, now seen corresponding path program 2 times [2022-01-19 07:02:57,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:02:57,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151774482] [2022-01-19 07:02:57,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:02:57,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:02:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:02:57,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:02:57,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:02:57,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151774482] [2022-01-19 07:02:57,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151774482] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:02:57,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:02:57,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 07:02:57,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934917198] [2022-01-19 07:02:57,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:02:57,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 07:02:57,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:02:57,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 07:02:57,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 07:02:57,312 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-01-19 07:02:57,312 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 196 transitions, 484 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:57,312 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:02:57,312 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-01-19 07:02:57,312 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:02:57,374 INFO L129 PetriNetUnfolder]: 53/565 cut-off events. [2022-01-19 07:02:57,374 INFO L130 PetriNetUnfolder]: For 363/386 co-relation queries the response was YES. [2022-01-19 07:02:57,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 892 conditions, 565 events. 53/565 cut-off events. For 363/386 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2971 event pairs, 24 based on Foata normal form. 8/533 useless extension candidates. Maximal degree in co-relation 798. Up to 23 conditions per place. [2022-01-19 07:02:57,377 INFO L132 encePairwiseOnDemand]: 202/210 looper letters, 16 selfloop transitions, 5 changer transitions 0/202 dead transitions. [2022-01-19 07:02:57,378 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 202 transitions, 547 flow [2022-01-19 07:02:57,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 07:02:57,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 07:02:57,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-01-19 07:02:57,379 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-01-19 07:02:57,379 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-01-19 07:02:57,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-01-19 07:02:57,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:02:57,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-01-19 07:02:57,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:57,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:57,382 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:57,382 INFO L186 Difference]: Start difference. First operand has 202 places, 196 transitions, 484 flow. Second operand 3 states and 591 transitions. [2022-01-19 07:02:57,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 202 transitions, 547 flow [2022-01-19 07:02:57,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 202 transitions, 544 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 07:02:57,386 INFO L242 Difference]: Finished difference. Result has 205 places, 199 transitions, 525 flow [2022-01-19 07:02:57,387 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=525, PETRI_PLACES=205, PETRI_TRANSITIONS=199} [2022-01-19 07:02:57,388 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 18 predicate places. [2022-01-19 07:02:57,388 INFO L470 AbstractCegarLoop]: Abstraction has has 205 places, 199 transitions, 525 flow [2022-01-19 07:02:57,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:57,389 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:02:57,389 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:02:57,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 07:02:57,389 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:02:57,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:02:57,390 INFO L85 PathProgramCache]: Analyzing trace with hash 22916530, now seen corresponding path program 1 times [2022-01-19 07:02:57,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:02:57,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164076295] [2022-01-19 07:02:57,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:02:57,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:02:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:02:57,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:02:57,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:02:57,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164076295] [2022-01-19 07:02:57,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164076295] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:02:57,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:02:57,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:02:57,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541158029] [2022-01-19 07:02:57,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:02:57,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:02:57,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:02:57,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:02:57,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:02:57,569 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:02:57,570 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 199 transitions, 525 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:57,571 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:02:57,571 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:02:57,571 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:02:57,936 INFO L129 PetriNetUnfolder]: 190/1098 cut-off events. [2022-01-19 07:02:57,937 INFO L130 PetriNetUnfolder]: For 873/892 co-relation queries the response was YES. [2022-01-19 07:02:57,941 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2166 conditions, 1098 events. 190/1098 cut-off events. For 873/892 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7984 event pairs, 101 based on Foata normal form. 6/1041 useless extension candidates. Maximal degree in co-relation 2021. Up to 271 conditions per place. [2022-01-19 07:02:57,945 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 80 selfloop transitions, 5 changer transitions 34/283 dead transitions. [2022-01-19 07:02:57,946 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 283 transitions, 1078 flow [2022-01-19 07:02:57,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 07:02:57,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 07:02:57,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4125 transitions. [2022-01-19 07:02:57,952 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8184523809523809 [2022-01-19 07:02:57,952 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4125 transitions. [2022-01-19 07:02:57,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4125 transitions. [2022-01-19 07:02:57,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:02:57,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4125 transitions. [2022-01-19 07:02:57,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 171.875) internal successors, (4125), 24 states have internal predecessors, (4125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:57,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:57,969 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:57,969 INFO L186 Difference]: Start difference. First operand has 205 places, 199 transitions, 525 flow. Second operand 24 states and 4125 transitions. [2022-01-19 07:02:57,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 283 transitions, 1078 flow [2022-01-19 07:02:57,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 283 transitions, 1062 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-01-19 07:02:57,976 INFO L242 Difference]: Finished difference. Result has 248 places, 203 transitions, 608 flow [2022-01-19 07:02:57,977 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=608, PETRI_PLACES=248, PETRI_TRANSITIONS=203} [2022-01-19 07:02:57,978 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 61 predicate places. [2022-01-19 07:02:57,978 INFO L470 AbstractCegarLoop]: Abstraction has has 248 places, 203 transitions, 608 flow [2022-01-19 07:02:57,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:57,979 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:02:57,979 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:02:57,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 07:02:57,979 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:02:57,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:02:57,980 INFO L85 PathProgramCache]: Analyzing trace with hash 356652588, now seen corresponding path program 2 times [2022-01-19 07:02:57,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:02:57,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323114974] [2022-01-19 07:02:57,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:02:57,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:02:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:02:58,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:02:58,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:02:58,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323114974] [2022-01-19 07:02:58,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323114974] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:02:58,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:02:58,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:02:58,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883043595] [2022-01-19 07:02:58,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:02:58,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:02:58,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:02:58,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:02:58,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:02:58,104 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:02:58,106 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 203 transitions, 608 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:58,106 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:02:58,106 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:02:58,106 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:02:58,388 INFO L129 PetriNetUnfolder]: 197/1065 cut-off events. [2022-01-19 07:02:58,388 INFO L130 PetriNetUnfolder]: For 3326/3336 co-relation queries the response was YES. [2022-01-19 07:02:58,394 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3070 conditions, 1065 events. 197/1065 cut-off events. For 3326/3336 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7573 event pairs, 112 based on Foata normal form. 5/1005 useless extension candidates. Maximal degree in co-relation 2930. Up to 314 conditions per place. [2022-01-19 07:02:58,398 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 55 selfloop transitions, 12 changer transitions 25/256 dead transitions. [2022-01-19 07:02:58,398 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 256 transitions, 1253 flow [2022-01-19 07:02:58,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 07:02:58,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 07:02:58,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3430 transitions. [2022-01-19 07:02:58,403 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2022-01-19 07:02:58,403 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3430 transitions. [2022-01-19 07:02:58,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3430 transitions. [2022-01-19 07:02:58,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:02:58,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3430 transitions. [2022-01-19 07:02:58,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.5) internal successors, (3430), 20 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:58,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:58,415 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:58,416 INFO L186 Difference]: Start difference. First operand has 248 places, 203 transitions, 608 flow. Second operand 20 states and 3430 transitions. [2022-01-19 07:02:58,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 256 transitions, 1253 flow [2022-01-19 07:02:58,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 256 transitions, 1182 flow, removed 35 selfloop flow, removed 11 redundant places. [2022-01-19 07:02:58,426 INFO L242 Difference]: Finished difference. Result has 256 places, 213 transitions, 744 flow [2022-01-19 07:02:58,426 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=744, PETRI_PLACES=256, PETRI_TRANSITIONS=213} [2022-01-19 07:02:58,428 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 69 predicate places. [2022-01-19 07:02:58,428 INFO L470 AbstractCegarLoop]: Abstraction has has 256 places, 213 transitions, 744 flow [2022-01-19 07:02:58,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:58,429 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:02:58,429 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:02:58,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 07:02:58,429 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:02:58,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:02:58,430 INFO L85 PathProgramCache]: Analyzing trace with hash -33887738, now seen corresponding path program 1 times [2022-01-19 07:02:58,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:02:58,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528685018] [2022-01-19 07:02:58,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:02:58,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:02:58,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:02:58,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:02:58,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:02:58,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528685018] [2022-01-19 07:02:58,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528685018] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:02:58,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:02:58,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:02:58,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79978281] [2022-01-19 07:02:58,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:02:58,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:02:58,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:02:58,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:02:58,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:02:58,554 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:02:58,555 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 213 transitions, 744 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:58,555 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:02:58,555 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:02:58,555 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:02:58,996 INFO L129 PetriNetUnfolder]: 293/1475 cut-off events. [2022-01-19 07:02:58,996 INFO L130 PetriNetUnfolder]: For 6248/6270 co-relation queries the response was YES. [2022-01-19 07:02:59,004 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4659 conditions, 1475 events. 293/1475 cut-off events. For 6248/6270 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 11375 event pairs, 159 based on Foata normal form. 10/1401 useless extension candidates. Maximal degree in co-relation 4491. Up to 428 conditions per place. [2022-01-19 07:02:59,012 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 68 selfloop transitions, 13 changer transitions 36/287 dead transitions. [2022-01-19 07:02:59,012 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 287 transitions, 1685 flow [2022-01-19 07:02:59,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 07:02:59,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 07:02:59,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3612 transitions. [2022-01-19 07:02:59,017 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.819047619047619 [2022-01-19 07:02:59,018 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3612 transitions. [2022-01-19 07:02:59,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3612 transitions. [2022-01-19 07:02:59,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:02:59,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3612 transitions. [2022-01-19 07:02:59,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 172.0) internal successors, (3612), 21 states have internal predecessors, (3612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:59,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:59,036 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:59,036 INFO L186 Difference]: Start difference. First operand has 256 places, 213 transitions, 744 flow. Second operand 21 states and 3612 transitions. [2022-01-19 07:02:59,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 287 transitions, 1685 flow [2022-01-19 07:02:59,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 287 transitions, 1556 flow, removed 61 selfloop flow, removed 10 redundant places. [2022-01-19 07:02:59,058 INFO L242 Difference]: Finished difference. Result has 270 places, 226 transitions, 905 flow [2022-01-19 07:02:59,059 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=905, PETRI_PLACES=270, PETRI_TRANSITIONS=226} [2022-01-19 07:02:59,061 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 83 predicate places. [2022-01-19 07:02:59,061 INFO L470 AbstractCegarLoop]: Abstraction has has 270 places, 226 transitions, 905 flow [2022-01-19 07:02:59,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:59,061 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:02:59,062 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:02:59,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 07:02:59,062 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:02:59,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:02:59,062 INFO L85 PathProgramCache]: Analyzing trace with hash 395916068, now seen corresponding path program 2 times [2022-01-19 07:02:59,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:02:59,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113376578] [2022-01-19 07:02:59,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:02:59,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:02:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:02:59,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:02:59,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:02:59,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113376578] [2022-01-19 07:02:59,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113376578] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:02:59,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:02:59,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:02:59,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084116461] [2022-01-19 07:02:59,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:02:59,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:02:59,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:02:59,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:02:59,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:02:59,158 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:02:59,159 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 226 transitions, 905 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:59,159 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:02:59,159 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:02:59,159 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:02:59,479 INFO L129 PetriNetUnfolder]: 281/1413 cut-off events. [2022-01-19 07:02:59,479 INFO L130 PetriNetUnfolder]: For 8049/8079 co-relation queries the response was YES. [2022-01-19 07:02:59,488 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4996 conditions, 1413 events. 281/1413 cut-off events. For 8049/8079 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 10820 event pairs, 94 based on Foata normal form. 15/1364 useless extension candidates. Maximal degree in co-relation 4917. Up to 293 conditions per place. [2022-01-19 07:02:59,493 INFO L132 encePairwiseOnDemand]: 195/210 looper letters, 82 selfloop transitions, 25 changer transitions 50/327 dead transitions. [2022-01-19 07:02:59,493 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 327 transitions, 2063 flow [2022-01-19 07:02:59,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 07:02:59,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 07:02:59,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2794 transitions. [2022-01-19 07:02:59,496 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8315476190476191 [2022-01-19 07:02:59,496 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2794 transitions. [2022-01-19 07:02:59,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2794 transitions. [2022-01-19 07:02:59,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:02:59,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2794 transitions. [2022-01-19 07:02:59,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 174.625) internal successors, (2794), 16 states have internal predecessors, (2794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:59,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:59,504 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:59,504 INFO L186 Difference]: Start difference. First operand has 270 places, 226 transitions, 905 flow. Second operand 16 states and 2794 transitions. [2022-01-19 07:02:59,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 327 transitions, 2063 flow [2022-01-19 07:02:59,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 327 transitions, 1815 flow, removed 124 selfloop flow, removed 11 redundant places. [2022-01-19 07:02:59,525 INFO L242 Difference]: Finished difference. Result has 272 places, 236 transitions, 1049 flow [2022-01-19 07:02:59,525 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1049, PETRI_PLACES=272, PETRI_TRANSITIONS=236} [2022-01-19 07:02:59,526 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 85 predicate places. [2022-01-19 07:02:59,526 INFO L470 AbstractCegarLoop]: Abstraction has has 272 places, 236 transitions, 1049 flow [2022-01-19 07:02:59,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:59,526 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:02:59,526 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:02:59,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 07:02:59,526 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:02:59,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:02:59,527 INFO L85 PathProgramCache]: Analyzing trace with hash 2081702646, now seen corresponding path program 1 times [2022-01-19 07:02:59,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:02:59,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506007306] [2022-01-19 07:02:59,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:02:59,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:02:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:02:59,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:02:59,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:02:59,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506007306] [2022-01-19 07:02:59,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506007306] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:02:59,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:02:59,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 07:02:59,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866407961] [2022-01-19 07:02:59,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:02:59,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 07:02:59,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:02:59,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 07:02:59,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 07:02:59,545 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-01-19 07:02:59,545 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 236 transitions, 1049 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:59,545 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:02:59,545 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-01-19 07:02:59,545 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:02:59,683 INFO L129 PetriNetUnfolder]: 155/1472 cut-off events. [2022-01-19 07:02:59,683 INFO L130 PetriNetUnfolder]: For 5249/5285 co-relation queries the response was YES. [2022-01-19 07:02:59,692 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3840 conditions, 1472 events. 155/1472 cut-off events. For 5249/5285 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 12102 event pairs, 74 based on Foata normal form. 19/1399 useless extension candidates. Maximal degree in co-relation 3761. Up to 78 conditions per place. [2022-01-19 07:02:59,697 INFO L132 encePairwiseOnDemand]: 202/210 looper letters, 13 selfloop transitions, 5 changer transitions 0/242 dead transitions. [2022-01-19 07:02:59,697 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 242 transitions, 1100 flow [2022-01-19 07:02:59,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 07:02:59,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 07:02:59,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-01-19 07:02:59,698 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-01-19 07:02:59,698 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-01-19 07:02:59,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-01-19 07:02:59,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:02:59,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-01-19 07:02:59,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:59,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:59,700 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:59,701 INFO L186 Difference]: Start difference. First operand has 272 places, 236 transitions, 1049 flow. Second operand 3 states and 591 transitions. [2022-01-19 07:02:59,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 242 transitions, 1100 flow [2022-01-19 07:02:59,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 242 transitions, 972 flow, removed 64 selfloop flow, removed 9 redundant places. [2022-01-19 07:02:59,719 INFO L242 Difference]: Finished difference. Result has 256 places, 239 transitions, 959 flow [2022-01-19 07:02:59,719 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=921, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=959, PETRI_PLACES=256, PETRI_TRANSITIONS=239} [2022-01-19 07:02:59,721 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 69 predicate places. [2022-01-19 07:02:59,721 INFO L470 AbstractCegarLoop]: Abstraction has has 256 places, 239 transitions, 959 flow [2022-01-19 07:02:59,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:59,721 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:02:59,721 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:02:59,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 07:02:59,722 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:02:59,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:02:59,722 INFO L85 PathProgramCache]: Analyzing trace with hash -281237278, now seen corresponding path program 2 times [2022-01-19 07:02:59,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:02:59,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861142387] [2022-01-19 07:02:59,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:02:59,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:02:59,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:02:59,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:02:59,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:02:59,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861142387] [2022-01-19 07:02:59,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861142387] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:02:59,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:02:59,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 07:02:59,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538218906] [2022-01-19 07:02:59,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:02:59,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 07:02:59,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:02:59,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 07:02:59,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 07:02:59,753 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-01-19 07:02:59,754 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 239 transitions, 959 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:59,754 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:02:59,754 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-01-19 07:02:59,754 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:02:59,882 INFO L129 PetriNetUnfolder]: 90/1008 cut-off events. [2022-01-19 07:02:59,882 INFO L130 PetriNetUnfolder]: For 2439/2461 co-relation queries the response was YES. [2022-01-19 07:02:59,887 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2403 conditions, 1008 events. 90/1008 cut-off events. For 2439/2461 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7363 event pairs, 46 based on Foata normal form. 18/974 useless extension candidates. Maximal degree in co-relation 2113. Up to 52 conditions per place. [2022-01-19 07:02:59,889 INFO L132 encePairwiseOnDemand]: 204/210 looper letters, 17 selfloop transitions, 2 changer transitions 13/234 dead transitions. [2022-01-19 07:02:59,889 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 234 transitions, 950 flow [2022-01-19 07:02:59,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 07:02:59,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 07:02:59,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-01-19 07:02:59,890 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-01-19 07:02:59,890 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-01-19 07:02:59,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-01-19 07:02:59,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:02:59,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-01-19 07:02:59,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:59,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:59,892 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:59,892 INFO L186 Difference]: Start difference. First operand has 256 places, 239 transitions, 959 flow. Second operand 3 states and 591 transitions. [2022-01-19 07:02:59,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 234 transitions, 950 flow [2022-01-19 07:02:59,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 234 transitions, 922 flow, removed 7 selfloop flow, removed 6 redundant places. [2022-01-19 07:02:59,903 INFO L242 Difference]: Finished difference. Result has 252 places, 218 transitions, 804 flow [2022-01-19 07:02:59,903 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=804, PETRI_PLACES=252, PETRI_TRANSITIONS=218} [2022-01-19 07:02:59,904 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 65 predicate places. [2022-01-19 07:02:59,904 INFO L470 AbstractCegarLoop]: Abstraction has has 252 places, 218 transitions, 804 flow [2022-01-19 07:02:59,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:59,904 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:02:59,904 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:02:59,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 07:02:59,905 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:02:59,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:02:59,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1395240836, now seen corresponding path program 2 times [2022-01-19 07:02:59,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:02:59,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204870221] [2022-01-19 07:02:59,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:02:59,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:02:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:02:59,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:02:59,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:02:59,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204870221] [2022-01-19 07:02:59,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204870221] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:02:59,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:02:59,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:02:59,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296569828] [2022-01-19 07:02:59,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:02:59,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:02:59,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:02:59,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:02:59,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:02:59,994 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:02:59,995 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 218 transitions, 804 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:02:59,995 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:02:59,995 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:02:59,995 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:00,336 INFO L129 PetriNetUnfolder]: 155/1045 cut-off events. [2022-01-19 07:03:00,336 INFO L130 PetriNetUnfolder]: For 3335/3362 co-relation queries the response was YES. [2022-01-19 07:03:00,342 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2985 conditions, 1045 events. 155/1045 cut-off events. For 3335/3362 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 7490 event pairs, 69 based on Foata normal form. 10/1008 useless extension candidates. Maximal degree in co-relation 2264. Up to 246 conditions per place. [2022-01-19 07:03:00,346 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 81 selfloop transitions, 6 changer transitions 41/300 dead transitions. [2022-01-19 07:03:00,346 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 300 transitions, 1524 flow [2022-01-19 07:03:00,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 07:03:00,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 07:03:00,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4122 transitions. [2022-01-19 07:03:00,350 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8178571428571428 [2022-01-19 07:03:00,350 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4122 transitions. [2022-01-19 07:03:00,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4122 transitions. [2022-01-19 07:03:00,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:00,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4122 transitions. [2022-01-19 07:03:00,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 171.75) internal successors, (4122), 24 states have internal predecessors, (4122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:00,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:00,361 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:00,361 INFO L186 Difference]: Start difference. First operand has 252 places, 218 transitions, 804 flow. Second operand 24 states and 4122 transitions. [2022-01-19 07:03:00,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 300 transitions, 1524 flow [2022-01-19 07:03:00,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 300 transitions, 1478 flow, removed 22 selfloop flow, removed 6 redundant places. [2022-01-19 07:03:00,375 INFO L242 Difference]: Finished difference. Result has 284 places, 222 transitions, 898 flow [2022-01-19 07:03:00,375 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=898, PETRI_PLACES=284, PETRI_TRANSITIONS=222} [2022-01-19 07:03:00,375 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 97 predicate places. [2022-01-19 07:03:00,375 INFO L470 AbstractCegarLoop]: Abstraction has has 284 places, 222 transitions, 898 flow [2022-01-19 07:03:00,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:00,376 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:00,376 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:00,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 07:03:00,376 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:00,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:00,377 INFO L85 PathProgramCache]: Analyzing trace with hash 386763716, now seen corresponding path program 3 times [2022-01-19 07:03:00,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:00,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629654778] [2022-01-19 07:03:00,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:00,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:00,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:00,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:00,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629654778] [2022-01-19 07:03:00,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629654778] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:00,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:00,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:03:00,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026603192] [2022-01-19 07:03:00,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:00,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:03:00,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:00,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:03:00,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:03:00,465 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:03:00,466 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 222 transitions, 898 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:00,466 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:00,466 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:03:00,466 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:00,721 INFO L129 PetriNetUnfolder]: 160/1084 cut-off events. [2022-01-19 07:03:00,721 INFO L130 PetriNetUnfolder]: For 4946/4970 co-relation queries the response was YES. [2022-01-19 07:03:00,729 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3443 conditions, 1084 events. 160/1084 cut-off events. For 4946/4970 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7871 event pairs, 73 based on Foata normal form. 10/1039 useless extension candidates. Maximal degree in co-relation 3336. Up to 285 conditions per place. [2022-01-19 07:03:00,732 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 64 selfloop transitions, 16 changer transitions 25/277 dead transitions. [2022-01-19 07:03:00,732 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 277 transitions, 1685 flow [2022-01-19 07:03:00,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:03:00,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:03:00,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3091 transitions. [2022-01-19 07:03:00,735 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8177248677248677 [2022-01-19 07:03:00,735 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3091 transitions. [2022-01-19 07:03:00,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3091 transitions. [2022-01-19 07:03:00,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:00,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3091 transitions. [2022-01-19 07:03:00,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.72222222222223) internal successors, (3091), 18 states have internal predecessors, (3091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:00,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:00,742 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:00,742 INFO L186 Difference]: Start difference. First operand has 284 places, 222 transitions, 898 flow. Second operand 18 states and 3091 transitions. [2022-01-19 07:03:00,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 277 transitions, 1685 flow [2022-01-19 07:03:00,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 277 transitions, 1398 flow, removed 142 selfloop flow, removed 14 redundant places. [2022-01-19 07:03:00,759 INFO L242 Difference]: Finished difference. Result has 280 places, 236 transitions, 1023 flow [2022-01-19 07:03:00,760 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1023, PETRI_PLACES=280, PETRI_TRANSITIONS=236} [2022-01-19 07:03:00,760 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 93 predicate places. [2022-01-19 07:03:00,760 INFO L470 AbstractCegarLoop]: Abstraction has has 280 places, 236 transitions, 1023 flow [2022-01-19 07:03:00,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:00,761 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:00,761 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:00,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-19 07:03:00,761 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:00,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:00,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1471582416, now seen corresponding path program 4 times [2022-01-19 07:03:00,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:00,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722073546] [2022-01-19 07:03:00,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:00,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:00,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:00,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:00,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722073546] [2022-01-19 07:03:00,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722073546] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:00,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:00,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:03:00,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227029684] [2022-01-19 07:03:00,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:00,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:03:00,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:00,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:03:00,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:03:00,857 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:03:00,858 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 236 transitions, 1023 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:00,858 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:00,858 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:03:00,858 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:01,131 INFO L129 PetriNetUnfolder]: 166/1064 cut-off events. [2022-01-19 07:03:01,131 INFO L130 PetriNetUnfolder]: For 3669/3692 co-relation queries the response was YES. [2022-01-19 07:03:01,138 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3282 conditions, 1064 events. 166/1064 cut-off events. For 3669/3692 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 7626 event pairs, 73 based on Foata normal form. 9/1015 useless extension candidates. Maximal degree in co-relation 3177. Up to 276 conditions per place. [2022-01-19 07:03:01,141 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 66 selfloop transitions, 23 changer transitions 26/287 dead transitions. [2022-01-19 07:03:01,142 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 287 transitions, 1668 flow [2022-01-19 07:03:01,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 07:03:01,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 07:03:01,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2756 transitions. [2022-01-19 07:03:01,144 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8202380952380952 [2022-01-19 07:03:01,144 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2756 transitions. [2022-01-19 07:03:01,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2756 transitions. [2022-01-19 07:03:01,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:01,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2756 transitions. [2022-01-19 07:03:01,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 172.25) internal successors, (2756), 16 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:01,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:01,150 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:01,150 INFO L186 Difference]: Start difference. First operand has 280 places, 236 transitions, 1023 flow. Second operand 16 states and 2756 transitions. [2022-01-19 07:03:01,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 287 transitions, 1668 flow [2022-01-19 07:03:01,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 287 transitions, 1596 flow, removed 32 selfloop flow, removed 14 redundant places. [2022-01-19 07:03:01,166 INFO L242 Difference]: Finished difference. Result has 283 places, 246 transitions, 1163 flow [2022-01-19 07:03:01,166 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=975, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1163, PETRI_PLACES=283, PETRI_TRANSITIONS=246} [2022-01-19 07:03:01,167 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 96 predicate places. [2022-01-19 07:03:01,167 INFO L470 AbstractCegarLoop]: Abstraction has has 283 places, 246 transitions, 1163 flow [2022-01-19 07:03:01,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:01,167 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:01,167 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:01,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-19 07:03:01,167 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:01,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:01,168 INFO L85 PathProgramCache]: Analyzing trace with hash -2116593152, now seen corresponding path program 5 times [2022-01-19 07:03:01,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:01,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820467809] [2022-01-19 07:03:01,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:01,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:01,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:01,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:01,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820467809] [2022-01-19 07:03:01,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820467809] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:01,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:01,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:03:01,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502374226] [2022-01-19 07:03:01,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:01,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:03:01,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:01,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:03:01,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:03:01,270 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:03:01,270 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 246 transitions, 1163 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:01,270 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:01,270 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:03:01,271 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:01,557 INFO L129 PetriNetUnfolder]: 181/1158 cut-off events. [2022-01-19 07:03:01,558 INFO L130 PetriNetUnfolder]: For 3961/3984 co-relation queries the response was YES. [2022-01-19 07:03:01,565 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3648 conditions, 1158 events. 181/1158 cut-off events. For 3961/3984 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 8538 event pairs, 82 based on Foata normal form. 10/1111 useless extension candidates. Maximal degree in co-relation 3545. Up to 297 conditions per place. [2022-01-19 07:03:01,569 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 82 selfloop transitions, 23 changer transitions 29/306 dead transitions. [2022-01-19 07:03:01,569 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 306 transitions, 2081 flow [2022-01-19 07:03:01,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 07:03:01,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 07:03:01,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3431 transitions. [2022-01-19 07:03:01,571 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8169047619047619 [2022-01-19 07:03:01,571 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3431 transitions. [2022-01-19 07:03:01,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3431 transitions. [2022-01-19 07:03:01,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:01,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3431 transitions. [2022-01-19 07:03:01,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.55) internal successors, (3431), 20 states have internal predecessors, (3431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:01,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:01,579 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:01,579 INFO L186 Difference]: Start difference. First operand has 283 places, 246 transitions, 1163 flow. Second operand 20 states and 3431 transitions. [2022-01-19 07:03:01,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 306 transitions, 2081 flow [2022-01-19 07:03:01,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 306 transitions, 1961 flow, removed 37 selfloop flow, removed 8 redundant places. [2022-01-19 07:03:01,601 INFO L242 Difference]: Finished difference. Result has 304 places, 258 transitions, 1368 flow [2022-01-19 07:03:01,602 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1368, PETRI_PLACES=304, PETRI_TRANSITIONS=258} [2022-01-19 07:03:01,602 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 117 predicate places. [2022-01-19 07:03:01,603 INFO L470 AbstractCegarLoop]: Abstraction has has 304 places, 258 transitions, 1368 flow [2022-01-19 07:03:01,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:01,603 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:01,603 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:01,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-19 07:03:01,604 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:01,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:01,604 INFO L85 PathProgramCache]: Analyzing trace with hash -105746794, now seen corresponding path program 6 times [2022-01-19 07:03:01,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:01,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143223807] [2022-01-19 07:03:01,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:01,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:01,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:01,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:01,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:01,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143223807] [2022-01-19 07:03:01,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143223807] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:01,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:01,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:03:01,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536840134] [2022-01-19 07:03:01,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:01,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:03:01,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:01,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:03:01,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:03:01,697 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:03:01,698 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 258 transitions, 1368 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:01,698 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:01,698 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:03:01,698 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:02,061 INFO L129 PetriNetUnfolder]: 184/1172 cut-off events. [2022-01-19 07:03:02,061 INFO L130 PetriNetUnfolder]: For 4910/4938 co-relation queries the response was YES. [2022-01-19 07:03:02,072 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3935 conditions, 1172 events. 184/1172 cut-off events. For 4910/4938 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 8770 event pairs, 81 based on Foata normal form. 9/1124 useless extension candidates. Maximal degree in co-relation 3821. Up to 285 conditions per place. [2022-01-19 07:03:02,079 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 90 selfloop transitions, 22 changer transitions 33/317 dead transitions. [2022-01-19 07:03:02,079 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 317 transitions, 2379 flow [2022-01-19 07:03:02,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 07:03:02,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 07:03:02,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3436 transitions. [2022-01-19 07:03:02,082 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8180952380952381 [2022-01-19 07:03:02,083 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3436 transitions. [2022-01-19 07:03:02,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3436 transitions. [2022-01-19 07:03:02,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:02,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3436 transitions. [2022-01-19 07:03:02,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.8) internal successors, (3436), 20 states have internal predecessors, (3436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:02,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:02,094 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:02,094 INFO L186 Difference]: Start difference. First operand has 304 places, 258 transitions, 1368 flow. Second operand 20 states and 3436 transitions. [2022-01-19 07:03:02,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 317 transitions, 2379 flow [2022-01-19 07:03:02,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 317 transitions, 2267 flow, removed 48 selfloop flow, removed 9 redundant places. [2022-01-19 07:03:02,117 INFO L242 Difference]: Finished difference. Result has 319 places, 269 transitions, 1602 flow [2022-01-19 07:03:02,117 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1318, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1602, PETRI_PLACES=319, PETRI_TRANSITIONS=269} [2022-01-19 07:03:02,118 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 132 predicate places. [2022-01-19 07:03:02,118 INFO L470 AbstractCegarLoop]: Abstraction has has 319 places, 269 transitions, 1602 flow [2022-01-19 07:03:02,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:02,119 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:02,119 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:02,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-19 07:03:02,119 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:02,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:02,119 INFO L85 PathProgramCache]: Analyzing trace with hash 889201550, now seen corresponding path program 7 times [2022-01-19 07:03:02,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:02,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203103220] [2022-01-19 07:03:02,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:02,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:02,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:02,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:02,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203103220] [2022-01-19 07:03:02,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203103220] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:02,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:02,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:03:02,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724335289] [2022-01-19 07:03:02,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:02,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:03:02,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:02,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:03:02,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:03:02,225 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:03:02,226 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 269 transitions, 1602 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:02,226 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:02,226 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:03:02,226 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:02,672 INFO L129 PetriNetUnfolder]: 185/1224 cut-off events. [2022-01-19 07:03:02,672 INFO L130 PetriNetUnfolder]: For 5689/5720 co-relation queries the response was YES. [2022-01-19 07:03:02,685 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4158 conditions, 1224 events. 185/1224 cut-off events. For 5689/5720 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 9376 event pairs, 80 based on Foata normal form. 14/1182 useless extension candidates. Maximal degree in co-relation 4035. Up to 306 conditions per place. [2022-01-19 07:03:02,690 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 86 selfloop transitions, 28 changer transitions 35/321 dead transitions. [2022-01-19 07:03:02,690 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 321 transitions, 2491 flow [2022-01-19 07:03:02,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 07:03:02,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 07:03:02,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3767 transitions. [2022-01-19 07:03:02,694 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8153679653679654 [2022-01-19 07:03:02,694 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3767 transitions. [2022-01-19 07:03:02,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3767 transitions. [2022-01-19 07:03:02,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:02,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3767 transitions. [2022-01-19 07:03:02,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 171.22727272727272) internal successors, (3767), 22 states have internal predecessors, (3767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:02,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:02,754 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:02,754 INFO L186 Difference]: Start difference. First operand has 319 places, 269 transitions, 1602 flow. Second operand 22 states and 3767 transitions. [2022-01-19 07:03:02,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 321 transitions, 2491 flow [2022-01-19 07:03:02,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 321 transitions, 2353 flow, removed 60 selfloop flow, removed 12 redundant places. [2022-01-19 07:03:02,788 INFO L242 Difference]: Finished difference. Result has 331 places, 273 transitions, 1677 flow [2022-01-19 07:03:02,788 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1505, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1677, PETRI_PLACES=331, PETRI_TRANSITIONS=273} [2022-01-19 07:03:02,789 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 144 predicate places. [2022-01-19 07:03:02,789 INFO L470 AbstractCegarLoop]: Abstraction has has 331 places, 273 transitions, 1677 flow [2022-01-19 07:03:02,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:02,789 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:02,790 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:02,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-19 07:03:02,790 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:02,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:02,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1277585082, now seen corresponding path program 8 times [2022-01-19 07:03:02,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:02,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111219325] [2022-01-19 07:03:02,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:02,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:02,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:02,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:02,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:02,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111219325] [2022-01-19 07:03:02,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111219325] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:02,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:02,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:03:02,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745581359] [2022-01-19 07:03:02,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:02,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:03:02,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:02,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:03:02,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:03:02,904 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:03:02,905 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 273 transitions, 1677 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:02,906 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:02,906 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:03:02,906 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:03,339 INFO L129 PetriNetUnfolder]: 180/1222 cut-off events. [2022-01-19 07:03:03,339 INFO L130 PetriNetUnfolder]: For 5544/5575 co-relation queries the response was YES. [2022-01-19 07:03:03,349 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4119 conditions, 1222 events. 180/1222 cut-off events. For 5544/5575 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 9402 event pairs, 79 based on Foata normal form. 12/1181 useless extension candidates. Maximal degree in co-relation 3992. Up to 298 conditions per place. [2022-01-19 07:03:03,352 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 92 selfloop transitions, 25 changer transitions 36/325 dead transitions. [2022-01-19 07:03:03,353 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 325 transitions, 2655 flow [2022-01-19 07:03:03,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 07:03:03,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 07:03:03,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3605 transitions. [2022-01-19 07:03:03,355 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8174603174603174 [2022-01-19 07:03:03,355 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3605 transitions. [2022-01-19 07:03:03,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3605 transitions. [2022-01-19 07:03:03,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:03,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3605 transitions. [2022-01-19 07:03:03,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 171.66666666666666) internal successors, (3605), 21 states have internal predecessors, (3605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:03,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:03,363 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:03,363 INFO L186 Difference]: Start difference. First operand has 331 places, 273 transitions, 1677 flow. Second operand 21 states and 3605 transitions. [2022-01-19 07:03:03,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 325 transitions, 2655 flow [2022-01-19 07:03:03,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 325 transitions, 2495 flow, removed 62 selfloop flow, removed 14 redundant places. [2022-01-19 07:03:03,392 INFO L242 Difference]: Finished difference. Result has 339 places, 278 transitions, 1799 flow [2022-01-19 07:03:03,393 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1597, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1799, PETRI_PLACES=339, PETRI_TRANSITIONS=278} [2022-01-19 07:03:03,393 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 152 predicate places. [2022-01-19 07:03:03,393 INFO L470 AbstractCegarLoop]: Abstraction has has 339 places, 278 transitions, 1799 flow [2022-01-19 07:03:03,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:03,394 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:03,394 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:03,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-19 07:03:03,394 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:03,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:03,394 INFO L85 PathProgramCache]: Analyzing trace with hash 588377888, now seen corresponding path program 9 times [2022-01-19 07:03:03,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:03,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65589795] [2022-01-19 07:03:03,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:03,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:03,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:03,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:03,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65589795] [2022-01-19 07:03:03,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65589795] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:03,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:03,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:03:03,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679811369] [2022-01-19 07:03:03,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:03,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:03:03,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:03,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:03:03,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:03:03,474 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:03:03,475 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 278 transitions, 1799 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:03,475 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:03,475 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:03:03,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:03,800 INFO L129 PetriNetUnfolder]: 162/1131 cut-off events. [2022-01-19 07:03:03,800 INFO L130 PetriNetUnfolder]: For 4992/5018 co-relation queries the response was YES. [2022-01-19 07:03:03,810 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3730 conditions, 1131 events. 162/1131 cut-off events. For 4992/5018 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 8442 event pairs, 76 based on Foata normal form. 13/1089 useless extension candidates. Maximal degree in co-relation 3599. Up to 296 conditions per place. [2022-01-19 07:03:03,813 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 81 selfloop transitions, 18 changer transitions 31/302 dead transitions. [2022-01-19 07:03:03,814 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 302 transitions, 2300 flow [2022-01-19 07:03:03,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 07:03:03,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 07:03:03,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2745 transitions. [2022-01-19 07:03:03,816 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8169642857142857 [2022-01-19 07:03:03,816 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2745 transitions. [2022-01-19 07:03:03,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2745 transitions. [2022-01-19 07:03:03,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:03,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2745 transitions. [2022-01-19 07:03:03,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 171.5625) internal successors, (2745), 16 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:03,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:03,822 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:03,822 INFO L186 Difference]: Start difference. First operand has 339 places, 278 transitions, 1799 flow. Second operand 16 states and 2745 transitions. [2022-01-19 07:03:03,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 302 transitions, 2300 flow [2022-01-19 07:03:03,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 302 transitions, 2146 flow, removed 52 selfloop flow, removed 18 redundant places. [2022-01-19 07:03:03,850 INFO L242 Difference]: Finished difference. Result has 328 places, 262 transitions, 1486 flow [2022-01-19 07:03:03,851 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1671, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1486, PETRI_PLACES=328, PETRI_TRANSITIONS=262} [2022-01-19 07:03:03,851 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 141 predicate places. [2022-01-19 07:03:03,851 INFO L470 AbstractCegarLoop]: Abstraction has has 328 places, 262 transitions, 1486 flow [2022-01-19 07:03:03,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:03,852 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:03,852 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:03,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-19 07:03:03,852 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:03,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:03,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1044741156, now seen corresponding path program 10 times [2022-01-19 07:03:03,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:03,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765505665] [2022-01-19 07:03:03,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:03,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:03,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:03,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:03,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765505665] [2022-01-19 07:03:03,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765505665] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:03,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:03,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:03:03,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120044282] [2022-01-19 07:03:03,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:03,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:03:03,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:03,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:03:03,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:03:03,932 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:03:03,933 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 262 transitions, 1486 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:03,933 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:03,934 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:03:03,934 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:04,233 INFO L129 PetriNetUnfolder]: 166/1162 cut-off events. [2022-01-19 07:03:04,233 INFO L130 PetriNetUnfolder]: For 4414/4438 co-relation queries the response was YES. [2022-01-19 07:03:04,239 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3747 conditions, 1162 events. 166/1162 cut-off events. For 4414/4438 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 8740 event pairs, 80 based on Foata normal form. 9/1117 useless extension candidates. Maximal degree in co-relation 3672. Up to 298 conditions per place. [2022-01-19 07:03:04,242 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 81 selfloop transitions, 25 changer transitions 28/306 dead transitions. [2022-01-19 07:03:04,242 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 306 transitions, 2268 flow [2022-01-19 07:03:04,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 07:03:04,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 07:03:04,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2925 transitions. [2022-01-19 07:03:04,244 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.819327731092437 [2022-01-19 07:03:04,244 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2925 transitions. [2022-01-19 07:03:04,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2925 transitions. [2022-01-19 07:03:04,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:04,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2925 transitions. [2022-01-19 07:03:04,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 172.05882352941177) internal successors, (2925), 17 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:04,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:04,250 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:04,250 INFO L186 Difference]: Start difference. First operand has 328 places, 262 transitions, 1486 flow. Second operand 17 states and 2925 transitions. [2022-01-19 07:03:04,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 306 transitions, 2268 flow [2022-01-19 07:03:04,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 306 transitions, 2147 flow, removed 17 selfloop flow, removed 12 redundant places. [2022-01-19 07:03:04,270 INFO L242 Difference]: Finished difference. Result has 321 places, 270 transitions, 1610 flow [2022-01-19 07:03:04,270 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1406, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1610, PETRI_PLACES=321, PETRI_TRANSITIONS=270} [2022-01-19 07:03:04,271 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 134 predicate places. [2022-01-19 07:03:04,271 INFO L470 AbstractCegarLoop]: Abstraction has has 321 places, 270 transitions, 1610 flow [2022-01-19 07:03:04,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:04,271 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:04,271 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:04,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-19 07:03:04,272 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:04,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:04,272 INFO L85 PathProgramCache]: Analyzing trace with hash 811606530, now seen corresponding path program 11 times [2022-01-19 07:03:04,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:04,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812788878] [2022-01-19 07:03:04,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:04,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:04,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:04,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:04,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812788878] [2022-01-19 07:03:04,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812788878] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:04,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:04,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:03:04,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358006052] [2022-01-19 07:03:04,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:04,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:03:04,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:04,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:03:04,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:03:04,344 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:03:04,345 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 270 transitions, 1610 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:04,345 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:04,345 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:03:04,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:04,621 INFO L129 PetriNetUnfolder]: 165/1151 cut-off events. [2022-01-19 07:03:04,621 INFO L130 PetriNetUnfolder]: For 4451/4480 co-relation queries the response was YES. [2022-01-19 07:03:04,630 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3757 conditions, 1151 events. 165/1151 cut-off events. For 4451/4480 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 8647 event pairs, 80 based on Foata normal form. 11/1106 useless extension candidates. Maximal degree in co-relation 3680. Up to 300 conditions per place. [2022-01-19 07:03:04,632 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 82 selfloop transitions, 27 changer transitions 28/309 dead transitions. [2022-01-19 07:03:04,632 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 309 transitions, 2388 flow [2022-01-19 07:03:04,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 07:03:04,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 07:03:04,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2923 transitions. [2022-01-19 07:03:04,634 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8187675070028011 [2022-01-19 07:03:04,635 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2923 transitions. [2022-01-19 07:03:04,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2923 transitions. [2022-01-19 07:03:04,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:04,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2923 transitions. [2022-01-19 07:03:04,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.94117647058823) internal successors, (2923), 17 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:04,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:04,640 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:04,640 INFO L186 Difference]: Start difference. First operand has 321 places, 270 transitions, 1610 flow. Second operand 17 states and 2923 transitions. [2022-01-19 07:03:04,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 309 transitions, 2388 flow [2022-01-19 07:03:04,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 309 transitions, 2286 flow, removed 25 selfloop flow, removed 9 redundant places. [2022-01-19 07:03:04,663 INFO L242 Difference]: Finished difference. Result has 329 places, 277 transitions, 1767 flow [2022-01-19 07:03:04,664 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1544, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1767, PETRI_PLACES=329, PETRI_TRANSITIONS=277} [2022-01-19 07:03:04,664 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 142 predicate places. [2022-01-19 07:03:04,664 INFO L470 AbstractCegarLoop]: Abstraction has has 329 places, 277 transitions, 1767 flow [2022-01-19 07:03:04,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:04,665 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:04,665 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:04,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-19 07:03:04,665 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:04,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:04,665 INFO L85 PathProgramCache]: Analyzing trace with hash -247791936, now seen corresponding path program 12 times [2022-01-19 07:03:04,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:04,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874697356] [2022-01-19 07:03:04,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:04,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:04,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:04,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:04,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874697356] [2022-01-19 07:03:04,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874697356] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:04,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:04,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:03:04,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831932430] [2022-01-19 07:03:04,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:04,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:03:04,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:04,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:03:04,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:03:04,750 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:03:04,751 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 277 transitions, 1767 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:04,751 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:04,751 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:03:04,751 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:05,027 INFO L129 PetriNetUnfolder]: 156/1130 cut-off events. [2022-01-19 07:03:05,027 INFO L130 PetriNetUnfolder]: For 4076/4105 co-relation queries the response was YES. [2022-01-19 07:03:05,038 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3585 conditions, 1130 events. 156/1130 cut-off events. For 4076/4105 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8444 event pairs, 78 based on Foata normal form. 11/1088 useless extension candidates. Maximal degree in co-relation 3505. Up to 292 conditions per place. [2022-01-19 07:03:05,041 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 79 selfloop transitions, 16 changer transitions 34/301 dead transitions. [2022-01-19 07:03:05,041 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 301 transitions, 2223 flow [2022-01-19 07:03:05,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:03:05,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:03:05,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3088 transitions. [2022-01-19 07:03:05,043 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.816931216931217 [2022-01-19 07:03:05,043 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3088 transitions. [2022-01-19 07:03:05,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3088 transitions. [2022-01-19 07:03:05,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:05,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3088 transitions. [2022-01-19 07:03:05,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.55555555555554) internal successors, (3088), 18 states have internal predecessors, (3088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:05,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:05,049 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:05,049 INFO L186 Difference]: Start difference. First operand has 329 places, 277 transitions, 1767 flow. Second operand 18 states and 3088 transitions. [2022-01-19 07:03:05,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 301 transitions, 2223 flow [2022-01-19 07:03:05,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 301 transitions, 2131 flow, removed 29 selfloop flow, removed 8 redundant places. [2022-01-19 07:03:05,073 INFO L242 Difference]: Finished difference. Result has 335 places, 263 transitions, 1501 flow [2022-01-19 07:03:05,073 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1683, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1501, PETRI_PLACES=335, PETRI_TRANSITIONS=263} [2022-01-19 07:03:05,074 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 148 predicate places. [2022-01-19 07:03:05,074 INFO L470 AbstractCegarLoop]: Abstraction has has 335 places, 263 transitions, 1501 flow [2022-01-19 07:03:05,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:05,074 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:05,074 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:05,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-19 07:03:05,074 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:05,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:05,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1057827110, now seen corresponding path program 13 times [2022-01-19 07:03:05,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:05,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009478389] [2022-01-19 07:03:05,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:05,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:05,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:05,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:05,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009478389] [2022-01-19 07:03:05,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009478389] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:05,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:05,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:03:05,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645828710] [2022-01-19 07:03:05,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:05,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:03:05,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:05,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:03:05,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:03:05,172 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:03:05,173 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 263 transitions, 1501 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:05,173 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:05,173 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:03:05,173 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:05,478 INFO L129 PetriNetUnfolder]: 143/1038 cut-off events. [2022-01-19 07:03:05,478 INFO L130 PetriNetUnfolder]: For 3529/3553 co-relation queries the response was YES. [2022-01-19 07:03:05,485 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3209 conditions, 1038 events. 143/1038 cut-off events. For 3529/3553 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7469 event pairs, 75 based on Foata normal form. 9/996 useless extension candidates. Maximal degree in co-relation 3130. Up to 281 conditions per place. [2022-01-19 07:03:05,488 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 69 selfloop transitions, 5 changer transitions 33/279 dead transitions. [2022-01-19 07:03:05,488 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 279 transitions, 1835 flow [2022-01-19 07:03:05,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:03:05,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:03:05,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3077 transitions. [2022-01-19 07:03:05,491 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.814021164021164 [2022-01-19 07:03:05,491 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3077 transitions. [2022-01-19 07:03:05,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3077 transitions. [2022-01-19 07:03:05,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:05,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3077 transitions. [2022-01-19 07:03:05,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 170.94444444444446) internal successors, (3077), 18 states have internal predecessors, (3077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:05,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:05,498 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:05,498 INFO L186 Difference]: Start difference. First operand has 335 places, 263 transitions, 1501 flow. Second operand 18 states and 3077 transitions. [2022-01-19 07:03:05,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 279 transitions, 1835 flow [2022-01-19 07:03:05,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 279 transitions, 1735 flow, removed 19 selfloop flow, removed 17 redundant places. [2022-01-19 07:03:05,522 INFO L242 Difference]: Finished difference. Result has 323 places, 243 transitions, 1166 flow [2022-01-19 07:03:05,522 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1413, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1166, PETRI_PLACES=323, PETRI_TRANSITIONS=243} [2022-01-19 07:03:05,523 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 136 predicate places. [2022-01-19 07:03:05,523 INFO L470 AbstractCegarLoop]: Abstraction has has 323 places, 243 transitions, 1166 flow [2022-01-19 07:03:05,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:05,523 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:05,523 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:05,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-19 07:03:05,523 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:05,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:05,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1617177460, now seen corresponding path program 14 times [2022-01-19 07:03:05,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:05,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837395365] [2022-01-19 07:03:05,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:05,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:05,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:05,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:05,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:05,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837395365] [2022-01-19 07:03:05,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837395365] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:05,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:05,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:03:05,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322165737] [2022-01-19 07:03:05,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:05,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:03:05,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:05,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:03:05,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:03:05,604 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:03:05,605 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 243 transitions, 1166 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:05,605 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:05,605 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:03:05,605 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:05,935 INFO L129 PetriNetUnfolder]: 146/1060 cut-off events. [2022-01-19 07:03:05,935 INFO L130 PetriNetUnfolder]: For 3335/3357 co-relation queries the response was YES. [2022-01-19 07:03:05,942 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3208 conditions, 1060 events. 146/1060 cut-off events. For 3335/3357 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 7772 event pairs, 71 based on Foata normal form. 9/1017 useless extension candidates. Maximal degree in co-relation 3134. Up to 259 conditions per place. [2022-01-19 07:03:05,945 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 63 selfloop transitions, 23 changer transitions 34/292 dead transitions. [2022-01-19 07:03:05,946 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 292 transitions, 1942 flow [2022-01-19 07:03:05,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 07:03:05,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 07:03:05,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3765 transitions. [2022-01-19 07:03:05,949 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.814935064935065 [2022-01-19 07:03:05,949 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3765 transitions. [2022-01-19 07:03:05,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3765 transitions. [2022-01-19 07:03:05,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:05,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3765 transitions. [2022-01-19 07:03:05,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 171.13636363636363) internal successors, (3765), 22 states have internal predecessors, (3765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:05,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:05,956 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:05,956 INFO L186 Difference]: Start difference. First operand has 323 places, 243 transitions, 1166 flow. Second operand 22 states and 3765 transitions. [2022-01-19 07:03:05,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 292 transitions, 1942 flow [2022-01-19 07:03:05,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 292 transitions, 1796 flow, removed 34 selfloop flow, removed 21 redundant places. [2022-01-19 07:03:05,974 INFO L242 Difference]: Finished difference. Result has 309 places, 248 transitions, 1240 flow [2022-01-19 07:03:05,974 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1092, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1240, PETRI_PLACES=309, PETRI_TRANSITIONS=248} [2022-01-19 07:03:05,975 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 122 predicate places. [2022-01-19 07:03:05,975 INFO L470 AbstractCegarLoop]: Abstraction has has 309 places, 248 transitions, 1240 flow [2022-01-19 07:03:05,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:05,975 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:05,975 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:05,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-19 07:03:05,976 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:05,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:05,976 INFO L85 PathProgramCache]: Analyzing trace with hash 428836932, now seen corresponding path program 15 times [2022-01-19 07:03:05,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:05,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523740634] [2022-01-19 07:03:05,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:05,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:06,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:06,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:06,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523740634] [2022-01-19 07:03:06,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523740634] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:06,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:06,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:03:06,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584201591] [2022-01-19 07:03:06,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:06,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:03:06,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:06,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:03:06,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:03:06,057 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:03:06,058 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 248 transitions, 1240 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:06,058 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:06,058 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:03:06,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:06,323 INFO L129 PetriNetUnfolder]: 148/1086 cut-off events. [2022-01-19 07:03:06,324 INFO L130 PetriNetUnfolder]: For 3621/3643 co-relation queries the response was YES. [2022-01-19 07:03:06,330 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3325 conditions, 1086 events. 148/1086 cut-off events. For 3621/3643 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8049 event pairs, 71 based on Foata normal form. 11/1047 useless extension candidates. Maximal degree in co-relation 3254. Up to 265 conditions per place. [2022-01-19 07:03:06,333 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 64 selfloop transitions, 27 changer transitions 27/290 dead transitions. [2022-01-19 07:03:06,333 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 290 transitions, 1954 flow [2022-01-19 07:03:06,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 07:03:06,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 07:03:06,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2920 transitions. [2022-01-19 07:03:06,335 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8179271708683473 [2022-01-19 07:03:06,335 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2920 transitions. [2022-01-19 07:03:06,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2920 transitions. [2022-01-19 07:03:06,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:06,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2920 transitions. [2022-01-19 07:03:06,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.76470588235293) internal successors, (2920), 17 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:06,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:06,341 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:06,341 INFO L186 Difference]: Start difference. First operand has 309 places, 248 transitions, 1240 flow. Second operand 17 states and 2920 transitions. [2022-01-19 07:03:06,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 290 transitions, 1954 flow [2022-01-19 07:03:06,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 290 transitions, 1866 flow, removed 31 selfloop flow, removed 13 redundant places. [2022-01-19 07:03:06,360 INFO L242 Difference]: Finished difference. Result has 308 places, 256 transitions, 1409 flow [2022-01-19 07:03:06,360 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1191, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1409, PETRI_PLACES=308, PETRI_TRANSITIONS=256} [2022-01-19 07:03:06,361 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 121 predicate places. [2022-01-19 07:03:06,361 INFO L470 AbstractCegarLoop]: Abstraction has has 308 places, 256 transitions, 1409 flow [2022-01-19 07:03:06,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:06,361 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:06,361 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:06,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-19 07:03:06,362 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:06,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:06,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1915196226, now seen corresponding path program 16 times [2022-01-19 07:03:06,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:06,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426240932] [2022-01-19 07:03:06,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:06,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:06,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:06,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:06,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426240932] [2022-01-19 07:03:06,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426240932] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:06,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:06,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:03:06,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762009241] [2022-01-19 07:03:06,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:06,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:03:06,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:06,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:03:06,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:03:06,430 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:03:06,431 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 256 transitions, 1409 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:06,431 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:06,431 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:03:06,431 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:06,687 INFO L129 PetriNetUnfolder]: 138/1037 cut-off events. [2022-01-19 07:03:06,687 INFO L130 PetriNetUnfolder]: For 3304/3326 co-relation queries the response was YES. [2022-01-19 07:03:06,694 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3131 conditions, 1037 events. 138/1037 cut-off events. For 3304/3326 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 7508 event pairs, 71 based on Foata normal form. 9/995 useless extension candidates. Maximal degree in co-relation 3061. Up to 260 conditions per place. [2022-01-19 07:03:06,696 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 61 selfloop transitions, 14 changer transitions 33/280 dead transitions. [2022-01-19 07:03:06,696 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 280 transitions, 1849 flow [2022-01-19 07:03:06,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:03:06,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:03:06,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3083 transitions. [2022-01-19 07:03:06,698 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8156084656084656 [2022-01-19 07:03:06,698 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3083 transitions. [2022-01-19 07:03:06,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3083 transitions. [2022-01-19 07:03:06,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:06,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3083 transitions. [2022-01-19 07:03:06,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.27777777777777) internal successors, (3083), 18 states have internal predecessors, (3083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:06,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:06,703 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:06,703 INFO L186 Difference]: Start difference. First operand has 308 places, 256 transitions, 1409 flow. Second operand 18 states and 3083 transitions. [2022-01-19 07:03:06,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 280 transitions, 1849 flow [2022-01-19 07:03:06,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 280 transitions, 1745 flow, removed 30 selfloop flow, removed 9 redundant places. [2022-01-19 07:03:06,719 INFO L242 Difference]: Finished difference. Result has 315 places, 241 transitions, 1164 flow [2022-01-19 07:03:06,720 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1324, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1164, PETRI_PLACES=315, PETRI_TRANSITIONS=241} [2022-01-19 07:03:06,720 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 128 predicate places. [2022-01-19 07:03:06,720 INFO L470 AbstractCegarLoop]: Abstraction has has 315 places, 241 transitions, 1164 flow [2022-01-19 07:03:06,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:06,721 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:06,721 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:06,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-19 07:03:06,721 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:06,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:06,721 INFO L85 PathProgramCache]: Analyzing trace with hash 2072010770, now seen corresponding path program 17 times [2022-01-19 07:03:06,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:06,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838767861] [2022-01-19 07:03:06,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:06,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:06,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:06,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:06,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838767861] [2022-01-19 07:03:06,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838767861] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:06,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:06,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:03:06,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136070734] [2022-01-19 07:03:06,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:06,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:03:06,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:06,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:03:06,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:03:06,801 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:03:06,802 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 241 transitions, 1164 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:06,802 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:06,802 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:03:06,802 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:07,157 INFO L129 PetriNetUnfolder]: 138/1033 cut-off events. [2022-01-19 07:03:07,157 INFO L130 PetriNetUnfolder]: For 3545/3565 co-relation queries the response was YES. [2022-01-19 07:03:07,162 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3112 conditions, 1033 events. 138/1033 cut-off events. For 3545/3565 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 7476 event pairs, 70 based on Foata normal form. 9/992 useless extension candidates. Maximal degree in co-relation 3041. Up to 251 conditions per place. [2022-01-19 07:03:07,164 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 57 selfloop transitions, 20 changer transitions 34/283 dead transitions. [2022-01-19 07:03:07,164 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 283 transitions, 1927 flow [2022-01-19 07:03:07,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 07:03:07,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 07:03:07,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3594 transitions. [2022-01-19 07:03:07,166 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8149659863945579 [2022-01-19 07:03:07,166 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3594 transitions. [2022-01-19 07:03:07,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3594 transitions. [2022-01-19 07:03:07,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:07,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3594 transitions. [2022-01-19 07:03:07,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 171.14285714285714) internal successors, (3594), 21 states have internal predecessors, (3594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:07,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:07,175 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:07,175 INFO L186 Difference]: Start difference. First operand has 315 places, 241 transitions, 1164 flow. Second operand 21 states and 3594 transitions. [2022-01-19 07:03:07,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 283 transitions, 1927 flow [2022-01-19 07:03:07,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 283 transitions, 1749 flow, removed 49 selfloop flow, removed 18 redundant places. [2022-01-19 07:03:07,189 INFO L242 Difference]: Finished difference. Result has 307 places, 244 transitions, 1229 flow [2022-01-19 07:03:07,190 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1229, PETRI_PLACES=307, PETRI_TRANSITIONS=244} [2022-01-19 07:03:07,191 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 120 predicate places. [2022-01-19 07:03:07,191 INFO L470 AbstractCegarLoop]: Abstraction has has 307 places, 244 transitions, 1229 flow [2022-01-19 07:03:07,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:07,191 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:07,191 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:07,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-19 07:03:07,191 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:07,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:07,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1943238090, now seen corresponding path program 18 times [2022-01-19 07:03:07,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:07,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304985467] [2022-01-19 07:03:07,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:07,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:07,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:07,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:07,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:07,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304985467] [2022-01-19 07:03:07,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304985467] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:07,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:07,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:03:07,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476488979] [2022-01-19 07:03:07,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:07,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:03:07,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:07,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:03:07,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:03:07,280 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:03:07,281 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 244 transitions, 1229 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:07,281 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:07,281 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:03:07,281 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:07,520 INFO L129 PetriNetUnfolder]: 133/999 cut-off events. [2022-01-19 07:03:07,521 INFO L130 PetriNetUnfolder]: For 3165/3185 co-relation queries the response was YES. [2022-01-19 07:03:07,526 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2984 conditions, 999 events. 133/999 cut-off events. For 3165/3185 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7102 event pairs, 71 based on Foata normal form. 9/957 useless extension candidates. Maximal degree in co-relation 2913. Up to 255 conditions per place. [2022-01-19 07:03:07,529 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 53 selfloop transitions, 21 changer transitions 30/276 dead transitions. [2022-01-19 07:03:07,529 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 276 transitions, 1809 flow [2022-01-19 07:03:07,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:03:07,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:03:07,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3087 transitions. [2022-01-19 07:03:07,549 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2022-01-19 07:03:07,549 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3087 transitions. [2022-01-19 07:03:07,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3087 transitions. [2022-01-19 07:03:07,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:07,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3087 transitions. [2022-01-19 07:03:07,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.5) internal successors, (3087), 18 states have internal predecessors, (3087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:07,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:07,554 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:07,554 INFO L186 Difference]: Start difference. First operand has 307 places, 244 transitions, 1229 flow. Second operand 18 states and 3087 transitions. [2022-01-19 07:03:07,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 276 transitions, 1809 flow [2022-01-19 07:03:07,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 276 transitions, 1692 flow, removed 44 selfloop flow, removed 14 redundant places. [2022-01-19 07:03:07,569 INFO L242 Difference]: Finished difference. Result has 302 places, 244 transitions, 1239 flow [2022-01-19 07:03:07,569 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1166, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1239, PETRI_PLACES=302, PETRI_TRANSITIONS=244} [2022-01-19 07:03:07,569 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 115 predicate places. [2022-01-19 07:03:07,569 INFO L470 AbstractCegarLoop]: Abstraction has has 302 places, 244 transitions, 1239 flow [2022-01-19 07:03:07,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:07,570 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:07,570 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:07,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-19 07:03:07,570 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:07,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:07,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1724336444, now seen corresponding path program 19 times [2022-01-19 07:03:07,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:07,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157737183] [2022-01-19 07:03:07,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:07,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:07,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:07,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:07,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:07,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157737183] [2022-01-19 07:03:07,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157737183] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:07,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:07,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:03:07,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787233901] [2022-01-19 07:03:07,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:07,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:03:07,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:07,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:03:07,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:03:07,664 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:03:07,665 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 244 transitions, 1239 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:07,665 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:07,665 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:03:07,665 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:07,908 INFO L129 PetriNetUnfolder]: 129/984 cut-off events. [2022-01-19 07:03:07,908 INFO L130 PetriNetUnfolder]: For 2820/2840 co-relation queries the response was YES. [2022-01-19 07:03:07,913 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2834 conditions, 984 events. 129/984 cut-off events. For 2820/2840 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 6951 event pairs, 71 based on Foata normal form. 9/943 useless extension candidates. Maximal degree in co-relation 2769. Up to 254 conditions per place. [2022-01-19 07:03:07,915 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 51 selfloop transitions, 13 changer transitions 32/268 dead transitions. [2022-01-19 07:03:07,916 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 268 transitions, 1607 flow [2022-01-19 07:03:07,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:03:07,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:03:07,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3084 transitions. [2022-01-19 07:03:07,917 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8158730158730159 [2022-01-19 07:03:07,918 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3084 transitions. [2022-01-19 07:03:07,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3084 transitions. [2022-01-19 07:03:07,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:07,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3084 transitions. [2022-01-19 07:03:07,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.33333333333334) internal successors, (3084), 18 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:07,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:07,922 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:07,922 INFO L186 Difference]: Start difference. First operand has 302 places, 244 transitions, 1239 flow. Second operand 18 states and 3084 transitions. [2022-01-19 07:03:07,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 268 transitions, 1607 flow [2022-01-19 07:03:07,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 268 transitions, 1479 flow, removed 26 selfloop flow, removed 15 redundant places. [2022-01-19 07:03:07,937 INFO L242 Difference]: Finished difference. Result has 303 places, 235 transitions, 1062 flow [2022-01-19 07:03:07,938 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1133, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1062, PETRI_PLACES=303, PETRI_TRANSITIONS=235} [2022-01-19 07:03:07,938 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 116 predicate places. [2022-01-19 07:03:07,938 INFO L470 AbstractCegarLoop]: Abstraction has has 303 places, 235 transitions, 1062 flow [2022-01-19 07:03:07,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:07,939 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:07,939 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:07,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-19 07:03:07,939 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:07,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:07,940 INFO L85 PathProgramCache]: Analyzing trace with hash -577054250, now seen corresponding path program 20 times [2022-01-19 07:03:07,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:07,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924951204] [2022-01-19 07:03:07,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:07,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:08,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:08,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:08,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924951204] [2022-01-19 07:03:08,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924951204] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:08,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:08,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:03:08,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432756514] [2022-01-19 07:03:08,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:08,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:03:08,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:08,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:03:08,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:03:08,023 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:03:08,024 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 235 transitions, 1062 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:08,024 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:08,024 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:03:08,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:08,309 INFO L129 PetriNetUnfolder]: 116/882 cut-off events. [2022-01-19 07:03:08,309 INFO L130 PetriNetUnfolder]: For 2289/2309 co-relation queries the response was YES. [2022-01-19 07:03:08,314 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2461 conditions, 882 events. 116/882 cut-off events. For 2289/2309 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5971 event pairs, 68 based on Foata normal form. 9/843 useless extension candidates. Maximal degree in co-relation 2398. Up to 234 conditions per place. [2022-01-19 07:03:08,316 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 38 selfloop transitions, 0 changer transitions 44/248 dead transitions. [2022-01-19 07:03:08,316 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 248 transitions, 1258 flow [2022-01-19 07:03:08,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 07:03:08,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 07:03:08,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2905 transitions. [2022-01-19 07:03:08,318 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8137254901960784 [2022-01-19 07:03:08,318 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2905 transitions. [2022-01-19 07:03:08,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2905 transitions. [2022-01-19 07:03:08,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:08,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2905 transitions. [2022-01-19 07:03:08,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 170.88235294117646) internal successors, (2905), 17 states have internal predecessors, (2905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:08,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:08,322 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:08,322 INFO L186 Difference]: Start difference. First operand has 303 places, 235 transitions, 1062 flow. Second operand 17 states and 2905 transitions. [2022-01-19 07:03:08,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 248 transitions, 1258 flow [2022-01-19 07:03:08,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 248 transitions, 1171 flow, removed 17 selfloop flow, removed 18 redundant places. [2022-01-19 07:03:08,332 INFO L242 Difference]: Finished difference. Result has 287 places, 204 transitions, 701 flow [2022-01-19 07:03:08,333 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=981, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=701, PETRI_PLACES=287, PETRI_TRANSITIONS=204} [2022-01-19 07:03:08,333 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 100 predicate places. [2022-01-19 07:03:08,333 INFO L470 AbstractCegarLoop]: Abstraction has has 287 places, 204 transitions, 701 flow [2022-01-19 07:03:08,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:08,334 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:08,334 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:08,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-19 07:03:08,334 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:08,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:08,334 INFO L85 PathProgramCache]: Analyzing trace with hash 613911462, now seen corresponding path program 3 times [2022-01-19 07:03:08,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:08,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728652107] [2022-01-19 07:03:08,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:08,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:08,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:08,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:08,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:08,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728652107] [2022-01-19 07:03:08,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728652107] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:08,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:08,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:03:08,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957114368] [2022-01-19 07:03:08,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:08,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:03:08,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:08,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:03:08,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:03:08,407 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:03:08,408 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 204 transitions, 701 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:08,408 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:08,408 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:03:08,408 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:08,657 INFO L129 PetriNetUnfolder]: 122/857 cut-off events. [2022-01-19 07:03:08,657 INFO L130 PetriNetUnfolder]: For 2280/2288 co-relation queries the response was YES. [2022-01-19 07:03:08,661 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2344 conditions, 857 events. 122/857 cut-off events. For 2280/2288 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5766 event pairs, 50 based on Foata normal form. 1/814 useless extension candidates. Maximal degree in co-relation 2291. Up to 156 conditions per place. [2022-01-19 07:03:08,663 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 65 selfloop transitions, 15 changer transitions 29/265 dead transitions. [2022-01-19 07:03:08,663 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 265 transitions, 1517 flow [2022-01-19 07:03:08,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 07:03:08,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 07:03:08,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3430 transitions. [2022-01-19 07:03:08,665 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2022-01-19 07:03:08,665 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3430 transitions. [2022-01-19 07:03:08,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3430 transitions. [2022-01-19 07:03:08,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:08,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3430 transitions. [2022-01-19 07:03:08,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.5) internal successors, (3430), 20 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:08,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:08,670 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:08,670 INFO L186 Difference]: Start difference. First operand has 287 places, 204 transitions, 701 flow. Second operand 20 states and 3430 transitions. [2022-01-19 07:03:08,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 265 transitions, 1517 flow [2022-01-19 07:03:08,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 265 transitions, 1440 flow, removed 34 selfloop flow, removed 12 redundant places. [2022-01-19 07:03:08,678 INFO L242 Difference]: Finished difference. Result has 266 places, 216 transitions, 910 flow [2022-01-19 07:03:08,678 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=910, PETRI_PLACES=266, PETRI_TRANSITIONS=216} [2022-01-19 07:03:08,679 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 79 predicate places. [2022-01-19 07:03:08,679 INFO L470 AbstractCegarLoop]: Abstraction has has 266 places, 216 transitions, 910 flow [2022-01-19 07:03:08,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:08,679 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:08,679 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:08,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-19 07:03:08,680 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:08,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:08,680 INFO L85 PathProgramCache]: Analyzing trace with hash -749731324, now seen corresponding path program 4 times [2022-01-19 07:03:08,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:08,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652805724] [2022-01-19 07:03:08,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:08,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:08,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:08,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:08,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:08,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652805724] [2022-01-19 07:03:08,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652805724] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:08,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:08,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:03:08,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49753567] [2022-01-19 07:03:08,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:08,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:03:08,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:08,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:03:08,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:03:08,761 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:03:08,762 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 216 transitions, 910 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:08,762 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:08,762 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:03:08,762 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:09,096 INFO L129 PetriNetUnfolder]: 121/853 cut-off events. [2022-01-19 07:03:09,096 INFO L130 PetriNetUnfolder]: For 3579/3588 co-relation queries the response was YES. [2022-01-19 07:03:09,100 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2584 conditions, 853 events. 121/853 cut-off events. For 3579/3588 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5747 event pairs, 43 based on Foata normal form. 1/812 useless extension candidates. Maximal degree in co-relation 2525. Up to 114 conditions per place. [2022-01-19 07:03:09,102 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 83 selfloop transitions, 17 changer transitions 38/294 dead transitions. [2022-01-19 07:03:09,102 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 294 transitions, 2066 flow [2022-01-19 07:03:09,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 07:03:09,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 07:03:09,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4114 transitions. [2022-01-19 07:03:09,105 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8162698412698413 [2022-01-19 07:03:09,105 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4114 transitions. [2022-01-19 07:03:09,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4114 transitions. [2022-01-19 07:03:09,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:09,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4114 transitions. [2022-01-19 07:03:09,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 171.41666666666666) internal successors, (4114), 24 states have internal predecessors, (4114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:09,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:09,111 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:09,111 INFO L186 Difference]: Start difference. First operand has 266 places, 216 transitions, 910 flow. Second operand 24 states and 4114 transitions. [2022-01-19 07:03:09,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 294 transitions, 2066 flow [2022-01-19 07:03:09,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 294 transitions, 1782 flow, removed 142 selfloop flow, removed 8 redundant places. [2022-01-19 07:03:09,122 INFO L242 Difference]: Finished difference. Result has 289 places, 219 transitions, 959 flow [2022-01-19 07:03:09,122 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=959, PETRI_PLACES=289, PETRI_TRANSITIONS=219} [2022-01-19 07:03:09,122 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 102 predicate places. [2022-01-19 07:03:09,122 INFO L470 AbstractCegarLoop]: Abstraction has has 289 places, 219 transitions, 959 flow [2022-01-19 07:03:09,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:09,123 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:09,123 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:09,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-19 07:03:09,123 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:09,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:09,123 INFO L85 PathProgramCache]: Analyzing trace with hash 726672324, now seen corresponding path program 5 times [2022-01-19 07:03:09,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:09,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520825348] [2022-01-19 07:03:09,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:09,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:09,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:09,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:09,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520825348] [2022-01-19 07:03:09,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520825348] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:09,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:09,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:03:09,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476065978] [2022-01-19 07:03:09,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:09,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:03:09,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:09,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:03:09,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:03:09,196 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:03:09,197 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 219 transitions, 959 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:09,197 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:09,197 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:03:09,197 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:09,482 INFO L129 PetriNetUnfolder]: 131/932 cut-off events. [2022-01-19 07:03:09,482 INFO L130 PetriNetUnfolder]: For 4052/4059 co-relation queries the response was YES. [2022-01-19 07:03:09,487 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2892 conditions, 932 events. 131/932 cut-off events. For 4052/4059 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6578 event pairs, 46 based on Foata normal form. 4/895 useless extension candidates. Maximal degree in co-relation 2820. Up to 165 conditions per place. [2022-01-19 07:03:09,489 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 74 selfloop transitions, 24 changer transitions 30/284 dead transitions. [2022-01-19 07:03:09,489 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 284 transitions, 1964 flow [2022-01-19 07:03:09,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 07:03:09,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 07:03:09,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3766 transitions. [2022-01-19 07:03:09,502 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8151515151515152 [2022-01-19 07:03:09,502 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3766 transitions. [2022-01-19 07:03:09,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3766 transitions. [2022-01-19 07:03:09,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:09,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3766 transitions. [2022-01-19 07:03:09,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 171.1818181818182) internal successors, (3766), 22 states have internal predecessors, (3766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:09,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:09,508 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:09,508 INFO L186 Difference]: Start difference. First operand has 289 places, 219 transitions, 959 flow. Second operand 22 states and 3766 transitions. [2022-01-19 07:03:09,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 284 transitions, 1964 flow [2022-01-19 07:03:09,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 284 transitions, 1841 flow, removed 54 selfloop flow, removed 19 redundant places. [2022-01-19 07:03:09,521 INFO L242 Difference]: Finished difference. Result has 289 places, 231 transitions, 1150 flow [2022-01-19 07:03:09,521 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=897, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1150, PETRI_PLACES=289, PETRI_TRANSITIONS=231} [2022-01-19 07:03:09,521 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 102 predicate places. [2022-01-19 07:03:09,521 INFO L470 AbstractCegarLoop]: Abstraction has has 289 places, 231 transitions, 1150 flow [2022-01-19 07:03:09,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:09,522 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:09,522 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:09,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-19 07:03:09,522 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:09,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:09,522 INFO L85 PathProgramCache]: Analyzing trace with hash 323320088, now seen corresponding path program 6 times [2022-01-19 07:03:09,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:09,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062391270] [2022-01-19 07:03:09,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:09,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:09,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:09,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:09,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062391270] [2022-01-19 07:03:09,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062391270] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:09,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:09,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:03:09,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614181113] [2022-01-19 07:03:09,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:09,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:03:09,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:09,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:03:09,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:03:09,598 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:03:09,599 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 231 transitions, 1150 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:09,599 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:09,599 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:03:09,599 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:09,885 INFO L129 PetriNetUnfolder]: 128/911 cut-off events. [2022-01-19 07:03:09,885 INFO L130 PetriNetUnfolder]: For 3777/3794 co-relation queries the response was YES. [2022-01-19 07:03:09,890 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2855 conditions, 911 events. 128/911 cut-off events. For 3777/3794 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6383 event pairs, 48 based on Foata normal form. 5/874 useless extension candidates. Maximal degree in co-relation 2785. Up to 161 conditions per place. [2022-01-19 07:03:09,892 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 70 selfloop transitions, 24 changer transitions 31/281 dead transitions. [2022-01-19 07:03:09,892 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 281 transitions, 2044 flow [2022-01-19 07:03:09,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 07:03:09,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 07:03:09,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3601 transitions. [2022-01-19 07:03:09,905 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8165532879818594 [2022-01-19 07:03:09,905 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3601 transitions. [2022-01-19 07:03:09,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3601 transitions. [2022-01-19 07:03:09,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:09,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3601 transitions. [2022-01-19 07:03:09,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 171.47619047619048) internal successors, (3601), 21 states have internal predecessors, (3601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:09,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:09,910 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:09,910 INFO L186 Difference]: Start difference. First operand has 289 places, 231 transitions, 1150 flow. Second operand 21 states and 3601 transitions. [2022-01-19 07:03:09,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 281 transitions, 2044 flow [2022-01-19 07:03:09,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 281 transitions, 1908 flow, removed 61 selfloop flow, removed 14 redundant places. [2022-01-19 07:03:09,924 INFO L242 Difference]: Finished difference. Result has 297 places, 235 transitions, 1270 flow [2022-01-19 07:03:09,924 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1270, PETRI_PLACES=297, PETRI_TRANSITIONS=235} [2022-01-19 07:03:09,924 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 110 predicate places. [2022-01-19 07:03:09,924 INFO L470 AbstractCegarLoop]: Abstraction has has 297 places, 235 transitions, 1270 flow [2022-01-19 07:03:09,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:09,925 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:09,925 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:09,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-19 07:03:09,925 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:09,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:09,925 INFO L85 PathProgramCache]: Analyzing trace with hash 2004422760, now seen corresponding path program 7 times [2022-01-19 07:03:09,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:09,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933906979] [2022-01-19 07:03:09,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:09,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:09,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:10,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:10,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:10,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933906979] [2022-01-19 07:03:10,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933906979] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:10,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:10,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:03:10,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011716492] [2022-01-19 07:03:10,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:10,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:03:10,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:10,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:03:10,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:03:10,015 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:03:10,016 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 235 transitions, 1270 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:10,016 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:10,016 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:03:10,016 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:10,260 INFO L129 PetriNetUnfolder]: 120/860 cut-off events. [2022-01-19 07:03:10,260 INFO L130 PetriNetUnfolder]: For 3763/3775 co-relation queries the response was YES. [2022-01-19 07:03:10,265 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2715 conditions, 860 events. 120/860 cut-off events. For 3763/3775 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5790 event pairs, 41 based on Foata normal form. 6/828 useless extension candidates. Maximal degree in co-relation 2642. Up to 165 conditions per place. [2022-01-19 07:03:10,267 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 72 selfloop transitions, 27 changer transitions 25/280 dead transitions. [2022-01-19 07:03:10,267 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 280 transitions, 2105 flow [2022-01-19 07:03:10,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:03:10,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:03:10,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3086 transitions. [2022-01-19 07:03:10,281 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8164021164021164 [2022-01-19 07:03:10,281 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3086 transitions. [2022-01-19 07:03:10,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3086 transitions. [2022-01-19 07:03:10,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:10,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3086 transitions. [2022-01-19 07:03:10,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.44444444444446) internal successors, (3086), 18 states have internal predecessors, (3086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:10,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:10,286 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:10,286 INFO L186 Difference]: Start difference. First operand has 297 places, 235 transitions, 1270 flow. Second operand 18 states and 3086 transitions. [2022-01-19 07:03:10,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 280 transitions, 2105 flow [2022-01-19 07:03:10,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 280 transitions, 1921 flow, removed 67 selfloop flow, removed 14 redundant places. [2022-01-19 07:03:10,300 INFO L242 Difference]: Finished difference. Result has 296 places, 241 transitions, 1350 flow [2022-01-19 07:03:10,300 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1160, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1350, PETRI_PLACES=296, PETRI_TRANSITIONS=241} [2022-01-19 07:03:10,300 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 109 predicate places. [2022-01-19 07:03:10,300 INFO L470 AbstractCegarLoop]: Abstraction has has 296 places, 241 transitions, 1350 flow [2022-01-19 07:03:10,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:10,301 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:10,301 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:10,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-19 07:03:10,301 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:10,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:10,301 INFO L85 PathProgramCache]: Analyzing trace with hash 754246134, now seen corresponding path program 8 times [2022-01-19 07:03:10,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:10,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125682072] [2022-01-19 07:03:10,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:10,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:10,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:10,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:10,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125682072] [2022-01-19 07:03:10,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125682072] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:10,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:10,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:03:10,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370343360] [2022-01-19 07:03:10,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:10,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:03:10,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:10,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:03:10,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:03:10,373 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:03:10,374 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 241 transitions, 1350 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:10,374 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:10,374 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:03:10,374 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:10,574 INFO L129 PetriNetUnfolder]: 108/811 cut-off events. [2022-01-19 07:03:10,574 INFO L130 PetriNetUnfolder]: For 2993/3016 co-relation queries the response was YES. [2022-01-19 07:03:10,578 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2456 conditions, 811 events. 108/811 cut-off events. For 2993/3016 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5311 event pairs, 42 based on Foata normal form. 10/783 useless extension candidates. Maximal degree in co-relation 2386. Up to 156 conditions per place. [2022-01-19 07:03:10,580 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 66 selfloop transitions, 14 changer transitions 27/263 dead transitions. [2022-01-19 07:03:10,580 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 263 transitions, 1805 flow [2022-01-19 07:03:10,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 07:03:10,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 07:03:10,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2741 transitions. [2022-01-19 07:03:10,581 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8157738095238095 [2022-01-19 07:03:10,581 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2741 transitions. [2022-01-19 07:03:10,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2741 transitions. [2022-01-19 07:03:10,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:10,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2741 transitions. [2022-01-19 07:03:10,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 171.3125) internal successors, (2741), 16 states have internal predecessors, (2741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:10,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:10,585 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:10,585 INFO L186 Difference]: Start difference. First operand has 296 places, 241 transitions, 1350 flow. Second operand 16 states and 2741 transitions. [2022-01-19 07:03:10,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 263 transitions, 1805 flow [2022-01-19 07:03:10,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 263 transitions, 1680 flow, removed 44 selfloop flow, removed 11 redundant places. [2022-01-19 07:03:10,598 INFO L242 Difference]: Finished difference. Result has 296 places, 225 transitions, 1071 flow [2022-01-19 07:03:10,599 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1253, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1071, PETRI_PLACES=296, PETRI_TRANSITIONS=225} [2022-01-19 07:03:10,599 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 109 predicate places. [2022-01-19 07:03:10,599 INFO L470 AbstractCegarLoop]: Abstraction has has 296 places, 225 transitions, 1071 flow [2022-01-19 07:03:10,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:10,599 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:10,599 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:10,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-19 07:03:10,599 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:10,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:10,600 INFO L85 PathProgramCache]: Analyzing trace with hash 260612428, now seen corresponding path program 9 times [2022-01-19 07:03:10,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:10,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287922468] [2022-01-19 07:03:10,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:10,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:10,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:10,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:10,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287922468] [2022-01-19 07:03:10,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287922468] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:10,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:10,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:03:10,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13943501] [2022-01-19 07:03:10,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:10,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:03:10,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:10,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:03:10,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:03:10,676 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:03:10,677 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 225 transitions, 1071 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:10,677 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:10,677 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:03:10,677 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:10,904 INFO L129 PetriNetUnfolder]: 113/835 cut-off events. [2022-01-19 07:03:10,904 INFO L130 PetriNetUnfolder]: For 3036/3052 co-relation queries the response was YES. [2022-01-19 07:03:10,909 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2498 conditions, 835 events. 113/835 cut-off events. For 3036/3052 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5550 event pairs, 44 based on Foata normal form. 4/799 useless extension candidates. Maximal degree in co-relation 2432. Up to 158 conditions per place. [2022-01-19 07:03:10,911 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 63 selfloop transitions, 23 changer transitions 24/266 dead transitions. [2022-01-19 07:03:10,911 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 266 transitions, 1809 flow [2022-01-19 07:03:10,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 07:03:10,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 07:03:10,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2921 transitions. [2022-01-19 07:03:10,921 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8182072829131652 [2022-01-19 07:03:10,921 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2921 transitions. [2022-01-19 07:03:10,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2921 transitions. [2022-01-19 07:03:10,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:10,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2921 transitions. [2022-01-19 07:03:10,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.8235294117647) internal successors, (2921), 17 states have internal predecessors, (2921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:10,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:10,925 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:10,925 INFO L186 Difference]: Start difference. First operand has 296 places, 225 transitions, 1071 flow. Second operand 17 states and 2921 transitions. [2022-01-19 07:03:10,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 266 transitions, 1809 flow [2022-01-19 07:03:10,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 266 transitions, 1700 flow, removed 17 selfloop flow, removed 14 redundant places. [2022-01-19 07:03:10,936 INFO L242 Difference]: Finished difference. Result has 287 places, 233 transitions, 1223 flow [2022-01-19 07:03:10,936 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1009, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1223, PETRI_PLACES=287, PETRI_TRANSITIONS=233} [2022-01-19 07:03:10,936 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 100 predicate places. [2022-01-19 07:03:10,937 INFO L470 AbstractCegarLoop]: Abstraction has has 287 places, 233 transitions, 1223 flow [2022-01-19 07:03:10,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:10,937 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:10,937 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:10,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-19 07:03:10,937 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:10,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:10,938 INFO L85 PathProgramCache]: Analyzing trace with hash -695288172, now seen corresponding path program 10 times [2022-01-19 07:03:10,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:10,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864390937] [2022-01-19 07:03:10,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:10,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:11,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:11,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:11,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864390937] [2022-01-19 07:03:11,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864390937] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:11,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:11,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:03:11,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259098519] [2022-01-19 07:03:11,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:11,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:03:11,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:11,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:03:11,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:03:11,045 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:03:11,046 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 233 transitions, 1223 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:11,046 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:11,046 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:03:11,046 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:11,289 INFO L129 PetriNetUnfolder]: 114/816 cut-off events. [2022-01-19 07:03:11,289 INFO L130 PetriNetUnfolder]: For 2994/3010 co-relation queries the response was YES. [2022-01-19 07:03:11,293 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2515 conditions, 816 events. 114/816 cut-off events. For 2994/3010 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5336 event pairs, 46 based on Foata normal form. 4/779 useless extension candidates. Maximal degree in co-relation 2449. Up to 161 conditions per place. [2022-01-19 07:03:11,295 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 64 selfloop transitions, 25 changer transitions 24/269 dead transitions. [2022-01-19 07:03:11,295 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 269 transitions, 1939 flow [2022-01-19 07:03:11,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 07:03:11,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 07:03:11,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2919 transitions. [2022-01-19 07:03:11,298 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8176470588235294 [2022-01-19 07:03:11,298 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2919 transitions. [2022-01-19 07:03:11,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2919 transitions. [2022-01-19 07:03:11,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:11,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2919 transitions. [2022-01-19 07:03:11,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.7058823529412) internal successors, (2919), 17 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:11,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:11,302 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:11,302 INFO L186 Difference]: Start difference. First operand has 287 places, 233 transitions, 1223 flow. Second operand 17 states and 2919 transitions. [2022-01-19 07:03:11,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 269 transitions, 1939 flow [2022-01-19 07:03:11,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 269 transitions, 1819 flow, removed 36 selfloop flow, removed 9 redundant places. [2022-01-19 07:03:11,314 INFO L242 Difference]: Finished difference. Result has 295 places, 240 transitions, 1341 flow [2022-01-19 07:03:11,315 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1341, PETRI_PLACES=295, PETRI_TRANSITIONS=240} [2022-01-19 07:03:11,315 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 108 predicate places. [2022-01-19 07:03:11,315 INFO L470 AbstractCegarLoop]: Abstraction has has 295 places, 240 transitions, 1341 flow [2022-01-19 07:03:11,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:11,315 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:11,315 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:11,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-19 07:03:11,316 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:11,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:11,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1027010308, now seen corresponding path program 11 times [2022-01-19 07:03:11,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:11,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596334114] [2022-01-19 07:03:11,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:11,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:11,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:11,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:11,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:11,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596334114] [2022-01-19 07:03:11,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596334114] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:11,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:11,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:03:11,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802516267] [2022-01-19 07:03:11,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:11,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:03:11,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:11,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:03:11,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:03:11,397 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:03:11,398 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 240 transitions, 1341 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:11,398 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:11,398 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:03:11,398 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:11,639 INFO L129 PetriNetUnfolder]: 103/800 cut-off events. [2022-01-19 07:03:11,639 INFO L130 PetriNetUnfolder]: For 2562/2578 co-relation queries the response was YES. [2022-01-19 07:03:11,644 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2313 conditions, 800 events. 103/800 cut-off events. For 2562/2578 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5262 event pairs, 42 based on Foata normal form. 4/766 useless extension candidates. Maximal degree in co-relation 2244. Up to 154 conditions per place. [2022-01-19 07:03:11,645 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 61 selfloop transitions, 14 changer transitions 30/261 dead transitions. [2022-01-19 07:03:11,645 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 261 transitions, 1750 flow [2022-01-19 07:03:11,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:03:11,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:03:11,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3084 transitions. [2022-01-19 07:03:11,657 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8158730158730159 [2022-01-19 07:03:11,657 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3084 transitions. [2022-01-19 07:03:11,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3084 transitions. [2022-01-19 07:03:11,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:11,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3084 transitions. [2022-01-19 07:03:11,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.33333333333334) internal successors, (3084), 18 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:11,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:11,661 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:11,661 INFO L186 Difference]: Start difference. First operand has 295 places, 240 transitions, 1341 flow. Second operand 18 states and 3084 transitions. [2022-01-19 07:03:11,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 261 transitions, 1750 flow [2022-01-19 07:03:11,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 261 transitions, 1662 flow, removed 28 selfloop flow, removed 8 redundant places. [2022-01-19 07:03:11,674 INFO L242 Difference]: Finished difference. Result has 301 places, 226 transitions, 1085 flow [2022-01-19 07:03:11,674 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1263, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1085, PETRI_PLACES=301, PETRI_TRANSITIONS=226} [2022-01-19 07:03:11,675 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 114 predicate places. [2022-01-19 07:03:11,675 INFO L470 AbstractCegarLoop]: Abstraction has has 301 places, 226 transitions, 1085 flow [2022-01-19 07:03:11,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:11,675 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:11,675 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:11,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-19 07:03:11,675 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:11,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:11,676 INFO L85 PathProgramCache]: Analyzing trace with hash 863813416, now seen corresponding path program 12 times [2022-01-19 07:03:11,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:11,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735059828] [2022-01-19 07:03:11,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:11,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:11,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:11,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:11,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:11,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735059828] [2022-01-19 07:03:11,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735059828] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:11,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:11,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:03:11,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104330795] [2022-01-19 07:03:11,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:11,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:03:11,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:11,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:03:11,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:03:11,775 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:03:11,776 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 226 transitions, 1085 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:11,776 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:11,776 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:03:11,776 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:12,003 INFO L129 PetriNetUnfolder]: 89/716 cut-off events. [2022-01-19 07:03:12,003 INFO L130 PetriNetUnfolder]: For 2081/2097 co-relation queries the response was YES. [2022-01-19 07:03:12,007 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1964 conditions, 716 events. 89/716 cut-off events. For 2081/2097 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4429 event pairs, 42 based on Foata normal form. 4/683 useless extension candidates. Maximal degree in co-relation 1896. Up to 144 conditions per place. [2022-01-19 07:03:12,008 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 51 selfloop transitions, 3 changer transitions 29/239 dead transitions. [2022-01-19 07:03:12,008 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 239 transitions, 1372 flow [2022-01-19 07:03:12,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:03:12,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:03:12,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3073 transitions. [2022-01-19 07:03:12,023 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.812962962962963 [2022-01-19 07:03:12,023 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3073 transitions. [2022-01-19 07:03:12,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3073 transitions. [2022-01-19 07:03:12,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:12,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3073 transitions. [2022-01-19 07:03:12,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 170.72222222222223) internal successors, (3073), 18 states have internal predecessors, (3073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:12,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:12,027 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:12,028 INFO L186 Difference]: Start difference. First operand has 301 places, 226 transitions, 1085 flow. Second operand 18 states and 3073 transitions. [2022-01-19 07:03:12,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 239 transitions, 1372 flow [2022-01-19 07:03:12,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 239 transitions, 1255 flow, removed 19 selfloop flow, removed 19 redundant places. [2022-01-19 07:03:12,037 INFO L242 Difference]: Finished difference. Result has 287 places, 206 transitions, 762 flow [2022-01-19 07:03:12,038 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=984, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=762, PETRI_PLACES=287, PETRI_TRANSITIONS=206} [2022-01-19 07:03:12,038 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 100 predicate places. [2022-01-19 07:03:12,038 INFO L470 AbstractCegarLoop]: Abstraction has has 287 places, 206 transitions, 762 flow [2022-01-19 07:03:12,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:12,038 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:12,038 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:12,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-19 07:03:12,039 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:12,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:12,039 INFO L85 PathProgramCache]: Analyzing trace with hash -484428534, now seen corresponding path program 13 times [2022-01-19 07:03:12,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:12,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857352666] [2022-01-19 07:03:12,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:12,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:12,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:12,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:12,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857352666] [2022-01-19 07:03:12,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857352666] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:12,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:12,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:03:12,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091182620] [2022-01-19 07:03:12,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:12,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:03:12,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:12,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:03:12,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:03:12,117 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:03:12,118 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 206 transitions, 762 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:12,118 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:12,118 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:03:12,118 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:12,391 INFO L129 PetriNetUnfolder]: 104/809 cut-off events. [2022-01-19 07:03:12,391 INFO L130 PetriNetUnfolder]: For 2107/2110 co-relation queries the response was YES. [2022-01-19 07:03:12,395 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2177 conditions, 809 events. 104/809 cut-off events. For 2107/2110 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5324 event pairs, 39 based on Foata normal form. 1/775 useless extension candidates. Maximal degree in co-relation 2114. Up to 129 conditions per place. [2022-01-19 07:03:12,397 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 56 selfloop transitions, 20 changer transitions 29/261 dead transitions. [2022-01-19 07:03:12,397 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 261 transitions, 1591 flow [2022-01-19 07:03:12,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 07:03:12,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 07:03:12,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3762 transitions. [2022-01-19 07:03:12,399 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8142857142857143 [2022-01-19 07:03:12,399 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3762 transitions. [2022-01-19 07:03:12,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3762 transitions. [2022-01-19 07:03:12,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:12,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3762 transitions. [2022-01-19 07:03:12,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 171.0) internal successors, (3762), 22 states have internal predecessors, (3762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:12,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:12,403 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:12,403 INFO L186 Difference]: Start difference. First operand has 287 places, 206 transitions, 762 flow. Second operand 22 states and 3762 transitions. [2022-01-19 07:03:12,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 261 transitions, 1591 flow [2022-01-19 07:03:12,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 261 transitions, 1442 flow, removed 33 selfloop flow, removed 20 redundant places. [2022-01-19 07:03:12,411 INFO L242 Difference]: Finished difference. Result has 274 places, 218 transitions, 916 flow [2022-01-19 07:03:12,412 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=916, PETRI_PLACES=274, PETRI_TRANSITIONS=218} [2022-01-19 07:03:12,412 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 87 predicate places. [2022-01-19 07:03:12,412 INFO L470 AbstractCegarLoop]: Abstraction has has 274 places, 218 transitions, 916 flow [2022-01-19 07:03:12,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:12,412 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:12,412 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:12,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-19 07:03:12,413 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:12,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:12,413 INFO L85 PathProgramCache]: Analyzing trace with hash 375959954, now seen corresponding path program 14 times [2022-01-19 07:03:12,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:12,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220730430] [2022-01-19 07:03:12,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:12,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:12,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:12,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:12,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220730430] [2022-01-19 07:03:12,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220730430] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:12,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:12,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:03:12,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507426289] [2022-01-19 07:03:12,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:12,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:03:12,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:12,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:03:12,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:03:12,501 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:03:12,502 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 218 transitions, 916 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:12,502 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:12,502 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:03:12,502 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:12,743 INFO L129 PetriNetUnfolder]: 106/799 cut-off events. [2022-01-19 07:03:12,743 INFO L130 PetriNetUnfolder]: For 2143/2146 co-relation queries the response was YES. [2022-01-19 07:03:12,746 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2256 conditions, 799 events. 106/799 cut-off events. For 2143/2146 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5172 event pairs, 41 based on Foata normal form. 1/764 useless extension candidates. Maximal degree in co-relation 2195. Up to 139 conditions per place. [2022-01-19 07:03:12,747 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 54 selfloop transitions, 27 changer transitions 24/261 dead transitions. [2022-01-19 07:03:12,747 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 261 transitions, 1636 flow [2022-01-19 07:03:12,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 07:03:12,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 07:03:12,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2914 transitions. [2022-01-19 07:03:12,749 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8162464985994398 [2022-01-19 07:03:12,749 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2914 transitions. [2022-01-19 07:03:12,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2914 transitions. [2022-01-19 07:03:12,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:12,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2914 transitions. [2022-01-19 07:03:12,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.41176470588235) internal successors, (2914), 17 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:12,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:12,752 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:12,752 INFO L186 Difference]: Start difference. First operand has 274 places, 218 transitions, 916 flow. Second operand 17 states and 2914 transitions. [2022-01-19 07:03:12,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 261 transitions, 1636 flow [2022-01-19 07:03:12,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 261 transitions, 1553 flow, removed 35 selfloop flow, removed 11 redundant places. [2022-01-19 07:03:12,760 INFO L242 Difference]: Finished difference. Result has 275 places, 226 transitions, 1075 flow [2022-01-19 07:03:12,760 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1075, PETRI_PLACES=275, PETRI_TRANSITIONS=226} [2022-01-19 07:03:12,760 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 88 predicate places. [2022-01-19 07:03:12,760 INFO L470 AbstractCegarLoop]: Abstraction has has 275 places, 226 transitions, 1075 flow [2022-01-19 07:03:12,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:12,761 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:12,761 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:12,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-19 07:03:12,761 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:12,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:12,761 INFO L85 PathProgramCache]: Analyzing trace with hash -406108784, now seen corresponding path program 15 times [2022-01-19 07:03:12,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:12,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306584802] [2022-01-19 07:03:12,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:12,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:12,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:12,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:12,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:12,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306584802] [2022-01-19 07:03:12,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306584802] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:12,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:12,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:03:12,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175704312] [2022-01-19 07:03:12,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:12,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:03:12,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:12,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:03:12,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:03:12,853 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:03:12,854 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 226 transitions, 1075 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:12,854 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:12,854 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:03:12,854 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:13,066 INFO L129 PetriNetUnfolder]: 104/816 cut-off events. [2022-01-19 07:03:13,066 INFO L130 PetriNetUnfolder]: For 2435/2438 co-relation queries the response was YES. [2022-01-19 07:03:13,070 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2318 conditions, 816 events. 104/816 cut-off events. For 2435/2438 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5412 event pairs, 39 based on Foata normal form. 1/781 useless extension candidates. Maximal degree in co-relation 2257. Up to 140 conditions per place. [2022-01-19 07:03:13,072 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 56 selfloop transitions, 24 changer transitions 27/263 dead transitions. [2022-01-19 07:03:13,072 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 263 transitions, 1729 flow [2022-01-19 07:03:13,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 07:03:13,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 07:03:13,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2749 transitions. [2022-01-19 07:03:13,073 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8181547619047619 [2022-01-19 07:03:13,073 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2749 transitions. [2022-01-19 07:03:13,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2749 transitions. [2022-01-19 07:03:13,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:13,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2749 transitions. [2022-01-19 07:03:13,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 171.8125) internal successors, (2749), 16 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:13,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:13,077 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:13,077 INFO L186 Difference]: Start difference. First operand has 275 places, 226 transitions, 1075 flow. Second operand 16 states and 2749 transitions. [2022-01-19 07:03:13,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 263 transitions, 1729 flow [2022-01-19 07:03:13,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 263 transitions, 1623 flow, removed 26 selfloop flow, removed 9 redundant places. [2022-01-19 07:03:13,086 INFO L242 Difference]: Finished difference. Result has 281 places, 230 transitions, 1147 flow [2022-01-19 07:03:13,087 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=998, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1147, PETRI_PLACES=281, PETRI_TRANSITIONS=230} [2022-01-19 07:03:13,087 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 94 predicate places. [2022-01-19 07:03:13,087 INFO L470 AbstractCegarLoop]: Abstraction has has 281 places, 230 transitions, 1147 flow [2022-01-19 07:03:13,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:13,087 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:13,087 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:13,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-19 07:03:13,088 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:13,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:13,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1088777360, now seen corresponding path program 16 times [2022-01-19 07:03:13,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:13,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195425101] [2022-01-19 07:03:13,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:13,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:13,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:13,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:13,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:13,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195425101] [2022-01-19 07:03:13,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195425101] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:13,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:13,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:03:13,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440886343] [2022-01-19 07:03:13,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:13,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:03:13,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:13,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:03:13,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:03:13,174 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:03:13,175 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 230 transitions, 1147 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:13,175 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:13,175 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:03:13,175 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:13,447 INFO L129 PetriNetUnfolder]: 103/803 cut-off events. [2022-01-19 07:03:13,447 INFO L130 PetriNetUnfolder]: For 2500/2503 co-relation queries the response was YES. [2022-01-19 07:03:13,451 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2298 conditions, 803 events. 103/803 cut-off events. For 2500/2503 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5272 event pairs, 38 based on Foata normal form. 1/768 useless extension candidates. Maximal degree in co-relation 2235. Up to 127 conditions per place. [2022-01-19 07:03:13,453 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 61 selfloop transitions, 25 changer transitions 29/271 dead transitions. [2022-01-19 07:03:13,453 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 271 transitions, 1937 flow [2022-01-19 07:03:13,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 07:03:13,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 07:03:13,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3592 transitions. [2022-01-19 07:03:13,455 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8145124716553288 [2022-01-19 07:03:13,455 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3592 transitions. [2022-01-19 07:03:13,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3592 transitions. [2022-01-19 07:03:13,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:13,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3592 transitions. [2022-01-19 07:03:13,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 171.04761904761904) internal successors, (3592), 21 states have internal predecessors, (3592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:13,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:13,459 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:13,459 INFO L186 Difference]: Start difference. First operand has 281 places, 230 transitions, 1147 flow. Second operand 21 states and 3592 transitions. [2022-01-19 07:03:13,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 271 transitions, 1937 flow [2022-01-19 07:03:13,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 271 transitions, 1810 flow, removed 37 selfloop flow, removed 8 redundant places. [2022-01-19 07:03:13,469 INFO L242 Difference]: Finished difference. Result has 300 places, 233 transitions, 1223 flow [2022-01-19 07:03:13,470 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1223, PETRI_PLACES=300, PETRI_TRANSITIONS=233} [2022-01-19 07:03:13,470 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 113 predicate places. [2022-01-19 07:03:13,470 INFO L470 AbstractCegarLoop]: Abstraction has has 300 places, 233 transitions, 1223 flow [2022-01-19 07:03:13,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:13,470 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:13,470 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:13,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-19 07:03:13,471 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:13,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:13,471 INFO L85 PathProgramCache]: Analyzing trace with hash -714938564, now seen corresponding path program 17 times [2022-01-19 07:03:13,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:13,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244826876] [2022-01-19 07:03:13,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:13,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:13,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:13,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:13,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:13,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244826876] [2022-01-19 07:03:13,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244826876] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:13,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:13,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:03:13,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232450477] [2022-01-19 07:03:13,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:13,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:03:13,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:13,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:03:13,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:03:13,560 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:03:13,560 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 233 transitions, 1223 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:13,561 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:13,561 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:03:13,561 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:13,769 INFO L129 PetriNetUnfolder]: 88/727 cut-off events. [2022-01-19 07:03:13,770 INFO L130 PetriNetUnfolder]: For 2321/2324 co-relation queries the response was YES. [2022-01-19 07:03:13,774 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2036 conditions, 727 events. 88/727 cut-off events. For 2321/2324 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4538 event pairs, 35 based on Foata normal form. 1/693 useless extension candidates. Maximal degree in co-relation 1965. Up to 129 conditions per place. [2022-01-19 07:03:13,775 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 54 selfloop transitions, 13 changer transitions 29/252 dead transitions. [2022-01-19 07:03:13,775 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 252 transitions, 1616 flow [2022-01-19 07:03:13,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:03:13,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:03:13,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3077 transitions. [2022-01-19 07:03:13,777 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.814021164021164 [2022-01-19 07:03:13,777 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3077 transitions. [2022-01-19 07:03:13,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3077 transitions. [2022-01-19 07:03:13,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:13,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3077 transitions. [2022-01-19 07:03:13,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 170.94444444444446) internal successors, (3077), 18 states have internal predecessors, (3077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:13,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:13,781 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:13,781 INFO L186 Difference]: Start difference. First operand has 300 places, 233 transitions, 1223 flow. Second operand 18 states and 3077 transitions. [2022-01-19 07:03:13,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 252 transitions, 1616 flow [2022-01-19 07:03:13,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 252 transitions, 1502 flow, removed 37 selfloop flow, removed 16 redundant places. [2022-01-19 07:03:13,792 INFO L242 Difference]: Finished difference. Result has 295 places, 218 transitions, 983 flow [2022-01-19 07:03:13,793 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1138, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=983, PETRI_PLACES=295, PETRI_TRANSITIONS=218} [2022-01-19 07:03:13,793 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 108 predicate places. [2022-01-19 07:03:13,793 INFO L470 AbstractCegarLoop]: Abstraction has has 295 places, 218 transitions, 983 flow [2022-01-19 07:03:13,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:13,793 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:13,793 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:13,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-19 07:03:13,794 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:13,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:13,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1676233364, now seen corresponding path program 18 times [2022-01-19 07:03:13,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:13,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619618484] [2022-01-19 07:03:13,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:13,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:13,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:13,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:13,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619618484] [2022-01-19 07:03:13,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619618484] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:13,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:13,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:03:13,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613720744] [2022-01-19 07:03:13,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:13,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:03:13,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:13,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:03:13,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:03:13,871 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:03:13,872 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 218 transitions, 983 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:13,872 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:13,872 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:03:13,872 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:14,084 INFO L129 PetriNetUnfolder]: 84/702 cut-off events. [2022-01-19 07:03:14,084 INFO L130 PetriNetUnfolder]: For 2014/2017 co-relation queries the response was YES. [2022-01-19 07:03:14,088 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1905 conditions, 702 events. 84/702 cut-off events. For 2014/2017 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4293 event pairs, 37 based on Foata normal form. 1/667 useless extension candidates. Maximal degree in co-relation 1840. Up to 125 conditions per place. [2022-01-19 07:03:14,089 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 44 selfloop transitions, 21 changer transitions 26/247 dead transitions. [2022-01-19 07:03:14,089 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 247 transitions, 1551 flow [2022-01-19 07:03:14,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:03:14,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:03:14,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3082 transitions. [2022-01-19 07:03:14,091 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8153439153439154 [2022-01-19 07:03:14,091 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3082 transitions. [2022-01-19 07:03:14,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3082 transitions. [2022-01-19 07:03:14,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:14,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3082 transitions. [2022-01-19 07:03:14,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.22222222222223) internal successors, (3082), 18 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:14,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:14,095 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:14,095 INFO L186 Difference]: Start difference. First operand has 295 places, 218 transitions, 983 flow. Second operand 18 states and 3082 transitions. [2022-01-19 07:03:14,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 247 transitions, 1551 flow [2022-01-19 07:03:14,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 247 transitions, 1403 flow, removed 34 selfloop flow, removed 19 redundant places. [2022-01-19 07:03:14,105 INFO L242 Difference]: Finished difference. Result has 275 places, 219 transitions, 987 flow [2022-01-19 07:03:14,105 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=987, PETRI_PLACES=275, PETRI_TRANSITIONS=219} [2022-01-19 07:03:14,105 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 88 predicate places. [2022-01-19 07:03:14,105 INFO L470 AbstractCegarLoop]: Abstraction has has 275 places, 219 transitions, 987 flow [2022-01-19 07:03:14,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:14,106 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:14,106 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:14,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-19 07:03:14,106 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:14,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:14,106 INFO L85 PathProgramCache]: Analyzing trace with hash -287046144, now seen corresponding path program 19 times [2022-01-19 07:03:14,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:14,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129474404] [2022-01-19 07:03:14,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:14,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:14,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:14,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:14,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129474404] [2022-01-19 07:03:14,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129474404] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:14,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:14,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:03:14,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512711132] [2022-01-19 07:03:14,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:14,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:03:14,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:14,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:03:14,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:03:14,192 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:03:14,193 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 219 transitions, 987 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:14,193 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:14,193 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:03:14,193 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:14,394 INFO L129 PetriNetUnfolder]: 80/674 cut-off events. [2022-01-19 07:03:14,394 INFO L130 PetriNetUnfolder]: For 1330/1333 co-relation queries the response was YES. [2022-01-19 07:03:14,397 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1714 conditions, 674 events. 80/674 cut-off events. For 1330/1333 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4077 event pairs, 36 based on Foata normal form. 1/638 useless extension candidates. Maximal degree in co-relation 1657. Up to 124 conditions per place. [2022-01-19 07:03:14,399 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 43 selfloop transitions, 12 changer transitions 29/240 dead transitions. [2022-01-19 07:03:14,399 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 240 transitions, 1340 flow [2022-01-19 07:03:14,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 07:03:14,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 07:03:14,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2911 transitions. [2022-01-19 07:03:14,402 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.815406162464986 [2022-01-19 07:03:14,402 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2911 transitions. [2022-01-19 07:03:14,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2911 transitions. [2022-01-19 07:03:14,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:14,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2911 transitions. [2022-01-19 07:03:14,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.23529411764707) internal successors, (2911), 17 states have internal predecessors, (2911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:14,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:14,405 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:14,405 INFO L186 Difference]: Start difference. First operand has 275 places, 219 transitions, 987 flow. Second operand 17 states and 2911 transitions. [2022-01-19 07:03:14,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 240 transitions, 1340 flow [2022-01-19 07:03:14,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 240 transitions, 1212 flow, removed 31 selfloop flow, removed 11 redundant places. [2022-01-19 07:03:14,413 INFO L242 Difference]: Finished difference. Result has 278 places, 210 transitions, 812 flow [2022-01-19 07:03:14,413 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=812, PETRI_PLACES=278, PETRI_TRANSITIONS=210} [2022-01-19 07:03:14,413 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 91 predicate places. [2022-01-19 07:03:14,413 INFO L470 AbstractCegarLoop]: Abstraction has has 278 places, 210 transitions, 812 flow [2022-01-19 07:03:14,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:14,414 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:14,414 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:14,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-19 07:03:14,414 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:14,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:14,414 INFO L85 PathProgramCache]: Analyzing trace with hash -590390434, now seen corresponding path program 20 times [2022-01-19 07:03:14,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:14,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373188972] [2022-01-19 07:03:14,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:14,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:14,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:14,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:14,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373188972] [2022-01-19 07:03:14,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373188972] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:14,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:14,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 07:03:14,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071650622] [2022-01-19 07:03:14,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:14,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 07:03:14,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:14,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 07:03:14,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 07:03:14,500 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 07:03:14,501 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 210 transitions, 812 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:14,501 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:14,501 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 07:03:14,501 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:14,682 INFO L129 PetriNetUnfolder]: 66/586 cut-off events. [2022-01-19 07:03:14,682 INFO L130 PetriNetUnfolder]: For 820/823 co-relation queries the response was YES. [2022-01-19 07:03:14,685 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1342 conditions, 586 events. 66/586 cut-off events. For 820/823 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3388 event pairs, 33 based on Foata normal form. 1/552 useless extension candidates. Maximal degree in co-relation 1285. Up to 101 conditions per place. [2022-01-19 07:03:14,686 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 29 selfloop transitions, 0 changer transitions 41/220 dead transitions. [2022-01-19 07:03:14,686 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 220 transitions, 991 flow [2022-01-19 07:03:14,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:03:14,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:03:14,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3069 transitions. [2022-01-19 07:03:14,694 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8119047619047619 [2022-01-19 07:03:14,694 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3069 transitions. [2022-01-19 07:03:14,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3069 transitions. [2022-01-19 07:03:14,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:14,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3069 transitions. [2022-01-19 07:03:14,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 170.5) internal successors, (3069), 18 states have internal predecessors, (3069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:14,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:14,698 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:14,698 INFO L186 Difference]: Start difference. First operand has 278 places, 210 transitions, 812 flow. Second operand 18 states and 3069 transitions. [2022-01-19 07:03:14,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 220 transitions, 991 flow [2022-01-19 07:03:14,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 220 transitions, 914 flow, removed 16 selfloop flow, removed 17 redundant places. [2022-01-19 07:03:14,703 INFO L242 Difference]: Finished difference. Result has 265 places, 179 transitions, 472 flow [2022-01-19 07:03:14,703 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=472, PETRI_PLACES=265, PETRI_TRANSITIONS=179} [2022-01-19 07:03:14,704 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 78 predicate places. [2022-01-19 07:03:14,704 INFO L470 AbstractCegarLoop]: Abstraction has has 265 places, 179 transitions, 472 flow [2022-01-19 07:03:14,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:14,704 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:14,704 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:14,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-19 07:03:14,704 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:14,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:14,705 INFO L85 PathProgramCache]: Analyzing trace with hash 470272266, now seen corresponding path program 1 times [2022-01-19 07:03:14,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:14,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503691025] [2022-01-19 07:03:14,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:14,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:14,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:14,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:14,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:14,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503691025] [2022-01-19 07:03:14,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503691025] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:14,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:14,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:03:14,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619374678] [2022-01-19 07:03:14,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:14,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:03:14,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:14,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:03:14,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:03:14,821 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:03:14,822 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 179 transitions, 472 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:14,822 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:14,822 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:03:14,822 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:15,278 INFO L129 PetriNetUnfolder]: 336/1137 cut-off events. [2022-01-19 07:03:15,278 INFO L130 PetriNetUnfolder]: For 2119/2120 co-relation queries the response was YES. [2022-01-19 07:03:15,283 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2965 conditions, 1137 events. 336/1137 cut-off events. For 2119/2120 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 7293 event pairs, 109 based on Foata normal form. 1/1077 useless extension candidates. Maximal degree in co-relation 2915. Up to 309 conditions per place. [2022-01-19 07:03:15,285 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 102 selfloop transitions, 30 changer transitions 43/312 dead transitions. [2022-01-19 07:03:15,285 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 312 transitions, 1656 flow [2022-01-19 07:03:15,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:03:15,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:03:15,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4659 transitions. [2022-01-19 07:03:15,288 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.765024630541872 [2022-01-19 07:03:15,288 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4659 transitions. [2022-01-19 07:03:15,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4659 transitions. [2022-01-19 07:03:15,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:15,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4659 transitions. [2022-01-19 07:03:15,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.6551724137931) internal successors, (4659), 29 states have internal predecessors, (4659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:15,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:15,294 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:15,294 INFO L186 Difference]: Start difference. First operand has 265 places, 179 transitions, 472 flow. Second operand 29 states and 4659 transitions. [2022-01-19 07:03:15,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 312 transitions, 1656 flow [2022-01-19 07:03:15,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 312 transitions, 1502 flow, removed 77 selfloop flow, removed 11 redundant places. [2022-01-19 07:03:15,300 INFO L242 Difference]: Finished difference. Result has 259 places, 211 transitions, 826 flow [2022-01-19 07:03:15,300 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=826, PETRI_PLACES=259, PETRI_TRANSITIONS=211} [2022-01-19 07:03:15,301 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 72 predicate places. [2022-01-19 07:03:15,301 INFO L470 AbstractCegarLoop]: Abstraction has has 259 places, 211 transitions, 826 flow [2022-01-19 07:03:15,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:15,301 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:15,301 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:15,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-19 07:03:15,301 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:15,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:15,302 INFO L85 PathProgramCache]: Analyzing trace with hash 238501890, now seen corresponding path program 2 times [2022-01-19 07:03:15,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:15,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895947480] [2022-01-19 07:03:15,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:15,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:15,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:15,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:15,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:15,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895947480] [2022-01-19 07:03:15,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895947480] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:15,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:15,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:03:15,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509026126] [2022-01-19 07:03:15,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:15,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:03:15,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:15,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:03:15,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:03:15,411 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:03:15,412 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 211 transitions, 826 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:15,412 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:15,412 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:03:15,412 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:15,919 INFO L129 PetriNetUnfolder]: 521/1512 cut-off events. [2022-01-19 07:03:15,920 INFO L130 PetriNetUnfolder]: For 5285/5285 co-relation queries the response was YES. [2022-01-19 07:03:15,928 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5360 conditions, 1512 events. 521/1512 cut-off events. For 5285/5285 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 10267 event pairs, 172 based on Foata normal form. 1/1440 useless extension candidates. Maximal degree in co-relation 5300. Up to 503 conditions per place. [2022-01-19 07:03:15,931 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 137 selfloop transitions, 43 changer transitions 43/360 dead transitions. [2022-01-19 07:03:15,931 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 360 transitions, 2389 flow [2022-01-19 07:03:15,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-19 07:03:15,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-01-19 07:03:15,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4191 transitions. [2022-01-19 07:03:15,933 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7675824175824176 [2022-01-19 07:03:15,933 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4191 transitions. [2022-01-19 07:03:15,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4191 transitions. [2022-01-19 07:03:15,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:15,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4191 transitions. [2022-01-19 07:03:15,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 161.19230769230768) internal successors, (4191), 26 states have internal predecessors, (4191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:15,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:15,939 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:15,939 INFO L186 Difference]: Start difference. First operand has 259 places, 211 transitions, 826 flow. Second operand 26 states and 4191 transitions. [2022-01-19 07:03:15,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 360 transitions, 2389 flow [2022-01-19 07:03:15,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 360 transitions, 2014 flow, removed 182 selfloop flow, removed 13 redundant places. [2022-01-19 07:03:15,955 INFO L242 Difference]: Finished difference. Result has 280 places, 239 transitions, 1102 flow [2022-01-19 07:03:15,956 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1102, PETRI_PLACES=280, PETRI_TRANSITIONS=239} [2022-01-19 07:03:15,956 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 93 predicate places. [2022-01-19 07:03:15,956 INFO L470 AbstractCegarLoop]: Abstraction has has 280 places, 239 transitions, 1102 flow [2022-01-19 07:03:15,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:15,956 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:15,956 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:15,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-19 07:03:15,957 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:15,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:15,957 INFO L85 PathProgramCache]: Analyzing trace with hash -750854726, now seen corresponding path program 3 times [2022-01-19 07:03:15,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:15,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698470259] [2022-01-19 07:03:15,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:15,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:16,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:16,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:16,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698470259] [2022-01-19 07:03:16,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698470259] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:16,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:16,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:03:16,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757074234] [2022-01-19 07:03:16,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:16,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:03:16,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:16,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:03:16,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:03:16,069 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:03:16,069 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 239 transitions, 1102 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:16,069 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:16,070 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:03:16,070 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:17,086 INFO L129 PetriNetUnfolder]: 553/1727 cut-off events. [2022-01-19 07:03:17,087 INFO L130 PetriNetUnfolder]: For 7207/7207 co-relation queries the response was YES. [2022-01-19 07:03:17,100 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6575 conditions, 1727 events. 553/1727 cut-off events. For 7207/7207 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 12651 event pairs, 191 based on Foata normal form. 1/1657 useless extension candidates. Maximal degree in co-relation 6504. Up to 494 conditions per place. [2022-01-19 07:03:17,104 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 271 selfloop transitions, 29 changer transitions 94/531 dead transitions. [2022-01-19 07:03:17,104 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 531 transitions, 4332 flow [2022-01-19 07:03:17,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-19 07:03:17,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-01-19 07:03:17,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 9250 transitions. [2022-01-19 07:03:17,109 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7594417077175698 [2022-01-19 07:03:17,110 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 9250 transitions. [2022-01-19 07:03:17,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 9250 transitions. [2022-01-19 07:03:17,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:17,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 9250 transitions. [2022-01-19 07:03:17,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 159.48275862068965) internal successors, (9250), 58 states have internal predecessors, (9250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:17,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:17,126 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:17,126 INFO L186 Difference]: Start difference. First operand has 280 places, 239 transitions, 1102 flow. Second operand 58 states and 9250 transitions. [2022-01-19 07:03:17,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 531 transitions, 4332 flow [2022-01-19 07:03:17,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 531 transitions, 3980 flow, removed 175 selfloop flow, removed 11 redundant places. [2022-01-19 07:03:17,148 INFO L242 Difference]: Finished difference. Result has 366 places, 243 transitions, 1265 flow [2022-01-19 07:03:17,148 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=1265, PETRI_PLACES=366, PETRI_TRANSITIONS=243} [2022-01-19 07:03:17,149 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 179 predicate places. [2022-01-19 07:03:17,149 INFO L470 AbstractCegarLoop]: Abstraction has has 366 places, 243 transitions, 1265 flow [2022-01-19 07:03:17,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:17,149 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:17,149 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:17,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-19 07:03:17,149 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:17,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:17,150 INFO L85 PathProgramCache]: Analyzing trace with hash 256393280, now seen corresponding path program 4 times [2022-01-19 07:03:17,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:17,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465235269] [2022-01-19 07:03:17,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:17,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:17,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:17,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:17,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465235269] [2022-01-19 07:03:17,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465235269] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:17,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:17,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:03:17,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170559718] [2022-01-19 07:03:17,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:17,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:03:17,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:17,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:03:17,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:03:17,266 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:03:17,267 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 243 transitions, 1265 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:17,267 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:17,267 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:03:17,267 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:17,905 INFO L129 PetriNetUnfolder]: 583/1732 cut-off events. [2022-01-19 07:03:17,905 INFO L130 PetriNetUnfolder]: For 15135/15135 co-relation queries the response was YES. [2022-01-19 07:03:17,921 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8169 conditions, 1732 events. 583/1732 cut-off events. For 15135/15135 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 12341 event pairs, 202 based on Foata normal form. 1/1653 useless extension candidates. Maximal degree in co-relation 8057. Up to 548 conditions per place. [2022-01-19 07:03:17,926 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 181 selfloop transitions, 38 changer transitions 44/400 dead transitions. [2022-01-19 07:03:17,926 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 400 transitions, 3587 flow [2022-01-19 07:03:17,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 07:03:17,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 07:03:17,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4354 transitions. [2022-01-19 07:03:17,928 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7679012345679013 [2022-01-19 07:03:17,928 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4354 transitions. [2022-01-19 07:03:17,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4354 transitions. [2022-01-19 07:03:17,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:17,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4354 transitions. [2022-01-19 07:03:17,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 161.25925925925927) internal successors, (4354), 27 states have internal predecessors, (4354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:17,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:17,933 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:17,933 INFO L186 Difference]: Start difference. First operand has 366 places, 243 transitions, 1265 flow. Second operand 27 states and 4354 transitions. [2022-01-19 07:03:17,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 400 transitions, 3587 flow [2022-01-19 07:03:17,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 400 transitions, 3296 flow, removed 143 selfloop flow, removed 40 redundant places. [2022-01-19 07:03:17,968 INFO L242 Difference]: Finished difference. Result has 325 places, 267 transitions, 1629 flow [2022-01-19 07:03:17,968 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1159, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1629, PETRI_PLACES=325, PETRI_TRANSITIONS=267} [2022-01-19 07:03:17,969 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 138 predicate places. [2022-01-19 07:03:17,969 INFO L470 AbstractCegarLoop]: Abstraction has has 325 places, 267 transitions, 1629 flow [2022-01-19 07:03:17,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:17,969 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:17,969 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:17,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-19 07:03:17,969 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:17,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:17,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1779093400, now seen corresponding path program 1 times [2022-01-19 07:03:17,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:17,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947078560] [2022-01-19 07:03:17,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:17,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:17,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:17,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:17,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:17,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947078560] [2022-01-19 07:03:17,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947078560] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:17,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:17,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 07:03:17,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816938422] [2022-01-19 07:03:17,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:17,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 07:03:17,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:17,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 07:03:17,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 07:03:17,985 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-01-19 07:03:17,985 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 267 transitions, 1629 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:17,985 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:17,985 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-01-19 07:03:17,985 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:18,146 INFO L129 PetriNetUnfolder]: 258/1465 cut-off events. [2022-01-19 07:03:18,146 INFO L130 PetriNetUnfolder]: For 9685/9778 co-relation queries the response was YES. [2022-01-19 07:03:18,158 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5398 conditions, 1465 events. 258/1465 cut-off events. For 9685/9778 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 10711 event pairs, 107 based on Foata normal form. 6/1389 useless extension candidates. Maximal degree in co-relation 5305. Up to 118 conditions per place. [2022-01-19 07:03:18,162 INFO L132 encePairwiseOnDemand]: 204/210 looper letters, 15 selfloop transitions, 3 changer transitions 0/273 dead transitions. [2022-01-19 07:03:18,162 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 273 transitions, 1680 flow [2022-01-19 07:03:18,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 07:03:18,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 07:03:18,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-01-19 07:03:18,163 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-01-19 07:03:18,163 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-01-19 07:03:18,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-01-19 07:03:18,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:18,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-01-19 07:03:18,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:18,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:18,164 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:18,165 INFO L186 Difference]: Start difference. First operand has 325 places, 267 transitions, 1629 flow. Second operand 3 states and 591 transitions. [2022-01-19 07:03:18,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 273 transitions, 1680 flow [2022-01-19 07:03:18,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 273 transitions, 1545 flow, removed 57 selfloop flow, removed 17 redundant places. [2022-01-19 07:03:18,200 INFO L242 Difference]: Finished difference. Result has 300 places, 270 transitions, 1524 flow [2022-01-19 07:03:18,201 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1494, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1524, PETRI_PLACES=300, PETRI_TRANSITIONS=270} [2022-01-19 07:03:18,201 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 113 predicate places. [2022-01-19 07:03:18,201 INFO L470 AbstractCegarLoop]: Abstraction has has 300 places, 270 transitions, 1524 flow [2022-01-19 07:03:18,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:18,201 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:18,201 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:18,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-19 07:03:18,202 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:18,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:18,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1934595890, now seen corresponding path program 5 times [2022-01-19 07:03:18,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:18,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094920144] [2022-01-19 07:03:18,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:18,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:18,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:18,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:18,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:18,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094920144] [2022-01-19 07:03:18,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094920144] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:18,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:18,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:03:18,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028458190] [2022-01-19 07:03:18,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:18,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:03:18,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:18,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:03:18,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:03:18,331 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:03:18,332 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 270 transitions, 1524 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:18,332 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:18,332 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:03:18,332 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:19,488 INFO L129 PetriNetUnfolder]: 964/2916 cut-off events. [2022-01-19 07:03:19,489 INFO L130 PetriNetUnfolder]: For 19450/19450 co-relation queries the response was YES. [2022-01-19 07:03:19,510 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12742 conditions, 2916 events. 964/2916 cut-off events. For 19450/19450 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 22377 event pairs, 402 based on Foata normal form. 1/2797 useless extension candidates. Maximal degree in co-relation 12662. Up to 1086 conditions per place. [2022-01-19 07:03:19,517 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 207 selfloop transitions, 43 changer transitions 84/474 dead transitions. [2022-01-19 07:03:19,517 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 474 transitions, 4619 flow [2022-01-19 07:03:19,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-19 07:03:19,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-01-19 07:03:19,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 7971 transitions. [2022-01-19 07:03:19,521 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7591428571428571 [2022-01-19 07:03:19,521 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 7971 transitions. [2022-01-19 07:03:19,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 7971 transitions. [2022-01-19 07:03:19,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:19,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 7971 transitions. [2022-01-19 07:03:19,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 159.42) internal successors, (7971), 50 states have internal predecessors, (7971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:19,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:19,531 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:19,531 INFO L186 Difference]: Start difference. First operand has 300 places, 270 transitions, 1524 flow. Second operand 50 states and 7971 transitions. [2022-01-19 07:03:19,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 474 transitions, 4619 flow [2022-01-19 07:03:19,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 474 transitions, 4616 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 07:03:19,578 INFO L242 Difference]: Finished difference. Result has 395 places, 289 transitions, 2040 flow [2022-01-19 07:03:19,578 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1521, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=2040, PETRI_PLACES=395, PETRI_TRANSITIONS=289} [2022-01-19 07:03:19,579 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 208 predicate places. [2022-01-19 07:03:19,579 INFO L470 AbstractCegarLoop]: Abstraction has has 395 places, 289 transitions, 2040 flow [2022-01-19 07:03:19,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:19,579 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:19,579 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:19,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-19 07:03:19,579 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:19,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:19,580 INFO L85 PathProgramCache]: Analyzing trace with hash 268855270, now seen corresponding path program 1 times [2022-01-19 07:03:19,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:19,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126075143] [2022-01-19 07:03:19,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:19,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:19,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:19,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:19,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126075143] [2022-01-19 07:03:19,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126075143] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:19,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:19,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 07:03:19,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677723645] [2022-01-19 07:03:19,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:19,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 07:03:19,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:19,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 07:03:19,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 07:03:19,594 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-01-19 07:03:19,594 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 289 transitions, 2040 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:19,594 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:19,594 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-01-19 07:03:19,594 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:19,779 INFO L129 PetriNetUnfolder]: 254/1361 cut-off events. [2022-01-19 07:03:19,780 INFO L130 PetriNetUnfolder]: For 17416/17554 co-relation queries the response was YES. [2022-01-19 07:03:19,794 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6245 conditions, 1361 events. 254/1361 cut-off events. For 17416/17554 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9284 event pairs, 100 based on Foata normal form. 9/1307 useless extension candidates. Maximal degree in co-relation 6118. Up to 106 conditions per place. [2022-01-19 07:03:19,797 INFO L132 encePairwiseOnDemand]: 202/210 looper letters, 16 selfloop transitions, 5 changer transitions 0/295 dead transitions. [2022-01-19 07:03:19,797 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 295 transitions, 2103 flow [2022-01-19 07:03:19,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 07:03:19,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 07:03:19,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-01-19 07:03:19,798 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-01-19 07:03:19,798 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-01-19 07:03:19,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-01-19 07:03:19,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:19,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-01-19 07:03:19,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:19,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:19,799 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:19,799 INFO L186 Difference]: Start difference. First operand has 395 places, 289 transitions, 2040 flow. Second operand 3 states and 591 transitions. [2022-01-19 07:03:19,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 295 transitions, 2103 flow [2022-01-19 07:03:19,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 295 transitions, 1990 flow, removed 50 selfloop flow, removed 24 redundant places. [2022-01-19 07:03:19,848 INFO L242 Difference]: Finished difference. Result has 337 places, 292 transitions, 1971 flow [2022-01-19 07:03:19,848 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1927, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1971, PETRI_PLACES=337, PETRI_TRANSITIONS=292} [2022-01-19 07:03:19,848 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 150 predicate places. [2022-01-19 07:03:19,849 INFO L470 AbstractCegarLoop]: Abstraction has has 337 places, 292 transitions, 1971 flow [2022-01-19 07:03:19,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:19,849 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:19,849 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:19,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-19 07:03:19,849 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:19,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:19,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1698434106, now seen corresponding path program 6 times [2022-01-19 07:03:19,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:19,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060067978] [2022-01-19 07:03:19,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:19,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:19,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:19,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:19,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060067978] [2022-01-19 07:03:19,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060067978] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:19,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:19,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:03:19,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041708732] [2022-01-19 07:03:19,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:19,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:03:19,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:19,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:03:19,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:03:19,970 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:03:19,971 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 292 transitions, 1971 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:19,971 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:19,971 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:03:19,971 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:21,203 INFO L129 PetriNetUnfolder]: 787/2591 cut-off events. [2022-01-19 07:03:21,204 INFO L130 PetriNetUnfolder]: For 30444/30466 co-relation queries the response was YES. [2022-01-19 07:03:21,224 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13366 conditions, 2591 events. 787/2591 cut-off events. For 30444/30466 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 19430 event pairs, 367 based on Foata normal form. 4/2507 useless extension candidates. Maximal degree in co-relation 13261. Up to 841 conditions per place. [2022-01-19 07:03:21,231 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 217 selfloop transitions, 40 changer transitions 84/484 dead transitions. [2022-01-19 07:03:21,231 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 484 transitions, 5777 flow [2022-01-19 07:03:21,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-19 07:03:21,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-01-19 07:03:21,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 8287 transitions. [2022-01-19 07:03:21,234 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7588827838827839 [2022-01-19 07:03:21,234 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 8287 transitions. [2022-01-19 07:03:21,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 8287 transitions. [2022-01-19 07:03:21,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:21,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 8287 transitions. [2022-01-19 07:03:21,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 159.3653846153846) internal successors, (8287), 52 states have internal predecessors, (8287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:21,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 210.0) internal successors, (11130), 53 states have internal predecessors, (11130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:21,245 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 210.0) internal successors, (11130), 53 states have internal predecessors, (11130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:21,245 INFO L186 Difference]: Start difference. First operand has 337 places, 292 transitions, 1971 flow. Second operand 52 states and 8287 transitions. [2022-01-19 07:03:21,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 484 transitions, 5777 flow [2022-01-19 07:03:21,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 484 transitions, 5761 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-01-19 07:03:21,307 INFO L242 Difference]: Finished difference. Result has 430 places, 312 transitions, 2485 flow [2022-01-19 07:03:21,308 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1955, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=2485, PETRI_PLACES=430, PETRI_TRANSITIONS=312} [2022-01-19 07:03:21,308 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 243 predicate places. [2022-01-19 07:03:21,308 INFO L470 AbstractCegarLoop]: Abstraction has has 430 places, 312 transitions, 2485 flow [2022-01-19 07:03:21,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:21,308 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:21,308 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:21,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-19 07:03:21,308 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:21,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:21,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1987803174, now seen corresponding path program 7 times [2022-01-19 07:03:21,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:21,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450521679] [2022-01-19 07:03:21,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:21,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:21,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:21,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:21,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450521679] [2022-01-19 07:03:21,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450521679] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:21,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:21,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:03:21,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138847947] [2022-01-19 07:03:21,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:21,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:03:21,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:21,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:03:21,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:03:21,417 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:03:21,417 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 312 transitions, 2485 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:21,418 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:21,418 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:03:21,418 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:22,564 INFO L129 PetriNetUnfolder]: 798/2638 cut-off events. [2022-01-19 07:03:22,565 INFO L130 PetriNetUnfolder]: For 59883/59905 co-relation queries the response was YES. [2022-01-19 07:03:22,599 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16409 conditions, 2638 events. 798/2638 cut-off events. For 59883/59905 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 19934 event pairs, 424 based on Foata normal form. 1/2538 useless extension candidates. Maximal degree in co-relation 16260. Up to 871 conditions per place. [2022-01-19 07:03:22,607 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 225 selfloop transitions, 42 changer transitions 84/494 dead transitions. [2022-01-19 07:03:22,608 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 494 transitions, 7503 flow [2022-01-19 07:03:22,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-19 07:03:22,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-01-19 07:03:22,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 8132 transitions. [2022-01-19 07:03:22,666 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7592903828197946 [2022-01-19 07:03:22,666 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 8132 transitions. [2022-01-19 07:03:22,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 8132 transitions. [2022-01-19 07:03:22,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:22,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 8132 transitions. [2022-01-19 07:03:22,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 159.45098039215685) internal successors, (8132), 51 states have internal predecessors, (8132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:22,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 210.0) internal successors, (10920), 52 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:22,676 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 210.0) internal successors, (10920), 52 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:22,676 INFO L186 Difference]: Start difference. First operand has 430 places, 312 transitions, 2485 flow. Second operand 51 states and 8132 transitions. [2022-01-19 07:03:22,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 494 transitions, 7503 flow [2022-01-19 07:03:22,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 494 transitions, 6335 flow, removed 584 selfloop flow, removed 35 redundant places. [2022-01-19 07:03:22,788 INFO L242 Difference]: Finished difference. Result has 452 places, 330 transitions, 2951 flow [2022-01-19 07:03:22,788 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2353, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=2951, PETRI_PLACES=452, PETRI_TRANSITIONS=330} [2022-01-19 07:03:22,789 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 265 predicate places. [2022-01-19 07:03:22,789 INFO L470 AbstractCegarLoop]: Abstraction has has 452 places, 330 transitions, 2951 flow [2022-01-19 07:03:22,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:22,789 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:22,789 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:22,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-19 07:03:22,789 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:22,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:22,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1981189114, now seen corresponding path program 8 times [2022-01-19 07:03:22,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:22,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899026593] [2022-01-19 07:03:22,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:22,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:22,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:22,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:22,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899026593] [2022-01-19 07:03:22,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899026593] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:22,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:22,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:03:22,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716608476] [2022-01-19 07:03:22,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:22,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:03:22,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:22,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:03:22,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:03:22,911 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:03:22,912 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 330 transitions, 2951 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:22,912 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:22,912 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:03:22,912 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:24,017 INFO L129 PetriNetUnfolder]: 789/2620 cut-off events. [2022-01-19 07:03:24,017 INFO L130 PetriNetUnfolder]: For 62265/62287 co-relation queries the response was YES. [2022-01-19 07:03:24,052 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16651 conditions, 2620 events. 789/2620 cut-off events. For 62265/62287 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 19913 event pairs, 391 based on Foata normal form. 1/2518 useless extension candidates. Maximal degree in co-relation 16489. Up to 900 conditions per place. [2022-01-19 07:03:24,060 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 274 selfloop transitions, 74 changer transitions 87/578 dead transitions. [2022-01-19 07:03:24,060 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 578 transitions, 9606 flow [2022-01-19 07:03:24,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-19 07:03:24,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-01-19 07:03:24,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 7962 transitions. [2022-01-19 07:03:24,064 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7582857142857143 [2022-01-19 07:03:24,064 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 7962 transitions. [2022-01-19 07:03:24,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 7962 transitions. [2022-01-19 07:03:24,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:24,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 7962 transitions. [2022-01-19 07:03:24,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 159.24) internal successors, (7962), 50 states have internal predecessors, (7962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:24,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:24,074 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:24,074 INFO L186 Difference]: Start difference. First operand has 452 places, 330 transitions, 2951 flow. Second operand 50 states and 7962 transitions. [2022-01-19 07:03:24,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 578 transitions, 9606 flow [2022-01-19 07:03:24,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 578 transitions, 8511 flow, removed 532 selfloop flow, removed 38 redundant places. [2022-01-19 07:03:24,246 INFO L242 Difference]: Finished difference. Result has 469 places, 360 transitions, 3861 flow [2022-01-19 07:03:24,246 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2757, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=3861, PETRI_PLACES=469, PETRI_TRANSITIONS=360} [2022-01-19 07:03:24,246 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 282 predicate places. [2022-01-19 07:03:24,246 INFO L470 AbstractCegarLoop]: Abstraction has has 469 places, 360 transitions, 3861 flow [2022-01-19 07:03:24,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:24,247 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:24,247 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:24,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-19 07:03:24,247 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:24,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:24,247 INFO L85 PathProgramCache]: Analyzing trace with hash 254084890, now seen corresponding path program 9 times [2022-01-19 07:03:24,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:24,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844702245] [2022-01-19 07:03:24,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:24,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:24,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:24,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:24,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:24,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844702245] [2022-01-19 07:03:24,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844702245] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:24,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:24,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:03:24,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451791158] [2022-01-19 07:03:24,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:24,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:03:24,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:24,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:03:24,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:03:24,364 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:03:24,365 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 360 transitions, 3861 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:24,365 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:24,365 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:03:24,365 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:25,761 INFO L129 PetriNetUnfolder]: 840/2761 cut-off events. [2022-01-19 07:03:25,761 INFO L130 PetriNetUnfolder]: For 58838/58868 co-relation queries the response was YES. [2022-01-19 07:03:25,801 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17523 conditions, 2761 events. 840/2761 cut-off events. For 58838/58868 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 21386 event pairs, 331 based on Foata normal form. 13/2679 useless extension candidates. Maximal degree in co-relation 17353. Up to 898 conditions per place. [2022-01-19 07:03:25,810 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 270 selfloop transitions, 100 changer transitions 86/599 dead transitions. [2022-01-19 07:03:25,810 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 599 transitions, 9427 flow [2022-01-19 07:03:25,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-19 07:03:25,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-01-19 07:03:25,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 8596 transitions. [2022-01-19 07:03:25,814 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7580246913580246 [2022-01-19 07:03:25,814 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 8596 transitions. [2022-01-19 07:03:25,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 8596 transitions. [2022-01-19 07:03:25,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:25,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 8596 transitions. [2022-01-19 07:03:25,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 159.1851851851852) internal successors, (8596), 54 states have internal predecessors, (8596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:25,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 210.0) internal successors, (11550), 55 states have internal predecessors, (11550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:25,825 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 210.0) internal successors, (11550), 55 states have internal predecessors, (11550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:25,825 INFO L186 Difference]: Start difference. First operand has 469 places, 360 transitions, 3861 flow. Second operand 54 states and 8596 transitions. [2022-01-19 07:03:25,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 599 transitions, 9427 flow [2022-01-19 07:03:26,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 599 transitions, 8355 flow, removed 486 selfloop flow, removed 33 redundant places. [2022-01-19 07:03:26,018 INFO L242 Difference]: Finished difference. Result has 494 places, 383 transitions, 4122 flow [2022-01-19 07:03:26,018 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3365, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=4122, PETRI_PLACES=494, PETRI_TRANSITIONS=383} [2022-01-19 07:03:26,018 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 307 predicate places. [2022-01-19 07:03:26,018 INFO L470 AbstractCegarLoop]: Abstraction has has 494 places, 383 transitions, 4122 flow [2022-01-19 07:03:26,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:26,019 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:26,019 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:26,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-19 07:03:26,019 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:26,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:26,019 INFO L85 PathProgramCache]: Analyzing trace with hash -38496598, now seen corresponding path program 10 times [2022-01-19 07:03:26,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:26,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498015089] [2022-01-19 07:03:26,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:26,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:26,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:26,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:26,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498015089] [2022-01-19 07:03:26,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498015089] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:26,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:26,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:03:26,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772862629] [2022-01-19 07:03:26,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:26,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:03:26,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:26,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:03:26,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:03:26,130 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:03:26,131 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 383 transitions, 4122 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:26,131 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:26,131 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:03:26,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:27,558 INFO L129 PetriNetUnfolder]: 835/2749 cut-off events. [2022-01-19 07:03:27,558 INFO L130 PetriNetUnfolder]: For 55420/55459 co-relation queries the response was YES. [2022-01-19 07:03:27,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17415 conditions, 2749 events. 835/2749 cut-off events. For 55420/55459 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 21226 event pairs, 352 based on Foata normal form. 13/2662 useless extension candidates. Maximal degree in co-relation 17233. Up to 890 conditions per place. [2022-01-19 07:03:27,606 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 252 selfloop transitions, 94 changer transitions 87/576 dead transitions. [2022-01-19 07:03:27,607 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 576 transitions, 8826 flow [2022-01-19 07:03:27,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-19 07:03:27,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-01-19 07:03:27,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 8442 transitions. [2022-01-19 07:03:27,610 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7584905660377359 [2022-01-19 07:03:27,610 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 8442 transitions. [2022-01-19 07:03:27,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 8442 transitions. [2022-01-19 07:03:27,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:27,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 8442 transitions. [2022-01-19 07:03:27,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 159.28301886792454) internal successors, (8442), 53 states have internal predecessors, (8442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:27,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 210.0) internal successors, (11340), 54 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:27,621 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 210.0) internal successors, (11340), 54 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:27,621 INFO L186 Difference]: Start difference. First operand has 494 places, 383 transitions, 4122 flow. Second operand 53 states and 8442 transitions. [2022-01-19 07:03:27,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 576 transitions, 8826 flow [2022-01-19 07:03:27,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 576 transitions, 8197 flow, removed 293 selfloop flow, removed 43 redundant places. [2022-01-19 07:03:27,794 INFO L242 Difference]: Finished difference. Result has 504 places, 390 transitions, 4463 flow [2022-01-19 07:03:27,794 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3951, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=4463, PETRI_PLACES=504, PETRI_TRANSITIONS=390} [2022-01-19 07:03:27,794 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 317 predicate places. [2022-01-19 07:03:27,794 INFO L470 AbstractCegarLoop]: Abstraction has has 504 places, 390 transitions, 4463 flow [2022-01-19 07:03:27,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:27,795 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:27,795 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:27,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-19 07:03:27,795 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:27,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:27,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1573113274, now seen corresponding path program 11 times [2022-01-19 07:03:27,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:27,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553538049] [2022-01-19 07:03:27,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:27,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:27,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:27,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:27,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:27,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553538049] [2022-01-19 07:03:27,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553538049] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:27,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:27,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:03:27,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883284927] [2022-01-19 07:03:27,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:27,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:03:27,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:27,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:03:27,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:03:27,902 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:03:27,903 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 390 transitions, 4463 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:27,903 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:27,903 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:03:27,903 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:29,102 INFO L129 PetriNetUnfolder]: 818/2661 cut-off events. [2022-01-19 07:03:29,102 INFO L130 PetriNetUnfolder]: For 54849/54891 co-relation queries the response was YES. [2022-01-19 07:03:29,138 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17117 conditions, 2661 events. 818/2661 cut-off events. For 54849/54891 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 20252 event pairs, 349 based on Foata normal form. 13/2570 useless extension candidates. Maximal degree in co-relation 16934. Up to 920 conditions per place. [2022-01-19 07:03:29,150 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 239 selfloop transitions, 101 changer transitions 65/548 dead transitions. [2022-01-19 07:03:29,151 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 548 transitions, 8380 flow [2022-01-19 07:03:29,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-19 07:03:29,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-01-19 07:03:29,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5442 transitions. [2022-01-19 07:03:29,154 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7621848739495798 [2022-01-19 07:03:29,154 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5442 transitions. [2022-01-19 07:03:29,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5442 transitions. [2022-01-19 07:03:29,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:29,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5442 transitions. [2022-01-19 07:03:29,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 160.05882352941177) internal successors, (5442), 34 states have internal predecessors, (5442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:29,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:29,163 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:29,163 INFO L186 Difference]: Start difference. First operand has 504 places, 390 transitions, 4463 flow. Second operand 34 states and 5442 transitions. [2022-01-19 07:03:29,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 548 transitions, 8380 flow [2022-01-19 07:03:29,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 548 transitions, 7727 flow, removed 280 selfloop flow, removed 39 redundant places. [2022-01-19 07:03:29,376 INFO L242 Difference]: Finished difference. Result has 476 places, 398 transitions, 4664 flow [2022-01-19 07:03:29,376 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4231, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=4664, PETRI_PLACES=476, PETRI_TRANSITIONS=398} [2022-01-19 07:03:29,377 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 289 predicate places. [2022-01-19 07:03:29,377 INFO L470 AbstractCegarLoop]: Abstraction has has 476 places, 398 transitions, 4664 flow [2022-01-19 07:03:29,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:29,377 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:29,377 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:29,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-01-19 07:03:29,377 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:29,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:29,378 INFO L85 PathProgramCache]: Analyzing trace with hash -2080920916, now seen corresponding path program 12 times [2022-01-19 07:03:29,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:29,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362919539] [2022-01-19 07:03:29,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:29,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:29,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:29,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:29,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362919539] [2022-01-19 07:03:29,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362919539] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:29,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:29,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:03:29,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013441373] [2022-01-19 07:03:29,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:29,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:03:29,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:29,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:03:29,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:03:29,506 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:03:29,507 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 398 transitions, 4664 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:29,507 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:29,507 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:03:29,507 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:30,660 INFO L129 PetriNetUnfolder]: 816/2636 cut-off events. [2022-01-19 07:03:30,661 INFO L130 PetriNetUnfolder]: For 49346/49379 co-relation queries the response was YES. [2022-01-19 07:03:30,694 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16751 conditions, 2636 events. 816/2636 cut-off events. For 49346/49379 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 20184 event pairs, 360 based on Foata normal form. 9/2539 useless extension candidates. Maximal degree in co-relation 16586. Up to 920 conditions per place. [2022-01-19 07:03:30,703 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 263 selfloop transitions, 110 changer transitions 78/594 dead transitions. [2022-01-19 07:03:30,703 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 594 transitions, 9738 flow [2022-01-19 07:03:30,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-19 07:03:30,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-01-19 07:03:30,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 6702 transitions. [2022-01-19 07:03:30,708 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7598639455782313 [2022-01-19 07:03:30,708 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 6702 transitions. [2022-01-19 07:03:30,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 6702 transitions. [2022-01-19 07:03:30,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:30,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 6702 transitions. [2022-01-19 07:03:30,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 159.57142857142858) internal successors, (6702), 42 states have internal predecessors, (6702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:30,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 210.0) internal successors, (9030), 43 states have internal predecessors, (9030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:30,716 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 210.0) internal successors, (9030), 43 states have internal predecessors, (9030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:30,716 INFO L186 Difference]: Start difference. First operand has 476 places, 398 transitions, 4664 flow. Second operand 42 states and 6702 transitions. [2022-01-19 07:03:30,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 594 transitions, 9738 flow [2022-01-19 07:03:30,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 594 transitions, 9249 flow, removed 101 selfloop flow, removed 25 redundant places. [2022-01-19 07:03:30,895 INFO L242 Difference]: Finished difference. Result has 507 places, 425 transitions, 5523 flow [2022-01-19 07:03:30,896 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4380, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=5523, PETRI_PLACES=507, PETRI_TRANSITIONS=425} [2022-01-19 07:03:30,896 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 320 predicate places. [2022-01-19 07:03:30,896 INFO L470 AbstractCegarLoop]: Abstraction has has 507 places, 425 transitions, 5523 flow [2022-01-19 07:03:30,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:30,896 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:30,896 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:30,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-01-19 07:03:30,897 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:30,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:30,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1464945574, now seen corresponding path program 13 times [2022-01-19 07:03:30,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:30,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554456532] [2022-01-19 07:03:30,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:30,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:31,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:31,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:31,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554456532] [2022-01-19 07:03:31,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554456532] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:31,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:31,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:03:31,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067977119] [2022-01-19 07:03:31,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:31,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:03:31,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:31,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:03:31,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:03:31,014 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:03:31,015 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 425 transitions, 5523 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:31,015 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:31,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:03:31,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:32,405 INFO L129 PetriNetUnfolder]: 811/2813 cut-off events. [2022-01-19 07:03:32,405 INFO L130 PetriNetUnfolder]: For 54173/54203 co-relation queries the response was YES. [2022-01-19 07:03:32,443 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17423 conditions, 2813 events. 811/2813 cut-off events. For 54173/54203 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 21827 event pairs, 274 based on Foata normal form. 1/2736 useless extension candidates. Maximal degree in co-relation 17242. Up to 706 conditions per place. [2022-01-19 07:03:32,460 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 437 selfloop transitions, 108 changer transitions 108/794 dead transitions. [2022-01-19 07:03:32,460 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 794 transitions, 13148 flow [2022-01-19 07:03:32,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-19 07:03:32,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-01-19 07:03:32,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 9236 transitions. [2022-01-19 07:03:32,463 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7582922824302135 [2022-01-19 07:03:32,463 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 9236 transitions. [2022-01-19 07:03:32,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 9236 transitions. [2022-01-19 07:03:32,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:32,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 9236 transitions. [2022-01-19 07:03:32,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 159.24137931034483) internal successors, (9236), 58 states have internal predecessors, (9236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:32,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:32,475 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:32,475 INFO L186 Difference]: Start difference. First operand has 507 places, 425 transitions, 5523 flow. Second operand 58 states and 9236 transitions. [2022-01-19 07:03:32,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 794 transitions, 13148 flow [2022-01-19 07:03:32,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 794 transitions, 12239 flow, removed 295 selfloop flow, removed 29 redundant places. [2022-01-19 07:03:32,710 INFO L242 Difference]: Finished difference. Result has 555 places, 425 transitions, 5484 flow [2022-01-19 07:03:32,710 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4954, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=5484, PETRI_PLACES=555, PETRI_TRANSITIONS=425} [2022-01-19 07:03:32,710 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 368 predicate places. [2022-01-19 07:03:32,710 INFO L470 AbstractCegarLoop]: Abstraction has has 555 places, 425 transitions, 5484 flow [2022-01-19 07:03:32,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:32,711 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:32,711 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:32,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-01-19 07:03:32,711 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:32,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:32,711 INFO L85 PathProgramCache]: Analyzing trace with hash 2053203194, now seen corresponding path program 14 times [2022-01-19 07:03:32,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:32,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49749693] [2022-01-19 07:03:32,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:32,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:32,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:32,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:32,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:32,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49749693] [2022-01-19 07:03:32,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49749693] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:32,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:32,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:03:32,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244759331] [2022-01-19 07:03:32,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:32,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:03:32,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:32,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:03:32,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:03:32,825 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:03:32,826 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 425 transitions, 5484 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:32,826 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:32,826 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:03:32,826 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:34,143 INFO L129 PetriNetUnfolder]: 803/2774 cut-off events. [2022-01-19 07:03:34,143 INFO L130 PetriNetUnfolder]: For 57037/57067 co-relation queries the response was YES. [2022-01-19 07:03:34,183 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18037 conditions, 2774 events. 803/2774 cut-off events. For 57037/57067 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 21413 event pairs, 341 based on Foata normal form. 13/2695 useless extension candidates. Maximal degree in co-relation 17833. Up to 936 conditions per place. [2022-01-19 07:03:34,192 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 303 selfloop transitions, 128 changer transitions 80/652 dead transitions. [2022-01-19 07:03:34,192 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 652 transitions, 11076 flow [2022-01-19 07:03:34,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 07:03:34,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 07:03:34,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7334 transitions. [2022-01-19 07:03:34,195 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7592132505175984 [2022-01-19 07:03:34,195 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7334 transitions. [2022-01-19 07:03:34,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7334 transitions. [2022-01-19 07:03:34,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:34,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7334 transitions. [2022-01-19 07:03:34,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.43478260869566) internal successors, (7334), 46 states have internal predecessors, (7334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:34,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:34,204 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:34,204 INFO L186 Difference]: Start difference. First operand has 555 places, 425 transitions, 5484 flow. Second operand 46 states and 7334 transitions. [2022-01-19 07:03:34,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 652 transitions, 11076 flow [2022-01-19 07:03:34,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 652 transitions, 10613 flow, removed 76 selfloop flow, removed 51 redundant places. [2022-01-19 07:03:34,436 INFO L242 Difference]: Finished difference. Result has 533 places, 432 transitions, 5805 flow [2022-01-19 07:03:34,437 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5264, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=5805, PETRI_PLACES=533, PETRI_TRANSITIONS=432} [2022-01-19 07:03:34,437 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 346 predicate places. [2022-01-19 07:03:34,437 INFO L470 AbstractCegarLoop]: Abstraction has has 533 places, 432 transitions, 5805 flow [2022-01-19 07:03:34,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:34,437 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:34,437 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:34,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-01-19 07:03:34,438 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:34,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:34,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1175875342, now seen corresponding path program 15 times [2022-01-19 07:03:34,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:34,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567640465] [2022-01-19 07:03:34,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:34,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:34,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:34,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:34,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567640465] [2022-01-19 07:03:34,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567640465] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:34,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:34,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:03:34,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514604729] [2022-01-19 07:03:34,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:34,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:03:34,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:34,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:03:34,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:03:34,543 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:03:34,544 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 432 transitions, 5805 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:34,544 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:34,544 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:03:34,544 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:35,557 INFO L129 PetriNetUnfolder]: 799/2722 cut-off events. [2022-01-19 07:03:35,557 INFO L130 PetriNetUnfolder]: For 57567/57597 co-relation queries the response was YES. [2022-01-19 07:03:35,665 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18013 conditions, 2722 events. 799/2722 cut-off events. For 57567/57597 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 20765 event pairs, 346 based on Foata normal form. 13/2640 useless extension candidates. Maximal degree in co-relation 17823. Up to 956 conditions per place. [2022-01-19 07:03:35,677 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 287 selfloop transitions, 138 changer transitions 59/625 dead transitions. [2022-01-19 07:03:35,677 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 625 transitions, 10713 flow [2022-01-19 07:03:35,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:03:35,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:03:35,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4811 transitions. [2022-01-19 07:03:35,680 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7636507936507937 [2022-01-19 07:03:35,680 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4811 transitions. [2022-01-19 07:03:35,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4811 transitions. [2022-01-19 07:03:35,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:35,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4811 transitions. [2022-01-19 07:03:35,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.36666666666667) internal successors, (4811), 30 states have internal predecessors, (4811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:35,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:35,688 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:35,688 INFO L186 Difference]: Start difference. First operand has 533 places, 432 transitions, 5805 flow. Second operand 30 states and 4811 transitions. [2022-01-19 07:03:35,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 625 transitions, 10713 flow [2022-01-19 07:03:35,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 625 transitions, 10281 flow, removed 166 selfloop flow, removed 30 redundant places. [2022-01-19 07:03:35,913 INFO L242 Difference]: Finished difference. Result has 514 places, 449 transitions, 6384 flow [2022-01-19 07:03:35,913 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5628, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=6384, PETRI_PLACES=514, PETRI_TRANSITIONS=449} [2022-01-19 07:03:35,913 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 327 predicate places. [2022-01-19 07:03:35,913 INFO L470 AbstractCegarLoop]: Abstraction has has 514 places, 449 transitions, 6384 flow [2022-01-19 07:03:35,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:35,914 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:35,914 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:35,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-01-19 07:03:35,914 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:35,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:35,914 INFO L85 PathProgramCache]: Analyzing trace with hash -200612388, now seen corresponding path program 16 times [2022-01-19 07:03:35,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:35,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430218598] [2022-01-19 07:03:35,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:35,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:36,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:36,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:36,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430218598] [2022-01-19 07:03:36,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430218598] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:36,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:36,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:03:36,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732820294] [2022-01-19 07:03:36,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:36,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:03:36,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:36,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:03:36,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:03:36,023 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:03:36,024 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 449 transitions, 6384 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:36,024 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:36,024 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:03:36,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:37,116 INFO L129 PetriNetUnfolder]: 786/2795 cut-off events. [2022-01-19 07:03:37,117 INFO L130 PetriNetUnfolder]: For 57686/57723 co-relation queries the response was YES. [2022-01-19 07:03:37,153 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17847 conditions, 2795 events. 786/2795 cut-off events. For 57686/57723 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 21651 event pairs, 343 based on Foata normal form. 17/2720 useless extension candidates. Maximal degree in co-relation 17670. Up to 940 conditions per place. [2022-01-19 07:03:37,162 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 291 selfloop transitions, 127 changer transitions 70/629 dead transitions. [2022-01-19 07:03:37,162 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 629 transitions, 10852 flow [2022-01-19 07:03:37,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:03:37,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:03:37,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6067 transitions. [2022-01-19 07:03:37,165 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7602756892230577 [2022-01-19 07:03:37,165 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6067 transitions. [2022-01-19 07:03:37,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6067 transitions. [2022-01-19 07:03:37,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:37,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6067 transitions. [2022-01-19 07:03:37,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.6578947368421) internal successors, (6067), 38 states have internal predecessors, (6067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:37,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:37,172 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:37,172 INFO L186 Difference]: Start difference. First operand has 514 places, 449 transitions, 6384 flow. Second operand 38 states and 6067 transitions. [2022-01-19 07:03:37,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 629 transitions, 10852 flow [2022-01-19 07:03:37,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 629 transitions, 10594 flow, removed 99 selfloop flow, removed 11 redundant places. [2022-01-19 07:03:37,403 INFO L242 Difference]: Finished difference. Result has 548 places, 444 transitions, 6472 flow [2022-01-19 07:03:37,404 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6227, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=6472, PETRI_PLACES=548, PETRI_TRANSITIONS=444} [2022-01-19 07:03:37,404 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 361 predicate places. [2022-01-19 07:03:37,404 INFO L470 AbstractCegarLoop]: Abstraction has has 548 places, 444 transitions, 6472 flow [2022-01-19 07:03:37,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:37,404 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:37,405 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:37,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-01-19 07:03:37,405 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:37,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:37,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1043493350, now seen corresponding path program 17 times [2022-01-19 07:03:37,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:37,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651064811] [2022-01-19 07:03:37,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:37,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:37,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:37,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:37,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651064811] [2022-01-19 07:03:37,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651064811] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:37,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:37,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:03:37,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089489584] [2022-01-19 07:03:37,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:37,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:03:37,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:37,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:03:37,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:03:37,514 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:03:37,515 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 444 transitions, 6472 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:37,515 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:37,515 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:03:37,516 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:38,445 INFO L129 PetriNetUnfolder]: 750/2595 cut-off events. [2022-01-19 07:03:38,445 INFO L130 PetriNetUnfolder]: For 57894/57924 co-relation queries the response was YES. [2022-01-19 07:03:38,485 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17213 conditions, 2595 events. 750/2595 cut-off events. For 57894/57924 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 19476 event pairs, 338 based on Foata normal form. 13/2517 useless extension candidates. Maximal degree in co-relation 17022. Up to 930 conditions per place. [2022-01-19 07:03:38,493 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 272 selfloop transitions, 96 changer transitions 62/571 dead transitions. [2022-01-19 07:03:38,493 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 571 transitions, 9638 flow [2022-01-19 07:03:38,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-19 07:03:38,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-01-19 07:03:38,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4169 transitions. [2022-01-19 07:03:38,501 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7635531135531135 [2022-01-19 07:03:38,501 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4169 transitions. [2022-01-19 07:03:38,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4169 transitions. [2022-01-19 07:03:38,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:38,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4169 transitions. [2022-01-19 07:03:38,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 160.34615384615384) internal successors, (4169), 26 states have internal predecessors, (4169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:38,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:38,507 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:38,507 INFO L186 Difference]: Start difference. First operand has 548 places, 444 transitions, 6472 flow. Second operand 26 states and 4169 transitions. [2022-01-19 07:03:38,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 571 transitions, 9638 flow [2022-01-19 07:03:38,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 571 transitions, 9370 flow, removed 89 selfloop flow, removed 24 redundant places. [2022-01-19 07:03:38,748 INFO L242 Difference]: Finished difference. Result has 530 places, 396 transitions, 5372 flow [2022-01-19 07:03:38,748 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6276, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=5372, PETRI_PLACES=530, PETRI_TRANSITIONS=396} [2022-01-19 07:03:38,748 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 343 predicate places. [2022-01-19 07:03:38,748 INFO L470 AbstractCegarLoop]: Abstraction has has 530 places, 396 transitions, 5372 flow [2022-01-19 07:03:38,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:38,749 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:38,749 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:38,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-19 07:03:38,749 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:38,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:38,749 INFO L85 PathProgramCache]: Analyzing trace with hash -602702176, now seen corresponding path program 18 times [2022-01-19 07:03:38,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:38,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561147186] [2022-01-19 07:03:38,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:38,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:38,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:38,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:38,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:38,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561147186] [2022-01-19 07:03:38,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561147186] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:38,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:38,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:03:38,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914437052] [2022-01-19 07:03:38,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:38,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:03:38,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:38,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:03:38,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:03:38,863 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:03:38,864 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 396 transitions, 5372 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:38,864 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:38,864 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:03:38,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:40,016 INFO L129 PetriNetUnfolder]: 779/2772 cut-off events. [2022-01-19 07:03:40,016 INFO L130 PetriNetUnfolder]: For 63636/63664 co-relation queries the response was YES. [2022-01-19 07:03:40,045 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18192 conditions, 2772 events. 779/2772 cut-off events. For 63636/63664 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 21310 event pairs, 361 based on Foata normal form. 11/2685 useless extension candidates. Maximal degree in co-relation 18016. Up to 928 conditions per place. [2022-01-19 07:03:40,054 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 254 selfloop transitions, 111 changer transitions 68/574 dead transitions. [2022-01-19 07:03:40,055 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 574 transitions, 9980 flow [2022-01-19 07:03:40,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 07:03:40,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 07:03:40,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5918 transitions. [2022-01-19 07:03:40,057 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616473616473617 [2022-01-19 07:03:40,058 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5918 transitions. [2022-01-19 07:03:40,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5918 transitions. [2022-01-19 07:03:40,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:40,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5918 transitions. [2022-01-19 07:03:40,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 159.94594594594594) internal successors, (5918), 37 states have internal predecessors, (5918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:40,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:40,066 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:40,066 INFO L186 Difference]: Start difference. First operand has 530 places, 396 transitions, 5372 flow. Second operand 37 states and 5918 transitions. [2022-01-19 07:03:40,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 574 transitions, 9980 flow [2022-01-19 07:03:40,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 574 transitions, 8876 flow, removed 65 selfloop flow, removed 35 redundant places. [2022-01-19 07:03:40,273 INFO L242 Difference]: Finished difference. Result has 508 places, 415 transitions, 5380 flow [2022-01-19 07:03:40,274 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4638, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=5380, PETRI_PLACES=508, PETRI_TRANSITIONS=415} [2022-01-19 07:03:40,274 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 321 predicate places. [2022-01-19 07:03:40,274 INFO L470 AbstractCegarLoop]: Abstraction has has 508 places, 415 transitions, 5380 flow [2022-01-19 07:03:40,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:40,275 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:40,275 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:40,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-19 07:03:40,275 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:40,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:40,275 INFO L85 PathProgramCache]: Analyzing trace with hash 297519288, now seen corresponding path program 19 times [2022-01-19 07:03:40,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:40,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647378563] [2022-01-19 07:03:40,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:40,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:40,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:40,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:40,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647378563] [2022-01-19 07:03:40,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647378563] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:40,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:40,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:03:40,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508441407] [2022-01-19 07:03:40,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:40,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:03:40,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:40,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:03:40,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:03:40,392 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:03:40,393 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 415 transitions, 5380 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:40,393 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:40,393 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:03:40,393 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:41,578 INFO L129 PetriNetUnfolder]: 819/2902 cut-off events. [2022-01-19 07:03:41,578 INFO L130 PetriNetUnfolder]: For 61114/61142 co-relation queries the response was YES. [2022-01-19 07:03:41,616 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18501 conditions, 2902 events. 819/2902 cut-off events. For 61114/61142 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 22684 event pairs, 376 based on Foata normal form. 11/2815 useless extension candidates. Maximal degree in co-relation 18321. Up to 944 conditions per place. [2022-01-19 07:03:41,626 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 276 selfloop transitions, 124 changer transitions 79/620 dead transitions. [2022-01-19 07:03:41,626 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 620 transitions, 10595 flow [2022-01-19 07:03:41,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 07:03:41,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 07:03:41,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7340 transitions. [2022-01-19 07:03:41,629 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7598343685300207 [2022-01-19 07:03:41,629 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7340 transitions. [2022-01-19 07:03:41,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7340 transitions. [2022-01-19 07:03:41,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:41,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7340 transitions. [2022-01-19 07:03:41,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.56521739130434) internal successors, (7340), 46 states have internal predecessors, (7340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:41,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:41,639 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:41,639 INFO L186 Difference]: Start difference. First operand has 508 places, 415 transitions, 5380 flow. Second operand 46 states and 7340 transitions. [2022-01-19 07:03:41,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 620 transitions, 10595 flow [2022-01-19 07:03:41,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 620 transitions, 10209 flow, removed 137 selfloop flow, removed 21 redundant places. [2022-01-19 07:03:41,867 INFO L242 Difference]: Finished difference. Result has 543 places, 440 transitions, 6086 flow [2022-01-19 07:03:41,867 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5202, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=6086, PETRI_PLACES=543, PETRI_TRANSITIONS=440} [2022-01-19 07:03:41,867 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 356 predicate places. [2022-01-19 07:03:41,867 INFO L470 AbstractCegarLoop]: Abstraction has has 543 places, 440 transitions, 6086 flow [2022-01-19 07:03:41,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:41,868 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:41,868 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:41,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-19 07:03:41,868 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:41,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:41,868 INFO L85 PathProgramCache]: Analyzing trace with hash -193100770, now seen corresponding path program 20 times [2022-01-19 07:03:41,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:41,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494241857] [2022-01-19 07:03:41,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:41,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:41,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:41,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:41,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494241857] [2022-01-19 07:03:41,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494241857] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:41,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:41,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:03:41,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976978134] [2022-01-19 07:03:41,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:41,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:03:41,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:41,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:03:41,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:03:42,000 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:03:42,001 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 440 transitions, 6086 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:42,001 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:42,001 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:03:42,001 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:43,395 INFO L129 PetriNetUnfolder]: 813/2914 cut-off events. [2022-01-19 07:03:43,395 INFO L130 PetriNetUnfolder]: For 64230/64258 co-relation queries the response was YES. [2022-01-19 07:03:43,436 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18840 conditions, 2914 events. 813/2914 cut-off events. For 64230/64258 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 22924 event pairs, 377 based on Foata normal form. 11/2828 useless extension candidates. Maximal degree in co-relation 18643. Up to 924 conditions per place. [2022-01-19 07:03:43,445 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 273 selfloop transitions, 127 changer transitions 80/621 dead transitions. [2022-01-19 07:03:43,446 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 621 transitions, 10926 flow [2022-01-19 07:03:43,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 07:03:43,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 07:03:43,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7180 transitions. [2022-01-19 07:03:43,449 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7597883597883598 [2022-01-19 07:03:43,449 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7180 transitions. [2022-01-19 07:03:43,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7180 transitions. [2022-01-19 07:03:43,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:43,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7180 transitions. [2022-01-19 07:03:43,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.55555555555554) internal successors, (7180), 45 states have internal predecessors, (7180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:43,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:43,458 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:43,458 INFO L186 Difference]: Start difference. First operand has 543 places, 440 transitions, 6086 flow. Second operand 45 states and 7180 transitions. [2022-01-19 07:03:43,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 621 transitions, 10926 flow [2022-01-19 07:03:43,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 621 transitions, 10558 flow, removed 152 selfloop flow, removed 29 redundant places. [2022-01-19 07:03:43,739 INFO L242 Difference]: Finished difference. Result has 559 places, 444 transitions, 6474 flow [2022-01-19 07:03:43,740 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5932, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=6474, PETRI_PLACES=559, PETRI_TRANSITIONS=444} [2022-01-19 07:03:43,740 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 372 predicate places. [2022-01-19 07:03:43,740 INFO L470 AbstractCegarLoop]: Abstraction has has 559 places, 444 transitions, 6474 flow [2022-01-19 07:03:43,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:43,740 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:43,740 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:43,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-01-19 07:03:43,741 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:43,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:43,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1361915772, now seen corresponding path program 21 times [2022-01-19 07:03:43,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:43,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805834106] [2022-01-19 07:03:43,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:43,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:43,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:43,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:43,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805834106] [2022-01-19 07:03:43,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805834106] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:43,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:43,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:03:43,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865537967] [2022-01-19 07:03:43,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:43,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:03:43,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:43,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:03:43,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:03:43,853 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:03:43,854 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 559 places, 444 transitions, 6474 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:43,854 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:43,854 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:03:43,854 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:45,087 INFO L129 PetriNetUnfolder]: 804/2847 cut-off events. [2022-01-19 07:03:45,087 INFO L130 PetriNetUnfolder]: For 64950/64978 co-relation queries the response was YES. [2022-01-19 07:03:45,120 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18857 conditions, 2847 events. 804/2847 cut-off events. For 64950/64978 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 22108 event pairs, 366 based on Foata normal form. 11/2760 useless extension candidates. Maximal degree in co-relation 18653. Up to 945 conditions per place. [2022-01-19 07:03:45,129 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 274 selfloop transitions, 124 changer transitions 69/608 dead transitions. [2022-01-19 07:03:45,129 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 608 transitions, 10998 flow [2022-01-19 07:03:45,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:03:45,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:03:45,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6078 transitions. [2022-01-19 07:03:45,131 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616541353383459 [2022-01-19 07:03:45,131 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6078 transitions. [2022-01-19 07:03:45,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6078 transitions. [2022-01-19 07:03:45,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:45,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6078 transitions. [2022-01-19 07:03:45,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.94736842105263) internal successors, (6078), 38 states have internal predecessors, (6078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:45,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:45,139 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:45,139 INFO L186 Difference]: Start difference. First operand has 559 places, 444 transitions, 6474 flow. Second operand 38 states and 6078 transitions. [2022-01-19 07:03:45,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 608 transitions, 10998 flow [2022-01-19 07:03:45,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 608 transitions, 10536 flow, removed 155 selfloop flow, removed 33 redundant places. [2022-01-19 07:03:45,392 INFO L242 Difference]: Finished difference. Result has 554 places, 451 transitions, 6799 flow [2022-01-19 07:03:45,393 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6236, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=6799, PETRI_PLACES=554, PETRI_TRANSITIONS=451} [2022-01-19 07:03:45,393 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 367 predicate places. [2022-01-19 07:03:45,393 INFO L470 AbstractCegarLoop]: Abstraction has has 554 places, 451 transitions, 6799 flow [2022-01-19 07:03:45,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:45,393 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:45,393 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:45,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-19 07:03:45,393 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:45,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:45,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1406673902, now seen corresponding path program 22 times [2022-01-19 07:03:45,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:45,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407713556] [2022-01-19 07:03:45,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:45,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:45,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:45,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:45,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:45,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407713556] [2022-01-19 07:03:45,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407713556] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:45,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:45,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:03:45,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115628111] [2022-01-19 07:03:45,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:45,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:03:45,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:45,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:03:45,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:03:45,500 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:03:45,501 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 451 transitions, 6799 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:45,501 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:45,501 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:03:45,501 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:46,590 INFO L129 PetriNetUnfolder]: 792/2734 cut-off events. [2022-01-19 07:03:46,590 INFO L130 PetriNetUnfolder]: For 63558/63588 co-relation queries the response was YES. [2022-01-19 07:03:46,630 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18524 conditions, 2734 events. 792/2734 cut-off events. For 63558/63588 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20948 event pairs, 368 based on Foata normal form. 13/2648 useless extension candidates. Maximal degree in co-relation 18326. Up to 950 conditions per place. [2022-01-19 07:03:46,639 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 267 selfloop transitions, 124 changer transitions 59/591 dead transitions. [2022-01-19 07:03:46,639 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 591 transitions, 10643 flow [2022-01-19 07:03:46,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:03:46,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:03:46,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4816 transitions. [2022-01-19 07:03:46,641 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7644444444444445 [2022-01-19 07:03:46,642 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4816 transitions. [2022-01-19 07:03:46,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4816 transitions. [2022-01-19 07:03:46,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:46,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4816 transitions. [2022-01-19 07:03:46,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.53333333333333) internal successors, (4816), 30 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:46,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:46,648 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:46,648 INFO L186 Difference]: Start difference. First operand has 554 places, 451 transitions, 6799 flow. Second operand 30 states and 4816 transitions. [2022-01-19 07:03:46,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 591 transitions, 10643 flow [2022-01-19 07:03:46,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 591 transitions, 10168 flow, removed 155 selfloop flow, removed 22 redundant places. [2022-01-19 07:03:46,924 INFO L242 Difference]: Finished difference. Result has 551 places, 456 transitions, 6961 flow [2022-01-19 07:03:46,924 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6528, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=6961, PETRI_PLACES=551, PETRI_TRANSITIONS=456} [2022-01-19 07:03:46,925 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 364 predicate places. [2022-01-19 07:03:46,925 INFO L470 AbstractCegarLoop]: Abstraction has has 551 places, 456 transitions, 6961 flow [2022-01-19 07:03:46,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:46,925 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:46,925 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:46,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-01-19 07:03:46,925 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:46,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:46,926 INFO L85 PathProgramCache]: Analyzing trace with hash 773785554, now seen corresponding path program 23 times [2022-01-19 07:03:46,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:46,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720918980] [2022-01-19 07:03:46,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:46,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:47,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:47,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:47,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720918980] [2022-01-19 07:03:47,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720918980] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:47,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:47,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:03:47,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946941390] [2022-01-19 07:03:47,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:47,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:03:47,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:47,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:03:47,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:03:47,036 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:03:47,037 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 456 transitions, 6961 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:47,037 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:47,037 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:03:47,037 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:48,242 INFO L129 PetriNetUnfolder]: 785/2722 cut-off events. [2022-01-19 07:03:48,242 INFO L130 PetriNetUnfolder]: For 60860/60890 co-relation queries the response was YES. [2022-01-19 07:03:48,289 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18238 conditions, 2722 events. 785/2722 cut-off events. For 60860/60890 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 20803 event pairs, 370 based on Foata normal form. 13/2636 useless extension candidates. Maximal degree in co-relation 18044. Up to 948 conditions per place. [2022-01-19 07:03:48,300 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 269 selfloop transitions, 127 changer transitions 59/596 dead transitions. [2022-01-19 07:03:48,300 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 596 transitions, 10737 flow [2022-01-19 07:03:48,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:03:48,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:03:48,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4814 transitions. [2022-01-19 07:03:48,302 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7641269841269841 [2022-01-19 07:03:48,302 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4814 transitions. [2022-01-19 07:03:48,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4814 transitions. [2022-01-19 07:03:48,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:48,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4814 transitions. [2022-01-19 07:03:48,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.46666666666667) internal successors, (4814), 30 states have internal predecessors, (4814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:48,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:48,309 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:48,309 INFO L186 Difference]: Start difference. First operand has 551 places, 456 transitions, 6961 flow. Second operand 30 states and 4814 transitions. [2022-01-19 07:03:48,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 596 transitions, 10737 flow [2022-01-19 07:03:48,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 596 transitions, 10468 flow, removed 93 selfloop flow, removed 13 redundant places. [2022-01-19 07:03:48,586 INFO L242 Difference]: Finished difference. Result has 566 places, 461 transitions, 7221 flow [2022-01-19 07:03:48,586 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6780, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7221, PETRI_PLACES=566, PETRI_TRANSITIONS=461} [2022-01-19 07:03:48,586 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 379 predicate places. [2022-01-19 07:03:48,586 INFO L470 AbstractCegarLoop]: Abstraction has has 566 places, 461 transitions, 7221 flow [2022-01-19 07:03:48,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:48,587 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:48,587 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:48,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-01-19 07:03:48,587 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:48,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:48,587 INFO L85 PathProgramCache]: Analyzing trace with hash 476356618, now seen corresponding path program 24 times [2022-01-19 07:03:48,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:48,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218595441] [2022-01-19 07:03:48,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:48,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:48,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:48,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:48,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218595441] [2022-01-19 07:03:48,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218595441] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:48,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:48,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:03:48,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274162104] [2022-01-19 07:03:48,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:48,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:03:48,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:48,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:03:48,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:03:48,693 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:03:48,693 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 461 transitions, 7221 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:48,693 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:48,693 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:03:48,693 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:49,688 INFO L129 PetriNetUnfolder]: 760/2723 cut-off events. [2022-01-19 07:03:49,689 INFO L130 PetriNetUnfolder]: For 61002/61030 co-relation queries the response was YES. [2022-01-19 07:03:49,730 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17750 conditions, 2723 events. 760/2723 cut-off events. For 61002/61030 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 20854 event pairs, 375 based on Foata normal form. 11/2635 useless extension candidates. Maximal degree in co-relation 17552. Up to 936 conditions per place. [2022-01-19 07:03:49,738 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 262 selfloop transitions, 95 changer transitions 62/560 dead transitions. [2022-01-19 07:03:49,739 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 560 transitions, 9882 flow [2022-01-19 07:03:49,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 07:03:49,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 07:03:49,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4333 transitions. [2022-01-19 07:03:49,741 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7641975308641975 [2022-01-19 07:03:49,741 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4333 transitions. [2022-01-19 07:03:49,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4333 transitions. [2022-01-19 07:03:49,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:49,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4333 transitions. [2022-01-19 07:03:49,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 160.4814814814815) internal successors, (4333), 27 states have internal predecessors, (4333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:49,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:49,746 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:49,746 INFO L186 Difference]: Start difference. First operand has 566 places, 461 transitions, 7221 flow. Second operand 27 states and 4333 transitions. [2022-01-19 07:03:49,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 560 transitions, 9882 flow [2022-01-19 07:03:50,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 560 transitions, 9638 flow, removed 55 selfloop flow, removed 14 redundant places. [2022-01-19 07:03:50,070 INFO L242 Difference]: Finished difference. Result has 570 places, 424 transitions, 6311 flow [2022-01-19 07:03:50,070 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7012, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=6311, PETRI_PLACES=570, PETRI_TRANSITIONS=424} [2022-01-19 07:03:50,071 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 383 predicate places. [2022-01-19 07:03:50,071 INFO L470 AbstractCegarLoop]: Abstraction has has 570 places, 424 transitions, 6311 flow [2022-01-19 07:03:50,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:50,071 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:50,071 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:50,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-01-19 07:03:50,071 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:50,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:50,072 INFO L85 PathProgramCache]: Analyzing trace with hash -118413066, now seen corresponding path program 25 times [2022-01-19 07:03:50,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:50,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871490] [2022-01-19 07:03:50,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:50,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:50,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:50,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:50,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871490] [2022-01-19 07:03:50,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871490] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:50,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:50,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:03:50,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246015589] [2022-01-19 07:03:50,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:50,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:03:50,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:50,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:03:50,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:03:50,180 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:03:50,181 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 424 transitions, 6311 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:50,181 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:50,181 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:03:50,181 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:51,284 INFO L129 PetriNetUnfolder]: 759/2666 cut-off events. [2022-01-19 07:03:51,284 INFO L130 PetriNetUnfolder]: For 61442/61472 co-relation queries the response was YES. [2022-01-19 07:03:51,322 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17706 conditions, 2666 events. 759/2666 cut-off events. For 61442/61472 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 20210 event pairs, 354 based on Foata normal form. 13/2587 useless extension candidates. Maximal degree in co-relation 17510. Up to 922 conditions per place. [2022-01-19 07:03:51,331 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 264 selfloop transitions, 105 changer transitions 71/581 dead transitions. [2022-01-19 07:03:51,331 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 581 transitions, 10534 flow [2022-01-19 07:03:51,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:03:51,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:03:51,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6075 transitions. [2022-01-19 07:03:51,335 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7612781954887218 [2022-01-19 07:03:51,335 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6075 transitions. [2022-01-19 07:03:51,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6075 transitions. [2022-01-19 07:03:51,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:51,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6075 transitions. [2022-01-19 07:03:51,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.8684210526316) internal successors, (6075), 38 states have internal predecessors, (6075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:51,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:51,345 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:51,345 INFO L186 Difference]: Start difference. First operand has 570 places, 424 transitions, 6311 flow. Second operand 38 states and 6075 transitions. [2022-01-19 07:03:51,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 581 transitions, 10534 flow [2022-01-19 07:03:51,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 581 transitions, 9689 flow, removed 57 selfloop flow, removed 37 redundant places. [2022-01-19 07:03:51,611 INFO L242 Difference]: Finished difference. Result has 553 places, 428 transitions, 6117 flow [2022-01-19 07:03:51,612 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5691, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=6117, PETRI_PLACES=553, PETRI_TRANSITIONS=428} [2022-01-19 07:03:51,612 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 366 predicate places. [2022-01-19 07:03:51,612 INFO L470 AbstractCegarLoop]: Abstraction has has 553 places, 428 transitions, 6117 flow [2022-01-19 07:03:51,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:51,612 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:51,613 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:51,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-01-19 07:03:51,613 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:51,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:51,613 INFO L85 PathProgramCache]: Analyzing trace with hash 106408980, now seen corresponding path program 26 times [2022-01-19 07:03:51,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:51,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401530289] [2022-01-19 07:03:51,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:51,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:51,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:51,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:51,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:51,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401530289] [2022-01-19 07:03:51,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401530289] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:51,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:51,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:03:51,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317819584] [2022-01-19 07:03:51,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:51,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:03:51,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:51,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:03:51,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:03:51,720 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:03:51,721 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 428 transitions, 6117 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:51,721 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:51,721 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:03:51,721 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:52,718 INFO L129 PetriNetUnfolder]: 749/2624 cut-off events. [2022-01-19 07:03:52,718 INFO L130 PetriNetUnfolder]: For 55718/55748 co-relation queries the response was YES. [2022-01-19 07:03:52,751 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16946 conditions, 2624 events. 749/2624 cut-off events. For 55718/55748 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 19828 event pairs, 359 based on Foata normal form. 13/2541 useless extension candidates. Maximal degree in co-relation 16749. Up to 928 conditions per place. [2022-01-19 07:03:52,759 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 257 selfloop transitions, 105 changer transitions 60/563 dead transitions. [2022-01-19 07:03:52,759 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 563 transitions, 9714 flow [2022-01-19 07:03:52,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:03:52,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:03:52,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4813 transitions. [2022-01-19 07:03:52,762 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763968253968254 [2022-01-19 07:03:52,762 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4813 transitions. [2022-01-19 07:03:52,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4813 transitions. [2022-01-19 07:03:52,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:52,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4813 transitions. [2022-01-19 07:03:52,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:52,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:52,768 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:52,768 INFO L186 Difference]: Start difference. First operand has 553 places, 428 transitions, 6117 flow. Second operand 30 states and 4813 transitions. [2022-01-19 07:03:52,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 558 places, 563 transitions, 9714 flow [2022-01-19 07:03:52,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 563 transitions, 9359 flow, removed 125 selfloop flow, removed 21 redundant places. [2022-01-19 07:03:53,005 INFO L242 Difference]: Finished difference. Result has 548 places, 430 transitions, 6217 flow [2022-01-19 07:03:53,006 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5923, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=6217, PETRI_PLACES=548, PETRI_TRANSITIONS=430} [2022-01-19 07:03:53,006 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 361 predicate places. [2022-01-19 07:03:53,006 INFO L470 AbstractCegarLoop]: Abstraction has has 548 places, 430 transitions, 6217 flow [2022-01-19 07:03:53,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:53,006 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:53,007 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:53,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-01-19 07:03:53,007 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:53,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:53,007 INFO L85 PathProgramCache]: Analyzing trace with hash -837207342, now seen corresponding path program 27 times [2022-01-19 07:03:53,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:53,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034251212] [2022-01-19 07:03:53,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:53,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:53,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:53,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:53,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:53,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034251212] [2022-01-19 07:03:53,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034251212] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:53,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:53,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:03:53,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307057617] [2022-01-19 07:03:53,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:53,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:03:53,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:53,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:03:53,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:03:53,111 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:03:53,112 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 430 transitions, 6217 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:53,112 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:53,112 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:03:53,112 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:54,103 INFO L129 PetriNetUnfolder]: 740/2597 cut-off events. [2022-01-19 07:03:54,103 INFO L130 PetriNetUnfolder]: For 53562/53592 co-relation queries the response was YES. [2022-01-19 07:03:54,142 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16677 conditions, 2597 events. 740/2597 cut-off events. For 53562/53592 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 19592 event pairs, 361 based on Foata normal form. 13/2515 useless extension candidates. Maximal degree in co-relation 16487. Up to 926 conditions per place. [2022-01-19 07:03:54,152 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 255 selfloop transitions, 93 changer transitions 59/548 dead transitions. [2022-01-19 07:03:54,153 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 548 transitions, 9257 flow [2022-01-19 07:03:54,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:03:54,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:03:54,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4648 transitions. [2022-01-19 07:03:54,155 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7632183908045977 [2022-01-19 07:03:54,155 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4648 transitions. [2022-01-19 07:03:54,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4648 transitions. [2022-01-19 07:03:54,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:54,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4648 transitions. [2022-01-19 07:03:54,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.27586206896552) internal successors, (4648), 29 states have internal predecessors, (4648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:54,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:54,162 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:54,162 INFO L186 Difference]: Start difference. First operand has 548 places, 430 transitions, 6217 flow. Second operand 29 states and 4648 transitions. [2022-01-19 07:03:54,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 548 transitions, 9257 flow [2022-01-19 07:03:54,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 548 transitions, 8963 flow, removed 64 selfloop flow, removed 16 redundant places. [2022-01-19 07:03:54,406 INFO L242 Difference]: Finished difference. Result has 556 places, 417 transitions, 5872 flow [2022-01-19 07:03:54,406 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5984, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=5872, PETRI_PLACES=556, PETRI_TRANSITIONS=417} [2022-01-19 07:03:54,406 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 369 predicate places. [2022-01-19 07:03:54,406 INFO L470 AbstractCegarLoop]: Abstraction has has 556 places, 417 transitions, 5872 flow [2022-01-19 07:03:54,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:54,407 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:54,407 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:54,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-01-19 07:03:54,407 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:54,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:54,407 INFO L85 PathProgramCache]: Analyzing trace with hash 714491584, now seen corresponding path program 28 times [2022-01-19 07:03:54,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:54,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862316103] [2022-01-19 07:03:54,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:54,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:54,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:54,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:54,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862316103] [2022-01-19 07:03:54,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862316103] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:54,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:54,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:03:54,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690742439] [2022-01-19 07:03:54,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:54,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:03:54,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:54,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:03:54,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:03:54,537 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:03:54,538 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 417 transitions, 5872 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:54,538 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:54,538 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:03:54,538 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:55,481 INFO L129 PetriNetUnfolder]: 722/2536 cut-off events. [2022-01-19 07:03:55,481 INFO L130 PetriNetUnfolder]: For 52625/52655 co-relation queries the response was YES. [2022-01-19 07:03:55,515 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16235 conditions, 2536 events. 722/2536 cut-off events. For 52625/52655 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 18911 event pairs, 358 based on Foata normal form. 13/2454 useless extension candidates. Maximal degree in co-relation 16044. Up to 916 conditions per place. [2022-01-19 07:03:55,523 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 242 selfloop transitions, 80 changer transitions 61/524 dead transitions. [2022-01-19 07:03:55,523 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 524 transitions, 8586 flow [2022-01-19 07:03:55,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 07:03:55,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 07:03:55,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4488 transitions. [2022-01-19 07:03:55,525 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763265306122449 [2022-01-19 07:03:55,525 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4488 transitions. [2022-01-19 07:03:55,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4488 transitions. [2022-01-19 07:03:55,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:55,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4488 transitions. [2022-01-19 07:03:55,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.28571428571428) internal successors, (4488), 28 states have internal predecessors, (4488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:55,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:55,531 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:55,531 INFO L186 Difference]: Start difference. First operand has 556 places, 417 transitions, 5872 flow. Second operand 28 states and 4488 transitions. [2022-01-19 07:03:55,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 524 transitions, 8586 flow [2022-01-19 07:03:55,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 524 transitions, 8104 flow, removed 33 selfloop flow, removed 31 redundant places. [2022-01-19 07:03:55,751 INFO L242 Difference]: Finished difference. Result has 535 places, 392 transitions, 5065 flow [2022-01-19 07:03:55,751 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5468, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=5065, PETRI_PLACES=535, PETRI_TRANSITIONS=392} [2022-01-19 07:03:55,751 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 348 predicate places. [2022-01-19 07:03:55,752 INFO L470 AbstractCegarLoop]: Abstraction has has 535 places, 392 transitions, 5065 flow [2022-01-19 07:03:55,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:55,752 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:55,752 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:55,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-01-19 07:03:55,752 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:55,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:55,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1693959950, now seen corresponding path program 29 times [2022-01-19 07:03:55,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:55,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058411581] [2022-01-19 07:03:55,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:55,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:55,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:55,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:55,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058411581] [2022-01-19 07:03:55,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058411581] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:55,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:55,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:03:55,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846154794] [2022-01-19 07:03:55,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:55,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:03:55,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:55,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:03:55,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:03:55,861 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:03:55,862 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 392 transitions, 5065 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:55,862 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:55,862 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:03:55,862 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:56,748 INFO L129 PetriNetUnfolder]: 691/2512 cut-off events. [2022-01-19 07:03:56,748 INFO L130 PetriNetUnfolder]: For 48483/48511 co-relation queries the response was YES. [2022-01-19 07:03:56,786 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15126 conditions, 2512 events. 691/2512 cut-off events. For 48483/48511 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 18663 event pairs, 352 based on Foata normal form. 11/2429 useless extension candidates. Maximal degree in co-relation 14942. Up to 898 conditions per place. [2022-01-19 07:03:56,794 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 216 selfloop transitions, 55 changer transitions 63/475 dead transitions. [2022-01-19 07:03:56,794 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 475 transitions, 7119 flow [2022-01-19 07:03:56,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:03:56,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:03:56,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4784 transitions. [2022-01-19 07:03:56,796 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7593650793650794 [2022-01-19 07:03:56,796 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4784 transitions. [2022-01-19 07:03:56,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4784 transitions. [2022-01-19 07:03:56,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:56,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4784 transitions. [2022-01-19 07:03:56,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.46666666666667) internal successors, (4784), 30 states have internal predecessors, (4784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:56,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:56,802 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:56,802 INFO L186 Difference]: Start difference. First operand has 535 places, 392 transitions, 5065 flow. Second operand 30 states and 4784 transitions. [2022-01-19 07:03:56,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 475 transitions, 7119 flow [2022-01-19 07:03:56,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 475 transitions, 6675 flow, removed 30 selfloop flow, removed 34 redundant places. [2022-01-19 07:03:56,971 INFO L242 Difference]: Finished difference. Result has 502 places, 341 transitions, 3736 flow [2022-01-19 07:03:56,971 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4653, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3736, PETRI_PLACES=502, PETRI_TRANSITIONS=341} [2022-01-19 07:03:56,971 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 315 predicate places. [2022-01-19 07:03:56,971 INFO L470 AbstractCegarLoop]: Abstraction has has 502 places, 341 transitions, 3736 flow [2022-01-19 07:03:56,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:56,972 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:56,972 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:56,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-01-19 07:03:56,972 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:56,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:56,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1689709140, now seen corresponding path program 30 times [2022-01-19 07:03:56,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:56,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781966064] [2022-01-19 07:03:56,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:56,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:57,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:57,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:57,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781966064] [2022-01-19 07:03:57,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781966064] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:57,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:57,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:03:57,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761814805] [2022-01-19 07:03:57,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:57,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:03:57,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:57,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:03:57,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:03:57,091 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:03:57,092 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 341 transitions, 3736 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:57,092 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:57,092 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:03:57,092 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:58,143 INFO L129 PetriNetUnfolder]: 715/2503 cut-off events. [2022-01-19 07:03:58,143 INFO L130 PetriNetUnfolder]: For 46874/46898 co-relation queries the response was YES. [2022-01-19 07:03:58,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15320 conditions, 2503 events. 715/2503 cut-off events. For 46874/46898 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 18503 event pairs, 370 based on Foata normal form. 7/2416 useless extension candidates. Maximal degree in co-relation 15150. Up to 898 conditions per place. [2022-01-19 07:03:58,179 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 213 selfloop transitions, 71 changer transitions 62/487 dead transitions. [2022-01-19 07:03:58,179 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 487 transitions, 7449 flow [2022-01-19 07:03:58,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:03:58,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:03:58,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6072 transitions. [2022-01-19 07:03:58,182 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7609022556390977 [2022-01-19 07:03:58,182 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6072 transitions. [2022-01-19 07:03:58,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6072 transitions. [2022-01-19 07:03:58,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:58,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6072 transitions. [2022-01-19 07:03:58,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.78947368421052) internal successors, (6072), 38 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:58,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:58,190 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:58,190 INFO L186 Difference]: Start difference. First operand has 502 places, 341 transitions, 3736 flow. Second operand 38 states and 6072 transitions. [2022-01-19 07:03:58,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 487 transitions, 7449 flow [2022-01-19 07:03:58,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 487 transitions, 6592 flow, removed 137 selfloop flow, removed 34 redundant places. [2022-01-19 07:03:58,336 INFO L242 Difference]: Finished difference. Result has 467 places, 359 transitions, 3958 flow [2022-01-19 07:03:58,336 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3267, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3958, PETRI_PLACES=467, PETRI_TRANSITIONS=359} [2022-01-19 07:03:58,336 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 280 predicate places. [2022-01-19 07:03:58,336 INFO L470 AbstractCegarLoop]: Abstraction has has 467 places, 359 transitions, 3958 flow [2022-01-19 07:03:58,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:58,337 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:58,337 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:58,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-01-19 07:03:58,337 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:58,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:58,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1085254400, now seen corresponding path program 31 times [2022-01-19 07:03:58,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:58,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126938706] [2022-01-19 07:03:58,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:58,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:58,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:58,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:58,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126938706] [2022-01-19 07:03:58,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126938706] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:58,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:58,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:03:58,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163236070] [2022-01-19 07:03:58,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:58,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:03:58,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:58,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:03:58,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:03:58,455 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:03:58,456 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 359 transitions, 3958 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:58,456 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:58,456 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:03:58,456 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:03:59,438 INFO L129 PetriNetUnfolder]: 745/2571 cut-off events. [2022-01-19 07:03:59,438 INFO L130 PetriNetUnfolder]: For 42544/42568 co-relation queries the response was YES. [2022-01-19 07:03:59,471 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15251 conditions, 2571 events. 745/2571 cut-off events. For 42544/42568 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 19146 event pairs, 384 based on Foata normal form. 7/2483 useless extension candidates. Maximal degree in co-relation 15083. Up to 898 conditions per place. [2022-01-19 07:03:59,478 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 219 selfloop transitions, 82 changer transitions 62/504 dead transitions. [2022-01-19 07:03:59,478 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 504 transitions, 7670 flow [2022-01-19 07:03:59,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 07:03:59,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 07:03:59,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5604 transitions. [2022-01-19 07:03:59,481 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7624489795918368 [2022-01-19 07:03:59,481 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5604 transitions. [2022-01-19 07:03:59,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5604 transitions. [2022-01-19 07:03:59,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:03:59,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5604 transitions. [2022-01-19 07:03:59,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 160.11428571428573) internal successors, (5604), 35 states have internal predecessors, (5604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:59,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:59,488 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:59,488 INFO L186 Difference]: Start difference. First operand has 467 places, 359 transitions, 3958 flow. Second operand 35 states and 5604 transitions. [2022-01-19 07:03:59,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 504 transitions, 7670 flow [2022-01-19 07:03:59,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 504 transitions, 7021 flow, removed 283 selfloop flow, removed 16 redundant places. [2022-01-19 07:03:59,640 INFO L242 Difference]: Finished difference. Result has 487 places, 378 transitions, 4374 flow [2022-01-19 07:03:59,641 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3678, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4374, PETRI_PLACES=487, PETRI_TRANSITIONS=378} [2022-01-19 07:03:59,641 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 300 predicate places. [2022-01-19 07:03:59,641 INFO L470 AbstractCegarLoop]: Abstraction has has 487 places, 378 transitions, 4374 flow [2022-01-19 07:03:59,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:59,641 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:03:59,641 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:03:59,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-01-19 07:03:59,642 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:03:59,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:03:59,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1540722402, now seen corresponding path program 32 times [2022-01-19 07:03:59,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:03:59,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009114650] [2022-01-19 07:03:59,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:03:59,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:03:59,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:03:59,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:03:59,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:03:59,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009114650] [2022-01-19 07:03:59,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009114650] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:03:59,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:03:59,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:03:59,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152084528] [2022-01-19 07:03:59,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:03:59,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:03:59,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:03:59,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:03:59,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:03:59,752 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:03:59,752 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 378 transitions, 4374 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:03:59,753 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:03:59,753 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:03:59,753 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:00,783 INFO L129 PetriNetUnfolder]: 767/2649 cut-off events. [2022-01-19 07:04:00,783 INFO L130 PetriNetUnfolder]: For 46385/46409 co-relation queries the response was YES. [2022-01-19 07:04:00,829 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16125 conditions, 2649 events. 767/2649 cut-off events. For 46385/46409 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 19902 event pairs, 375 based on Foata normal form. 7/2560 useless extension candidates. Maximal degree in co-relation 15945. Up to 898 conditions per place. [2022-01-19 07:04:00,840 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 233 selfloop transitions, 86 changer transitions 62/522 dead transitions. [2022-01-19 07:04:00,840 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 522 transitions, 8175 flow [2022-01-19 07:04:00,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 07:04:00,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 07:04:00,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5918 transitions. [2022-01-19 07:04:00,843 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616473616473617 [2022-01-19 07:04:00,843 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5918 transitions. [2022-01-19 07:04:00,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5918 transitions. [2022-01-19 07:04:00,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:00,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5918 transitions. [2022-01-19 07:04:00,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 159.94594594594594) internal successors, (5918), 37 states have internal predecessors, (5918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:00,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:00,850 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:00,851 INFO L186 Difference]: Start difference. First operand has 487 places, 378 transitions, 4374 flow. Second operand 37 states and 5918 transitions. [2022-01-19 07:04:00,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 522 transitions, 8175 flow [2022-01-19 07:04:01,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 522 transitions, 7684 flow, removed 182 selfloop flow, removed 19 redundant places. [2022-01-19 07:04:01,024 INFO L242 Difference]: Finished difference. Result has 508 places, 395 transitions, 4872 flow [2022-01-19 07:04:01,024 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4169, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=4872, PETRI_PLACES=508, PETRI_TRANSITIONS=395} [2022-01-19 07:04:01,024 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 321 predicate places. [2022-01-19 07:04:01,024 INFO L470 AbstractCegarLoop]: Abstraction has has 508 places, 395 transitions, 4872 flow [2022-01-19 07:04:01,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:01,025 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:01,025 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:01,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-01-19 07:04:01,025 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:01,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:01,025 INFO L85 PathProgramCache]: Analyzing trace with hash 957886028, now seen corresponding path program 33 times [2022-01-19 07:04:01,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:01,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133413638] [2022-01-19 07:04:01,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:01,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:01,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:01,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:01,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:01,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133413638] [2022-01-19 07:04:01,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133413638] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:01,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:01,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:01,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479498191] [2022-01-19 07:04:01,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:01,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:01,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:01,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:01,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:01,134 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:01,134 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 395 transitions, 4872 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:01,134 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:01,134 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:01,135 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:02,317 INFO L129 PetriNetUnfolder]: 765/2652 cut-off events. [2022-01-19 07:04:02,318 INFO L130 PetriNetUnfolder]: For 47906/47930 co-relation queries the response was YES. [2022-01-19 07:04:02,358 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16310 conditions, 2652 events. 765/2652 cut-off events. For 47906/47930 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 19936 event pairs, 393 based on Foata normal form. 7/2562 useless extension candidates. Maximal degree in co-relation 16121. Up to 898 conditions per place. [2022-01-19 07:04:02,367 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 236 selfloop transitions, 90 changer transitions 64/531 dead transitions. [2022-01-19 07:04:02,367 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 531 transitions, 8581 flow [2022-01-19 07:04:02,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 07:04:02,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 07:04:02,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5763 transitions. [2022-01-19 07:04:02,370 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7623015873015873 [2022-01-19 07:04:02,370 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5763 transitions. [2022-01-19 07:04:02,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5763 transitions. [2022-01-19 07:04:02,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:02,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5763 transitions. [2022-01-19 07:04:02,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.08333333333334) internal successors, (5763), 36 states have internal predecessors, (5763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:02,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:02,377 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:02,377 INFO L186 Difference]: Start difference. First operand has 508 places, 395 transitions, 4872 flow. Second operand 36 states and 5763 transitions. [2022-01-19 07:04:02,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 531 transitions, 8581 flow [2022-01-19 07:04:02,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 531 transitions, 8162 flow, removed 168 selfloop flow, removed 19 redundant places. [2022-01-19 07:04:02,590 INFO L242 Difference]: Finished difference. Result has 525 places, 404 transitions, 5233 flow [2022-01-19 07:04:02,591 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4688, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=5233, PETRI_PLACES=525, PETRI_TRANSITIONS=404} [2022-01-19 07:04:02,591 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 338 predicate places. [2022-01-19 07:04:02,591 INFO L470 AbstractCegarLoop]: Abstraction has has 525 places, 404 transitions, 5233 flow [2022-01-19 07:04:02,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:02,591 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:02,591 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:02,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-01-19 07:04:02,592 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:02,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:02,592 INFO L85 PathProgramCache]: Analyzing trace with hash -127130082, now seen corresponding path program 34 times [2022-01-19 07:04:02,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:02,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633886601] [2022-01-19 07:04:02,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:02,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:02,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:02,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:02,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633886601] [2022-01-19 07:04:02,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633886601] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:02,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:02,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:02,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972711504] [2022-01-19 07:04:02,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:02,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:02,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:02,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:02,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:02,705 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:02,706 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 404 transitions, 5233 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:02,706 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:02,706 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:02,706 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:03,818 INFO L129 PetriNetUnfolder]: 799/2737 cut-off events. [2022-01-19 07:04:03,818 INFO L130 PetriNetUnfolder]: For 53089/53113 co-relation queries the response was YES. [2022-01-19 07:04:03,858 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17357 conditions, 2737 events. 799/2737 cut-off events. For 53089/53113 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20893 event pairs, 369 based on Foata normal form. 7/2652 useless extension candidates. Maximal degree in co-relation 17161. Up to 900 conditions per place. [2022-01-19 07:04:03,866 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 253 selfloop transitions, 111 changer transitions 70/575 dead transitions. [2022-01-19 07:04:03,866 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 575 transitions, 9709 flow [2022-01-19 07:04:03,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:04:03,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:04:03,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6079 transitions. [2022-01-19 07:04:03,869 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7617794486215539 [2022-01-19 07:04:03,869 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6079 transitions. [2022-01-19 07:04:03,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6079 transitions. [2022-01-19 07:04:03,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:03,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6079 transitions. [2022-01-19 07:04:03,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.97368421052633) internal successors, (6079), 38 states have internal predecessors, (6079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:03,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:03,877 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:03,877 INFO L186 Difference]: Start difference. First operand has 525 places, 404 transitions, 5233 flow. Second operand 38 states and 6079 transitions. [2022-01-19 07:04:03,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 575 transitions, 9709 flow [2022-01-19 07:04:04,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 575 transitions, 9226 flow, removed 151 selfloop flow, removed 19 redundant places. [2022-01-19 07:04:04,147 INFO L242 Difference]: Finished difference. Result has 546 places, 428 transitions, 5834 flow [2022-01-19 07:04:04,148 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4949, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=5834, PETRI_PLACES=546, PETRI_TRANSITIONS=428} [2022-01-19 07:04:04,148 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 359 predicate places. [2022-01-19 07:04:04,148 INFO L470 AbstractCegarLoop]: Abstraction has has 546 places, 428 transitions, 5834 flow [2022-01-19 07:04:04,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:04,148 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:04,148 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:04,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-01-19 07:04:04,149 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:04,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:04,149 INFO L85 PathProgramCache]: Analyzing trace with hash 835890076, now seen corresponding path program 35 times [2022-01-19 07:04:04,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:04,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091255426] [2022-01-19 07:04:04,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:04,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:04,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:04,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:04,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091255426] [2022-01-19 07:04:04,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091255426] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:04,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:04,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:04,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696021314] [2022-01-19 07:04:04,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:04,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:04,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:04,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:04,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:04,261 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:04,262 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 428 transitions, 5834 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:04,262 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:04,262 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:04,262 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:05,340 INFO L129 PetriNetUnfolder]: 802/2744 cut-off events. [2022-01-19 07:04:05,340 INFO L130 PetriNetUnfolder]: For 52872/52896 co-relation queries the response was YES. [2022-01-19 07:04:05,371 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17475 conditions, 2744 events. 802/2744 cut-off events. For 52872/52896 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20790 event pairs, 394 based on Foata normal form. 7/2654 useless extension candidates. Maximal degree in co-relation 17271. Up to 912 conditions per place. [2022-01-19 07:04:05,379 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 249 selfloop transitions, 106 changer transitions 55/551 dead transitions. [2022-01-19 07:04:05,379 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 551 transitions, 9089 flow [2022-01-19 07:04:05,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:04:05,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:04:05,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4664 transitions. [2022-01-19 07:04:05,381 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658456486042693 [2022-01-19 07:04:05,381 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4664 transitions. [2022-01-19 07:04:05,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4664 transitions. [2022-01-19 07:04:05,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:05,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4664 transitions. [2022-01-19 07:04:05,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.82758620689654) internal successors, (4664), 29 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:05,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:05,387 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:05,387 INFO L186 Difference]: Start difference. First operand has 546 places, 428 transitions, 5834 flow. Second operand 29 states and 4664 transitions. [2022-01-19 07:04:05,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 551 transitions, 9089 flow [2022-01-19 07:04:05,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 551 transitions, 8839 flow, removed 94 selfloop flow, removed 19 redundant places. [2022-01-19 07:04:05,611 INFO L242 Difference]: Finished difference. Result has 545 places, 440 transitions, 6215 flow [2022-01-19 07:04:05,612 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5647, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6215, PETRI_PLACES=545, PETRI_TRANSITIONS=440} [2022-01-19 07:04:05,612 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 358 predicate places. [2022-01-19 07:04:05,612 INFO L470 AbstractCegarLoop]: Abstraction has has 545 places, 440 transitions, 6215 flow [2022-01-19 07:04:05,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:05,612 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:05,612 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:05,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-01-19 07:04:05,613 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:05,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:05,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1351209000, now seen corresponding path program 36 times [2022-01-19 07:04:05,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:05,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184940698] [2022-01-19 07:04:05,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:05,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:05,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:05,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:05,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184940698] [2022-01-19 07:04:05,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184940698] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:05,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:05,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:05,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766007316] [2022-01-19 07:04:05,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:05,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:05,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:05,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:05,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:05,736 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:05,737 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 440 transitions, 6215 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:05,737 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:05,737 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:05,737 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:07,051 INFO L129 PetriNetUnfolder]: 821/2920 cut-off events. [2022-01-19 07:04:07,052 INFO L130 PetriNetUnfolder]: For 56594/56615 co-relation queries the response was YES. [2022-01-19 07:04:07,102 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18257 conditions, 2920 events. 821/2920 cut-off events. For 56594/56615 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 22951 event pairs, 370 based on Foata normal form. 7/2831 useless extension candidates. Maximal degree in co-relation 18056. Up to 912 conditions per place. [2022-01-19 07:04:07,112 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 281 selfloop transitions, 118 changer transitions 90/630 dead transitions. [2022-01-19 07:04:07,112 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 630 transitions, 11404 flow [2022-01-19 07:04:07,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-19 07:04:07,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-01-19 07:04:07,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7025 transitions. [2022-01-19 07:04:07,115 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7602813852813853 [2022-01-19 07:04:07,115 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7025 transitions. [2022-01-19 07:04:07,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7025 transitions. [2022-01-19 07:04:07,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:07,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7025 transitions. [2022-01-19 07:04:07,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.6590909090909) internal successors, (7025), 44 states have internal predecessors, (7025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:07,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:07,123 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:07,124 INFO L186 Difference]: Start difference. First operand has 545 places, 440 transitions, 6215 flow. Second operand 44 states and 7025 transitions. [2022-01-19 07:04:07,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 630 transitions, 11404 flow [2022-01-19 07:04:07,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 630 transitions, 11006 flow, removed 81 selfloop flow, removed 14 redundant places. [2022-01-19 07:04:07,380 INFO L242 Difference]: Finished difference. Result has 593 places, 462 transitions, 6878 flow [2022-01-19 07:04:07,381 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5965, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=6878, PETRI_PLACES=593, PETRI_TRANSITIONS=462} [2022-01-19 07:04:07,381 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 406 predicate places. [2022-01-19 07:04:07,381 INFO L470 AbstractCegarLoop]: Abstraction has has 593 places, 462 transitions, 6878 flow [2022-01-19 07:04:07,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:07,381 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:07,381 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:07,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-01-19 07:04:07,382 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:07,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:07,382 INFO L85 PathProgramCache]: Analyzing trace with hash -700806868, now seen corresponding path program 37 times [2022-01-19 07:04:07,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:07,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909224461] [2022-01-19 07:04:07,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:07,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:07,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:07,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:07,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:07,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909224461] [2022-01-19 07:04:07,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909224461] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:07,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:07,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:07,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352328790] [2022-01-19 07:04:07,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:07,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:07,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:07,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:07,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:07,505 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:07,505 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 462 transitions, 6878 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:07,505 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:07,505 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:07,505 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:08,688 INFO L129 PetriNetUnfolder]: 827/2892 cut-off events. [2022-01-19 07:04:08,688 INFO L130 PetriNetUnfolder]: For 62456/62477 co-relation queries the response was YES. [2022-01-19 07:04:08,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18931 conditions, 2892 events. 827/2892 cut-off events. For 62456/62477 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 22525 event pairs, 395 based on Foata normal form. 7/2795 useless extension candidates. Maximal degree in co-relation 18705. Up to 936 conditions per place. [2022-01-19 07:04:08,741 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 260 selfloop transitions, 129 changer transitions 57/587 dead transitions. [2022-01-19 07:04:08,741 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 587 transitions, 10557 flow [2022-01-19 07:04:08,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:04:08,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:04:08,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4823 transitions. [2022-01-19 07:04:08,743 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655555555555555 [2022-01-19 07:04:08,743 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4823 transitions. [2022-01-19 07:04:08,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4823 transitions. [2022-01-19 07:04:08,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:08,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4823 transitions. [2022-01-19 07:04:08,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.76666666666668) internal successors, (4823), 30 states have internal predecessors, (4823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:08,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:08,749 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:08,749 INFO L186 Difference]: Start difference. First operand has 593 places, 462 transitions, 6878 flow. Second operand 30 states and 4823 transitions. [2022-01-19 07:04:08,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 591 places, 587 transitions, 10557 flow [2022-01-19 07:04:09,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 558 places, 587 transitions, 10021 flow, removed 189 selfloop flow, removed 33 redundant places. [2022-01-19 07:04:09,034 INFO L242 Difference]: Finished difference. Result has 572 places, 479 transitions, 7405 flow [2022-01-19 07:04:09,035 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6598, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7405, PETRI_PLACES=572, PETRI_TRANSITIONS=479} [2022-01-19 07:04:09,035 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 385 predicate places. [2022-01-19 07:04:09,035 INFO L470 AbstractCegarLoop]: Abstraction has has 572 places, 479 transitions, 7405 flow [2022-01-19 07:04:09,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:09,035 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:09,035 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:09,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-01-19 07:04:09,035 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:09,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:09,036 INFO L85 PathProgramCache]: Analyzing trace with hash 62022254, now seen corresponding path program 38 times [2022-01-19 07:04:09,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:09,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753744557] [2022-01-19 07:04:09,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:09,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:09,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:09,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:09,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753744557] [2022-01-19 07:04:09,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753744557] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:09,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:09,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:09,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162655084] [2022-01-19 07:04:09,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:09,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:09,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:09,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:09,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:09,139 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:09,140 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 479 transitions, 7405 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:09,140 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:09,140 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:09,140 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:10,302 INFO L129 PetriNetUnfolder]: 834/2924 cut-off events. [2022-01-19 07:04:10,302 INFO L130 PetriNetUnfolder]: For 60697/60718 co-relation queries the response was YES. [2022-01-19 07:04:10,351 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18876 conditions, 2924 events. 834/2924 cut-off events. For 60697/60718 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 22818 event pairs, 411 based on Foata normal form. 7/2828 useless extension candidates. Maximal degree in co-relation 18666. Up to 940 conditions per place. [2022-01-19 07:04:10,361 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 273 selfloop transitions, 136 changer transitions 60/610 dead transitions. [2022-01-19 07:04:10,362 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 610 transitions, 11180 flow [2022-01-19 07:04:10,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:04:10,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:04:10,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4819 transitions. [2022-01-19 07:04:10,364 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7649206349206349 [2022-01-19 07:04:10,364 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4819 transitions. [2022-01-19 07:04:10,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4819 transitions. [2022-01-19 07:04:10,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:10,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4819 transitions. [2022-01-19 07:04:10,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.63333333333333) internal successors, (4819), 30 states have internal predecessors, (4819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:10,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:10,370 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:10,370 INFO L186 Difference]: Start difference. First operand has 572 places, 479 transitions, 7405 flow. Second operand 30 states and 4819 transitions. [2022-01-19 07:04:10,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 610 transitions, 11180 flow [2022-01-19 07:04:10,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 610 transitions, 10853 flow, removed 106 selfloop flow, removed 11 redundant places. [2022-01-19 07:04:10,661 INFO L242 Difference]: Finished difference. Result has 590 places, 494 transitions, 7948 flow [2022-01-19 07:04:10,661 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7178, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7948, PETRI_PLACES=590, PETRI_TRANSITIONS=494} [2022-01-19 07:04:10,661 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 403 predicate places. [2022-01-19 07:04:10,661 INFO L470 AbstractCegarLoop]: Abstraction has has 590 places, 494 transitions, 7948 flow [2022-01-19 07:04:10,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:10,662 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:10,662 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:10,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-01-19 07:04:10,662 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:10,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:10,662 INFO L85 PathProgramCache]: Analyzing trace with hash -843806286, now seen corresponding path program 39 times [2022-01-19 07:04:10,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:10,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248134258] [2022-01-19 07:04:10,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:10,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:10,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:10,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:10,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248134258] [2022-01-19 07:04:10,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248134258] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:10,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:10,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:10,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557526071] [2022-01-19 07:04:10,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:10,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:10,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:10,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:10,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:10,779 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:10,780 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 494 transitions, 7948 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:10,780 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:10,780 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:10,780 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:12,110 INFO L129 PetriNetUnfolder]: 839/2959 cut-off events. [2022-01-19 07:04:12,110 INFO L130 PetriNetUnfolder]: For 62363/62384 co-relation queries the response was YES. [2022-01-19 07:04:12,159 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19136 conditions, 2959 events. 839/2959 cut-off events. For 62363/62384 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 23261 event pairs, 372 based on Foata normal form. 7/2868 useless extension candidates. Maximal degree in co-relation 18919. Up to 932 conditions per place. [2022-01-19 07:04:12,169 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 287 selfloop transitions, 141 changer transitions 82/651 dead transitions. [2022-01-19 07:04:12,169 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 651 transitions, 12242 flow [2022-01-19 07:04:12,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 07:04:12,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 07:04:12,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7335 transitions. [2022-01-19 07:04:12,173 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7593167701863354 [2022-01-19 07:04:12,173 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7335 transitions. [2022-01-19 07:04:12,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7335 transitions. [2022-01-19 07:04:12,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:12,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7335 transitions. [2022-01-19 07:04:12,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.45652173913044) internal successors, (7335), 46 states have internal predecessors, (7335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:12,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:12,182 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:12,182 INFO L186 Difference]: Start difference. First operand has 590 places, 494 transitions, 7948 flow. Second operand 46 states and 7335 transitions. [2022-01-19 07:04:12,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 651 transitions, 12242 flow [2022-01-19 07:04:12,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 651 transitions, 11966 flow, removed 77 selfloop flow, removed 13 redundant places. [2022-01-19 07:04:12,510 INFO L242 Difference]: Finished difference. Result has 640 places, 502 transitions, 8332 flow [2022-01-19 07:04:12,510 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7738, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=8332, PETRI_PLACES=640, PETRI_TRANSITIONS=502} [2022-01-19 07:04:12,511 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 453 predicate places. [2022-01-19 07:04:12,511 INFO L470 AbstractCegarLoop]: Abstraction has has 640 places, 502 transitions, 8332 flow [2022-01-19 07:04:12,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:12,511 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:12,511 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:12,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-01-19 07:04:12,511 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:12,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:12,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1801851900, now seen corresponding path program 40 times [2022-01-19 07:04:12,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:12,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492272164] [2022-01-19 07:04:12,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:12,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:12,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:12,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:12,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492272164] [2022-01-19 07:04:12,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492272164] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:12,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:12,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:12,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377145904] [2022-01-19 07:04:12,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:12,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:12,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:12,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:12,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:12,628 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:12,628 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 640 places, 502 transitions, 8332 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:12,628 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:12,628 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:12,628 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:14,016 INFO L129 PetriNetUnfolder]: 839/2965 cut-off events. [2022-01-19 07:04:14,016 INFO L130 PetriNetUnfolder]: For 68344/68365 co-relation queries the response was YES. [2022-01-19 07:04:14,057 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19609 conditions, 2965 events. 839/2965 cut-off events. For 68344/68365 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 23282 event pairs, 416 based on Foata normal form. 7/2870 useless extension candidates. Maximal degree in co-relation 19369. Up to 944 conditions per place. [2022-01-19 07:04:14,066 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 280 selfloop transitions, 142 changer transitions 71/634 dead transitions. [2022-01-19 07:04:14,066 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 644 places, 634 transitions, 12218 flow [2022-01-19 07:04:14,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:04:14,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:04:14,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6075 transitions. [2022-01-19 07:04:14,069 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7612781954887218 [2022-01-19 07:04:14,069 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6075 transitions. [2022-01-19 07:04:14,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6075 transitions. [2022-01-19 07:04:14,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:14,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6075 transitions. [2022-01-19 07:04:14,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.8684210526316) internal successors, (6075), 38 states have internal predecessors, (6075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:14,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:14,076 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:14,076 INFO L186 Difference]: Start difference. First operand has 640 places, 502 transitions, 8332 flow. Second operand 38 states and 6075 transitions. [2022-01-19 07:04:14,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 644 places, 634 transitions, 12218 flow [2022-01-19 07:04:14,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 613 places, 634 transitions, 11934 flow, removed 88 selfloop flow, removed 31 redundant places. [2022-01-19 07:04:14,402 INFO L242 Difference]: Finished difference. Result has 636 places, 510 transitions, 8751 flow [2022-01-19 07:04:14,402 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8139, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8751, PETRI_PLACES=636, PETRI_TRANSITIONS=510} [2022-01-19 07:04:14,402 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 449 predicate places. [2022-01-19 07:04:14,402 INFO L470 AbstractCegarLoop]: Abstraction has has 636 places, 510 transitions, 8751 flow [2022-01-19 07:04:14,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:14,403 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:14,403 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:14,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-01-19 07:04:14,403 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:14,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:14,403 INFO L85 PathProgramCache]: Analyzing trace with hash 571628762, now seen corresponding path program 41 times [2022-01-19 07:04:14,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:14,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309468795] [2022-01-19 07:04:14,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:14,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:14,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:14,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:14,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309468795] [2022-01-19 07:04:14,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309468795] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:14,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:14,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:14,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809121220] [2022-01-19 07:04:14,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:14,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:14,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:14,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:14,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:14,518 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:14,518 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 636 places, 510 transitions, 8751 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:14,518 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:14,518 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:14,519 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:15,630 INFO L129 PetriNetUnfolder]: 816/2798 cut-off events. [2022-01-19 07:04:15,630 INFO L130 PetriNetUnfolder]: For 65271/65295 co-relation queries the response was YES. [2022-01-19 07:04:15,679 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18914 conditions, 2798 events. 816/2798 cut-off events. For 65271/65295 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 21588 event pairs, 397 based on Foata normal form. 7/2704 useless extension candidates. Maximal degree in co-relation 18679. Up to 942 conditions per place. [2022-01-19 07:04:15,688 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 271 selfloop transitions, 125 changer transitions 62/599 dead transitions. [2022-01-19 07:04:15,688 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 599 transitions, 11408 flow [2022-01-19 07:04:15,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 07:04:15,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 07:04:15,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4494 transitions. [2022-01-19 07:04:15,690 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2022-01-19 07:04:15,690 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4494 transitions. [2022-01-19 07:04:15,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4494 transitions. [2022-01-19 07:04:15,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:15,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4494 transitions. [2022-01-19 07:04:15,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.5) internal successors, (4494), 28 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:15,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:15,696 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:15,696 INFO L186 Difference]: Start difference. First operand has 636 places, 510 transitions, 8751 flow. Second operand 28 states and 4494 transitions. [2022-01-19 07:04:15,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 599 transitions, 11408 flow [2022-01-19 07:04:16,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 599 transitions, 11138 flow, removed 66 selfloop flow, removed 22 redundant places. [2022-01-19 07:04:16,108 INFO L242 Difference]: Finished difference. Result has 626 places, 486 transitions, 8139 flow [2022-01-19 07:04:16,108 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8529, PETRI_DIFFERENCE_MINUEND_PLACES=590, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=8139, PETRI_PLACES=626, PETRI_TRANSITIONS=486} [2022-01-19 07:04:16,109 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 439 predicate places. [2022-01-19 07:04:16,109 INFO L470 AbstractCegarLoop]: Abstraction has has 626 places, 486 transitions, 8139 flow [2022-01-19 07:04:16,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:16,109 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:16,109 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:16,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-01-19 07:04:16,109 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:16,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:16,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1369805108, now seen corresponding path program 42 times [2022-01-19 07:04:16,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:16,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993716429] [2022-01-19 07:04:16,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:16,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:16,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:16,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:16,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:16,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993716429] [2022-01-19 07:04:16,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993716429] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:16,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:16,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:16,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882873719] [2022-01-19 07:04:16,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:16,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:16,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:16,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:16,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:16,235 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:16,236 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 626 places, 486 transitions, 8139 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:16,236 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:16,236 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:16,236 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:17,471 INFO L129 PetriNetUnfolder]: 810/2790 cut-off events. [2022-01-19 07:04:17,471 INFO L130 PetriNetUnfolder]: For 65006/65030 co-relation queries the response was YES. [2022-01-19 07:04:17,514 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18656 conditions, 2790 events. 810/2790 cut-off events. For 65006/65030 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 21411 event pairs, 382 based on Foata normal form. 7/2700 useless extension candidates. Maximal degree in co-relation 18430. Up to 938 conditions per place. [2022-01-19 07:04:17,523 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 268 selfloop transitions, 137 changer transitions 61/607 dead transitions. [2022-01-19 07:04:17,523 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 607 transitions, 11598 flow [2022-01-19 07:04:17,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:04:17,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:04:17,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4816 transitions. [2022-01-19 07:04:17,525 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7644444444444445 [2022-01-19 07:04:17,525 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4816 transitions. [2022-01-19 07:04:17,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4816 transitions. [2022-01-19 07:04:17,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:17,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4816 transitions. [2022-01-19 07:04:17,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.53333333333333) internal successors, (4816), 30 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:17,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:17,531 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:17,531 INFO L186 Difference]: Start difference. First operand has 626 places, 486 transitions, 8139 flow. Second operand 30 states and 4816 transitions. [2022-01-19 07:04:17,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 607 transitions, 11598 flow [2022-01-19 07:04:17,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 591 places, 607 transitions, 10942 flow, removed 36 selfloop flow, removed 31 redundant places. [2022-01-19 07:04:17,829 INFO L242 Difference]: Finished difference. Result has 604 places, 492 transitions, 8074 flow [2022-01-19 07:04:17,830 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7579, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=8074, PETRI_PLACES=604, PETRI_TRANSITIONS=492} [2022-01-19 07:04:17,830 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 417 predicate places. [2022-01-19 07:04:17,830 INFO L470 AbstractCegarLoop]: Abstraction has has 604 places, 492 transitions, 8074 flow [2022-01-19 07:04:17,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:17,830 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:17,830 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:17,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-01-19 07:04:17,830 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:17,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:17,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1122114580, now seen corresponding path program 43 times [2022-01-19 07:04:17,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:17,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368831872] [2022-01-19 07:04:17,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:17,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:17,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:17,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:17,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:17,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368831872] [2022-01-19 07:04:17,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368831872] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:17,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:17,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:17,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273532711] [2022-01-19 07:04:17,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:17,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:17,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:17,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:17,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:17,955 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:17,956 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 492 transitions, 8074 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:17,956 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:17,956 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:17,956 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:19,061 INFO L129 PetriNetUnfolder]: 816/2882 cut-off events. [2022-01-19 07:04:19,061 INFO L130 PetriNetUnfolder]: For 62522/62543 co-relation queries the response was YES. [2022-01-19 07:04:19,107 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18751 conditions, 2882 events. 816/2882 cut-off events. For 62522/62543 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 22459 event pairs, 385 based on Foata normal form. 7/2786 useless extension candidates. Maximal degree in co-relation 18530. Up to 942 conditions per place. [2022-01-19 07:04:19,117 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 273 selfloop transitions, 142 changer transitions 56/612 dead transitions. [2022-01-19 07:04:19,117 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 612 transitions, 11604 flow [2022-01-19 07:04:19,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:04:19,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:04:19,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4662 transitions. [2022-01-19 07:04:19,119 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655172413793103 [2022-01-19 07:04:19,119 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4662 transitions. [2022-01-19 07:04:19,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4662 transitions. [2022-01-19 07:04:19,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:19,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4662 transitions. [2022-01-19 07:04:19,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.75862068965517) internal successors, (4662), 29 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:19,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:19,125 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:19,125 INFO L186 Difference]: Start difference. First operand has 604 places, 492 transitions, 8074 flow. Second operand 29 states and 4662 transitions. [2022-01-19 07:04:19,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 612 transitions, 11604 flow [2022-01-19 07:04:19,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 604 places, 612 transitions, 11361 flow, removed 63 selfloop flow, removed 13 redundant places. [2022-01-19 07:04:19,451 INFO L242 Difference]: Finished difference. Result has 618 places, 504 transitions, 8570 flow [2022-01-19 07:04:19,451 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7878, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=8570, PETRI_PLACES=618, PETRI_TRANSITIONS=504} [2022-01-19 07:04:19,451 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 431 predicate places. [2022-01-19 07:04:19,451 INFO L470 AbstractCegarLoop]: Abstraction has has 618 places, 504 transitions, 8570 flow [2022-01-19 07:04:19,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:19,452 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:19,452 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:19,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-01-19 07:04:19,452 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:19,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:19,452 INFO L85 PathProgramCache]: Analyzing trace with hash -745564998, now seen corresponding path program 44 times [2022-01-19 07:04:19,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:19,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198680410] [2022-01-19 07:04:19,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:19,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:19,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:19,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:19,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198680410] [2022-01-19 07:04:19,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198680410] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:19,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:19,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:19,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060707588] [2022-01-19 07:04:19,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:19,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:19,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:19,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:19,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:19,557 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:19,558 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 618 places, 504 transitions, 8570 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:19,558 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:19,558 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:19,558 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:20,858 INFO L129 PetriNetUnfolder]: 816/2919 cut-off events. [2022-01-19 07:04:20,858 INFO L130 PetriNetUnfolder]: For 65829/65850 co-relation queries the response was YES. [2022-01-19 07:04:20,901 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18953 conditions, 2919 events. 816/2919 cut-off events. For 65829/65850 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 22882 event pairs, 416 based on Foata normal form. 7/2823 useless extension candidates. Maximal degree in co-relation 18728. Up to 938 conditions per place. [2022-01-19 07:04:20,910 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 277 selfloop transitions, 131 changer transitions 71/620 dead transitions. [2022-01-19 07:04:20,910 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 640 places, 620 transitions, 11986 flow [2022-01-19 07:04:20,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 07:04:20,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 07:04:20,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5918 transitions. [2022-01-19 07:04:20,913 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616473616473617 [2022-01-19 07:04:20,913 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5918 transitions. [2022-01-19 07:04:20,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5918 transitions. [2022-01-19 07:04:20,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:20,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5918 transitions. [2022-01-19 07:04:20,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 159.94594594594594) internal successors, (5918), 37 states have internal predecessors, (5918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:20,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:20,920 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:20,920 INFO L186 Difference]: Start difference. First operand has 618 places, 504 transitions, 8570 flow. Second operand 37 states and 5918 transitions. [2022-01-19 07:04:20,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 640 places, 620 transitions, 11986 flow [2022-01-19 07:04:21,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 627 places, 620 transitions, 11665 flow, removed 81 selfloop flow, removed 13 redundant places. [2022-01-19 07:04:21,227 INFO L242 Difference]: Finished difference. Result has 646 places, 505 transitions, 8655 flow [2022-01-19 07:04:21,227 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8292, PETRI_DIFFERENCE_MINUEND_PLACES=591, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=8655, PETRI_PLACES=646, PETRI_TRANSITIONS=505} [2022-01-19 07:04:21,227 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 459 predicate places. [2022-01-19 07:04:21,228 INFO L470 AbstractCegarLoop]: Abstraction has has 646 places, 505 transitions, 8655 flow [2022-01-19 07:04:21,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:21,228 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:21,228 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:21,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-01-19 07:04:21,228 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:21,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:21,228 INFO L85 PathProgramCache]: Analyzing trace with hash 608513532, now seen corresponding path program 45 times [2022-01-19 07:04:21,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:21,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804275741] [2022-01-19 07:04:21,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:21,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:21,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:21,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:21,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:21,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804275741] [2022-01-19 07:04:21,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804275741] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:21,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:21,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:21,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905883397] [2022-01-19 07:04:21,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:21,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:21,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:21,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:21,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:21,344 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:21,345 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 646 places, 505 transitions, 8655 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:21,345 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:21,345 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:21,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:22,478 INFO L129 PetriNetUnfolder]: 801/2861 cut-off events. [2022-01-19 07:04:22,478 INFO L130 PetriNetUnfolder]: For 66232/66253 co-relation queries the response was YES. [2022-01-19 07:04:22,526 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18747 conditions, 2861 events. 801/2861 cut-off events. For 66232/66253 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 22404 event pairs, 391 based on Foata normal form. 7/2765 useless extension candidates. Maximal degree in co-relation 18511. Up to 946 conditions per place. [2022-01-19 07:04:22,535 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 274 selfloop transitions, 120 changer transitions 60/595 dead transitions. [2022-01-19 07:04:22,536 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 651 places, 595 transitions, 11432 flow [2022-01-19 07:04:22,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:04:22,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:04:22,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4655 transitions. [2022-01-19 07:04:22,538 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2022-01-19 07:04:22,538 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4655 transitions. [2022-01-19 07:04:22,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4655 transitions. [2022-01-19 07:04:22,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:22,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4655 transitions. [2022-01-19 07:04:22,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.51724137931035) internal successors, (4655), 29 states have internal predecessors, (4655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:22,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:22,543 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:22,543 INFO L186 Difference]: Start difference. First operand has 646 places, 505 transitions, 8655 flow. Second operand 29 states and 4655 transitions. [2022-01-19 07:04:22,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 651 places, 595 transitions, 11432 flow [2022-01-19 07:04:22,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 630 places, 595 transitions, 11060 flow, removed 94 selfloop flow, removed 21 redundant places. [2022-01-19 07:04:22,873 INFO L242 Difference]: Finished difference. Result has 641 places, 492 transitions, 8314 flow [2022-01-19 07:04:22,874 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8405, PETRI_DIFFERENCE_MINUEND_PLACES=602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=8314, PETRI_PLACES=641, PETRI_TRANSITIONS=492} [2022-01-19 07:04:22,874 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 454 predicate places. [2022-01-19 07:04:22,874 INFO L470 AbstractCegarLoop]: Abstraction has has 641 places, 492 transitions, 8314 flow [2022-01-19 07:04:22,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:22,874 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:22,874 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:22,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-01-19 07:04:22,875 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:22,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:22,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1167543244, now seen corresponding path program 46 times [2022-01-19 07:04:22,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:22,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144238289] [2022-01-19 07:04:22,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:22,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:22,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:22,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:22,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144238289] [2022-01-19 07:04:22,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144238289] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:22,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:22,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:22,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155028844] [2022-01-19 07:04:22,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:22,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:22,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:22,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:22,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:22,981 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:22,982 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 641 places, 492 transitions, 8314 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:22,982 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:22,982 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:22,982 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:24,072 INFO L129 PetriNetUnfolder]: 809/2812 cut-off events. [2022-01-19 07:04:24,072 INFO L130 PetriNetUnfolder]: For 66775/66799 co-relation queries the response was YES. [2022-01-19 07:04:24,120 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18867 conditions, 2812 events. 809/2812 cut-off events. For 66775/66799 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 21839 event pairs, 373 based on Foata normal form. 7/2719 useless extension candidates. Maximal degree in co-relation 18637. Up to 948 conditions per place. [2022-01-19 07:04:24,129 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 281 selfloop transitions, 141 changer transitions 61/624 dead transitions. [2022-01-19 07:04:24,129 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 644 places, 624 transitions, 12328 flow [2022-01-19 07:04:24,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:04:24,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:04:24,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4817 transitions. [2022-01-19 07:04:24,131 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646031746031746 [2022-01-19 07:04:24,131 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4817 transitions. [2022-01-19 07:04:24,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4817 transitions. [2022-01-19 07:04:24,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:24,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4817 transitions. [2022-01-19 07:04:24,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.56666666666666) internal successors, (4817), 30 states have internal predecessors, (4817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:24,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:24,137 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:24,137 INFO L186 Difference]: Start difference. First operand has 641 places, 492 transitions, 8314 flow. Second operand 30 states and 4817 transitions. [2022-01-19 07:04:24,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 644 places, 624 transitions, 12328 flow [2022-01-19 07:04:24,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 615 places, 624 transitions, 11805 flow, removed 41 selfloop flow, removed 29 redundant places. [2022-01-19 07:04:24,461 INFO L242 Difference]: Finished difference. Result has 628 places, 509 transitions, 8757 flow [2022-01-19 07:04:24,461 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7914, PETRI_DIFFERENCE_MINUEND_PLACES=586, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=8757, PETRI_PLACES=628, PETRI_TRANSITIONS=509} [2022-01-19 07:04:24,461 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 441 predicate places. [2022-01-19 07:04:24,461 INFO L470 AbstractCegarLoop]: Abstraction has has 628 places, 509 transitions, 8757 flow [2022-01-19 07:04:24,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:24,462 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:24,462 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:24,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-01-19 07:04:24,462 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:24,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:24,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1913108916, now seen corresponding path program 47 times [2022-01-19 07:04:24,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:24,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448218495] [2022-01-19 07:04:24,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:24,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:24,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:24,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:24,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448218495] [2022-01-19 07:04:24,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448218495] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:24,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:24,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:24,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612635033] [2022-01-19 07:04:24,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:24,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:24,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:24,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:24,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:24,569 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:24,570 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 628 places, 509 transitions, 8757 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:24,570 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:24,570 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:24,570 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:25,908 INFO L129 PetriNetUnfolder]: 815/2940 cut-off events. [2022-01-19 07:04:25,908 INFO L130 PetriNetUnfolder]: For 67056/67077 co-relation queries the response was YES. [2022-01-19 07:04:26,029 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19083 conditions, 2940 events. 815/2940 cut-off events. For 67056/67077 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 23318 event pairs, 373 based on Foata normal form. 7/2851 useless extension candidates. Maximal degree in co-relation 18856. Up to 924 conditions per place. [2022-01-19 07:04:26,038 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 306 selfloop transitions, 127 changer transitions 81/655 dead transitions. [2022-01-19 07:04:26,038 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 657 places, 655 transitions, 13114 flow [2022-01-19 07:04:26,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 07:04:26,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 07:04:26,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7186 transitions. [2022-01-19 07:04:26,041 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7604232804232804 [2022-01-19 07:04:26,041 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7186 transitions. [2022-01-19 07:04:26,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7186 transitions. [2022-01-19 07:04:26,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:26,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7186 transitions. [2022-01-19 07:04:26,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.6888888888889) internal successors, (7186), 45 states have internal predecessors, (7186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:26,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:26,050 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:26,050 INFO L186 Difference]: Start difference. First operand has 628 places, 509 transitions, 8757 flow. Second operand 45 states and 7186 transitions. [2022-01-19 07:04:26,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 657 places, 655 transitions, 13114 flow [2022-01-19 07:04:26,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 641 places, 655 transitions, 12721 flow, removed 86 selfloop flow, removed 16 redundant places. [2022-01-19 07:04:26,376 INFO L242 Difference]: Finished difference. Result has 674 places, 513 transitions, 8966 flow [2022-01-19 07:04:26,376 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8433, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=8966, PETRI_PLACES=674, PETRI_TRANSITIONS=513} [2022-01-19 07:04:26,377 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 487 predicate places. [2022-01-19 07:04:26,377 INFO L470 AbstractCegarLoop]: Abstraction has has 674 places, 513 transitions, 8966 flow [2022-01-19 07:04:26,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:26,377 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:26,377 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:26,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-01-19 07:04:26,377 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:26,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:26,377 INFO L85 PathProgramCache]: Analyzing trace with hash 2129658, now seen corresponding path program 48 times [2022-01-19 07:04:26,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:26,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324731099] [2022-01-19 07:04:26,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:26,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:26,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:26,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:26,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:26,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324731099] [2022-01-19 07:04:26,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324731099] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:26,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:26,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:26,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160161931] [2022-01-19 07:04:26,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:26,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:26,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:26,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:26,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:26,496 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:26,497 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 674 places, 513 transitions, 8966 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:26,497 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:26,497 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:26,497 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:27,616 INFO L129 PetriNetUnfolder]: 779/2793 cut-off events. [2022-01-19 07:04:27,616 INFO L130 PetriNetUnfolder]: For 65646/65667 co-relation queries the response was YES. [2022-01-19 07:04:27,677 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18235 conditions, 2793 events. 779/2793 cut-off events. For 65646/65667 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 21657 event pairs, 370 based on Foata normal form. 7/2701 useless extension candidates. Maximal degree in co-relation 17987. Up to 932 conditions per place. [2022-01-19 07:04:27,688 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 268 selfloop transitions, 113 changer transitions 64/586 dead transitions. [2022-01-19 07:04:27,688 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 586 transitions, 11220 flow [2022-01-19 07:04:27,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 07:04:27,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 07:04:27,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4333 transitions. [2022-01-19 07:04:27,690 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7641975308641975 [2022-01-19 07:04:27,690 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4333 transitions. [2022-01-19 07:04:27,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4333 transitions. [2022-01-19 07:04:27,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:27,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4333 transitions. [2022-01-19 07:04:27,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 160.4814814814815) internal successors, (4333), 27 states have internal predecessors, (4333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:27,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:27,695 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:27,695 INFO L186 Difference]: Start difference. First operand has 674 places, 513 transitions, 8966 flow. Second operand 27 states and 4333 transitions. [2022-01-19 07:04:27,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 586 transitions, 11220 flow [2022-01-19 07:04:28,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 635 places, 586 transitions, 10815 flow, removed 128 selfloop flow, removed 33 redundant places. [2022-01-19 07:04:28,048 INFO L242 Difference]: Finished difference. Result has 642 places, 476 transitions, 7901 flow [2022-01-19 07:04:28,048 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8646, PETRI_DIFFERENCE_MINUEND_PLACES=609, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=7901, PETRI_PLACES=642, PETRI_TRANSITIONS=476} [2022-01-19 07:04:28,048 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 455 predicate places. [2022-01-19 07:04:28,048 INFO L470 AbstractCegarLoop]: Abstraction has has 642 places, 476 transitions, 7901 flow [2022-01-19 07:04:28,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:28,049 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:28,049 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:28,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-01-19 07:04:28,049 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:28,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:28,049 INFO L85 PathProgramCache]: Analyzing trace with hash -694843082, now seen corresponding path program 49 times [2022-01-19 07:04:28,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:28,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067070501] [2022-01-19 07:04:28,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:28,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:28,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:28,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:28,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067070501] [2022-01-19 07:04:28,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067070501] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:28,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:28,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:28,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113223032] [2022-01-19 07:04:28,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:28,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:28,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:28,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:28,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:28,155 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:28,156 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 642 places, 476 transitions, 7901 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:28,156 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:28,156 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:28,156 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:29,199 INFO L129 PetriNetUnfolder]: 780/2789 cut-off events. [2022-01-19 07:04:29,199 INFO L130 PetriNetUnfolder]: For 63789/63810 co-relation queries the response was YES. [2022-01-19 07:04:29,237 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17930 conditions, 2789 events. 780/2789 cut-off events. For 63789/63810 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 21627 event pairs, 367 based on Foata normal form. 7/2697 useless extension candidates. Maximal degree in co-relation 17705. Up to 934 conditions per place. [2022-01-19 07:04:29,245 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 257 selfloop transitions, 138 changer transitions 59/595 dead transitions. [2022-01-19 07:04:29,245 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 628 places, 595 transitions, 11423 flow [2022-01-19 07:04:29,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 07:04:29,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 07:04:29,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4500 transitions. [2022-01-19 07:04:29,247 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7653061224489796 [2022-01-19 07:04:29,247 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4500 transitions. [2022-01-19 07:04:29,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4500 transitions. [2022-01-19 07:04:29,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:29,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4500 transitions. [2022-01-19 07:04:29,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.71428571428572) internal successors, (4500), 28 states have internal predecessors, (4500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:29,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:29,253 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:29,253 INFO L186 Difference]: Start difference. First operand has 642 places, 476 transitions, 7901 flow. Second operand 28 states and 4500 transitions. [2022-01-19 07:04:29,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 628 places, 595 transitions, 11423 flow [2022-01-19 07:04:29,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 591 places, 595 transitions, 10527 flow, removed 45 selfloop flow, removed 37 redundant places. [2022-01-19 07:04:29,527 INFO L242 Difference]: Finished difference. Result has 603 places, 484 transitions, 7746 flow [2022-01-19 07:04:29,528 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7223, PETRI_DIFFERENCE_MINUEND_PLACES=564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=7746, PETRI_PLACES=603, PETRI_TRANSITIONS=484} [2022-01-19 07:04:29,528 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 416 predicate places. [2022-01-19 07:04:29,528 INFO L470 AbstractCegarLoop]: Abstraction has has 603 places, 484 transitions, 7746 flow [2022-01-19 07:04:29,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:29,528 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:29,528 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:29,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-01-19 07:04:29,528 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:29,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:29,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1403431284, now seen corresponding path program 50 times [2022-01-19 07:04:29,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:29,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742644788] [2022-01-19 07:04:29,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:29,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:29,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:29,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:29,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742644788] [2022-01-19 07:04:29,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742644788] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:29,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:29,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:29,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155947102] [2022-01-19 07:04:29,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:29,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:29,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:29,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:29,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:29,637 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:29,638 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 484 transitions, 7746 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:29,638 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:29,638 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:29,638 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:31,049 INFO L129 PetriNetUnfolder]: 809/2824 cut-off events. [2022-01-19 07:04:31,049 INFO L130 PetriNetUnfolder]: For 60327/60351 co-relation queries the response was YES. [2022-01-19 07:04:31,097 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18269 conditions, 2824 events. 809/2824 cut-off events. For 60327/60351 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 21962 event pairs, 381 based on Foata normal form. 7/2733 useless extension candidates. Maximal degree in co-relation 18055. Up to 938 conditions per place. [2022-01-19 07:04:31,108 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 290 selfloop transitions, 128 changer transitions 67/626 dead transitions. [2022-01-19 07:04:31,108 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 626 transitions, 11851 flow [2022-01-19 07:04:31,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:04:31,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:04:31,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6082 transitions. [2022-01-19 07:04:31,112 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7621553884711779 [2022-01-19 07:04:31,112 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6082 transitions. [2022-01-19 07:04:31,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6082 transitions. [2022-01-19 07:04:31,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:31,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6082 transitions. [2022-01-19 07:04:31,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.05263157894737) internal successors, (6082), 38 states have internal predecessors, (6082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:31,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:31,123 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:31,123 INFO L186 Difference]: Start difference. First operand has 603 places, 484 transitions, 7746 flow. Second operand 38 states and 6082 transitions. [2022-01-19 07:04:31,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 627 places, 626 transitions, 11851 flow [2022-01-19 07:04:31,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 626 transitions, 11442 flow, removed 63 selfloop flow, removed 15 redundant places. [2022-01-19 07:04:31,450 INFO L242 Difference]: Finished difference. Result has 636 places, 503 transitions, 8315 flow [2022-01-19 07:04:31,450 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7443, PETRI_DIFFERENCE_MINUEND_PLACES=575, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8315, PETRI_PLACES=636, PETRI_TRANSITIONS=503} [2022-01-19 07:04:31,450 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 449 predicate places. [2022-01-19 07:04:31,450 INFO L470 AbstractCegarLoop]: Abstraction has has 636 places, 503 transitions, 8315 flow [2022-01-19 07:04:31,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:31,451 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:31,451 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:31,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-01-19 07:04:31,451 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:31,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:31,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1968117948, now seen corresponding path program 51 times [2022-01-19 07:04:31,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:31,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691154022] [2022-01-19 07:04:31,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:31,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:31,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:31,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:31,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691154022] [2022-01-19 07:04:31,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691154022] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:31,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:31,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:31,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966350974] [2022-01-19 07:04:31,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:31,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:31,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:31,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:31,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:31,567 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:31,568 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 636 places, 503 transitions, 8315 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:31,568 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:31,568 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:31,568 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:32,936 INFO L129 PetriNetUnfolder]: 779/2778 cut-off events. [2022-01-19 07:04:32,936 INFO L130 PetriNetUnfolder]: For 59813/59834 co-relation queries the response was YES. [2022-01-19 07:04:32,978 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17616 conditions, 2778 events. 779/2778 cut-off events. For 59813/59834 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 21483 event pairs, 376 based on Foata normal form. 7/2683 useless extension candidates. Maximal degree in co-relation 17387. Up to 938 conditions per place. [2022-01-19 07:04:32,986 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 268 selfloop transitions, 98 changer transitions 61/568 dead transitions. [2022-01-19 07:04:32,986 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 641 places, 568 transitions, 10237 flow [2022-01-19 07:04:32,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:04:32,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:04:32,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4801 transitions. [2022-01-19 07:04:32,989 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7620634920634921 [2022-01-19 07:04:32,989 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4801 transitions. [2022-01-19 07:04:32,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4801 transitions. [2022-01-19 07:04:32,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:32,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4801 transitions. [2022-01-19 07:04:32,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.03333333333333) internal successors, (4801), 30 states have internal predecessors, (4801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:32,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:32,995 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:32,995 INFO L186 Difference]: Start difference. First operand has 636 places, 503 transitions, 8315 flow. Second operand 30 states and 4801 transitions. [2022-01-19 07:04:32,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 641 places, 568 transitions, 10237 flow [2022-01-19 07:04:33,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 621 places, 568 transitions, 10004 flow, removed 66 selfloop flow, removed 20 redundant places. [2022-01-19 07:04:33,309 INFO L242 Difference]: Finished difference. Result has 630 places, 467 transitions, 7413 flow [2022-01-19 07:04:33,310 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8109, PETRI_DIFFERENCE_MINUEND_PLACES=592, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7413, PETRI_PLACES=630, PETRI_TRANSITIONS=467} [2022-01-19 07:04:33,310 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 443 predicate places. [2022-01-19 07:04:33,310 INFO L470 AbstractCegarLoop]: Abstraction has has 630 places, 467 transitions, 7413 flow [2022-01-19 07:04:33,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:33,310 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:33,310 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:33,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-01-19 07:04:33,311 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:33,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:33,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1835249110, now seen corresponding path program 52 times [2022-01-19 07:04:33,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:33,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298778080] [2022-01-19 07:04:33,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:33,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:33,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:33,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:33,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298778080] [2022-01-19 07:04:33,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298778080] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:33,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:33,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:33,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927141964] [2022-01-19 07:04:33,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:33,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:33,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:33,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:33,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:33,425 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:33,425 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 630 places, 467 transitions, 7413 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:33,426 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:33,426 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:33,426 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:34,582 INFO L129 PetriNetUnfolder]: 778/2799 cut-off events. [2022-01-19 07:04:34,582 INFO L130 PetriNetUnfolder]: For 60349/60370 co-relation queries the response was YES. [2022-01-19 07:04:34,626 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17551 conditions, 2799 events. 778/2799 cut-off events. For 60349/60370 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 21751 event pairs, 367 based on Foata normal form. 7/2709 useless extension candidates. Maximal degree in co-relation 17330. Up to 920 conditions per place. [2022-01-19 07:04:34,634 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 267 selfloop transitions, 117 changer transitions 68/593 dead transitions. [2022-01-19 07:04:34,634 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 623 places, 593 transitions, 11052 flow [2022-01-19 07:04:34,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 07:04:34,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 07:04:34,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5923 transitions. [2022-01-19 07:04:34,637 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7622908622908623 [2022-01-19 07:04:34,637 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5923 transitions. [2022-01-19 07:04:34,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5923 transitions. [2022-01-19 07:04:34,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:34,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5923 transitions. [2022-01-19 07:04:34,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.0810810810811) internal successors, (5923), 37 states have internal predecessors, (5923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:34,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:34,644 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:34,644 INFO L186 Difference]: Start difference. First operand has 630 places, 467 transitions, 7413 flow. Second operand 37 states and 5923 transitions. [2022-01-19 07:04:34,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 623 places, 593 transitions, 11052 flow [2022-01-19 07:04:34,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 593 transitions, 10272 flow, removed 69 selfloop flow, removed 36 redundant places. [2022-01-19 07:04:34,902 INFO L242 Difference]: Finished difference. Result has 611 places, 471 transitions, 7275 flow [2022-01-19 07:04:34,903 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6811, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=7275, PETRI_PLACES=611, PETRI_TRANSITIONS=471} [2022-01-19 07:04:34,903 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 424 predicate places. [2022-01-19 07:04:34,903 INFO L470 AbstractCegarLoop]: Abstraction has has 611 places, 471 transitions, 7275 flow [2022-01-19 07:04:34,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:34,903 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:34,903 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:34,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-01-19 07:04:34,904 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:34,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:34,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1627569222, now seen corresponding path program 53 times [2022-01-19 07:04:34,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:34,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531676380] [2022-01-19 07:04:34,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:34,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:35,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:35,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:35,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531676380] [2022-01-19 07:04:35,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531676380] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:35,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:35,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:35,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805089274] [2022-01-19 07:04:35,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:35,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:35,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:35,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:35,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:35,009 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:35,010 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 471 transitions, 7275 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:35,010 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:35,010 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:35,010 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:36,066 INFO L129 PetriNetUnfolder]: 769/2693 cut-off events. [2022-01-19 07:04:36,067 INFO L130 PetriNetUnfolder]: For 54266/54290 co-relation queries the response was YES. [2022-01-19 07:04:36,114 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16994 conditions, 2693 events. 769/2693 cut-off events. For 54266/54290 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20545 event pairs, 379 based on Foata normal form. 7/2604 useless extension candidates. Maximal degree in co-relation 16770. Up to 931 conditions per place. [2022-01-19 07:04:36,123 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 264 selfloop transitions, 115 changer transitions 58/578 dead transitions. [2022-01-19 07:04:36,123 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 578 transitions, 10352 flow [2022-01-19 07:04:36,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:04:36,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:04:36,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4819 transitions. [2022-01-19 07:04:36,126 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7649206349206349 [2022-01-19 07:04:36,126 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4819 transitions. [2022-01-19 07:04:36,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4819 transitions. [2022-01-19 07:04:36,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:36,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4819 transitions. [2022-01-19 07:04:36,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.63333333333333) internal successors, (4819), 30 states have internal predecessors, (4819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:36,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:36,132 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:36,132 INFO L186 Difference]: Start difference. First operand has 611 places, 471 transitions, 7275 flow. Second operand 30 states and 4819 transitions. [2022-01-19 07:04:36,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 578 transitions, 10352 flow [2022-01-19 07:04:36,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 594 places, 578 transitions, 10015 flow, removed 94 selfloop flow, removed 23 redundant places. [2022-01-19 07:04:36,410 INFO L242 Difference]: Finished difference. Result has 608 places, 476 transitions, 7470 flow [2022-01-19 07:04:36,410 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7042, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7470, PETRI_PLACES=608, PETRI_TRANSITIONS=476} [2022-01-19 07:04:36,410 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 421 predicate places. [2022-01-19 07:04:36,410 INFO L470 AbstractCegarLoop]: Abstraction has has 608 places, 476 transitions, 7470 flow [2022-01-19 07:04:36,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:36,411 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:36,411 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:36,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-01-19 07:04:36,411 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:36,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:36,411 INFO L85 PathProgramCache]: Analyzing trace with hash 24850180, now seen corresponding path program 54 times [2022-01-19 07:04:36,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:36,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225163079] [2022-01-19 07:04:36,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:36,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:36,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:36,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:36,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225163079] [2022-01-19 07:04:36,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225163079] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:36,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:36,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:36,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590810996] [2022-01-19 07:04:36,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:36,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:36,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:36,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:36,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:36,530 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:36,530 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 476 transitions, 7470 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:36,530 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:36,530 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:36,531 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:37,604 INFO L129 PetriNetUnfolder]: 760/2661 cut-off events. [2022-01-19 07:04:37,605 INFO L130 PetriNetUnfolder]: For 52746/52770 co-relation queries the response was YES. [2022-01-19 07:04:37,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16674 conditions, 2661 events. 760/2661 cut-off events. For 52746/52770 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 20206 event pairs, 379 based on Foata normal form. 7/2571 useless extension candidates. Maximal degree in co-relation 16455. Up to 928 conditions per place. [2022-01-19 07:04:37,655 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 257 selfloop transitions, 108 changer transitions 58/564 dead transitions. [2022-01-19 07:04:37,655 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 564 transitions, 9971 flow [2022-01-19 07:04:37,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:04:37,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:04:37,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4808 transitions. [2022-01-19 07:04:37,657 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7631746031746032 [2022-01-19 07:04:37,657 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4808 transitions. [2022-01-19 07:04:37,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4808 transitions. [2022-01-19 07:04:37,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:37,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4808 transitions. [2022-01-19 07:04:37,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.26666666666668) internal successors, (4808), 30 states have internal predecessors, (4808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:37,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:37,663 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:37,663 INFO L186 Difference]: Start difference. First operand has 608 places, 476 transitions, 7470 flow. Second operand 30 states and 4808 transitions. [2022-01-19 07:04:37,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 564 transitions, 9971 flow [2022-01-19 07:04:37,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 564 transitions, 9678 flow, removed 58 selfloop flow, removed 15 redundant places. [2022-01-19 07:04:37,933 INFO L242 Difference]: Finished difference. Result has 619 places, 464 transitions, 7156 flow [2022-01-19 07:04:37,933 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7218, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7156, PETRI_PLACES=619, PETRI_TRANSITIONS=464} [2022-01-19 07:04:37,933 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 432 predicate places. [2022-01-19 07:04:37,933 INFO L470 AbstractCegarLoop]: Abstraction has has 619 places, 464 transitions, 7156 flow [2022-01-19 07:04:37,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:37,933 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:37,933 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:37,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-01-19 07:04:37,934 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:37,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:37,934 INFO L85 PathProgramCache]: Analyzing trace with hash -616680000, now seen corresponding path program 55 times [2022-01-19 07:04:37,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:37,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784908100] [2022-01-19 07:04:37,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:37,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:37,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:38,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:38,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:38,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784908100] [2022-01-19 07:04:38,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784908100] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:38,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:38,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:38,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768452802] [2022-01-19 07:04:38,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:38,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:38,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:38,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:38,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:38,047 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:38,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 619 places, 464 transitions, 7156 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:38,048 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:38,048 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:38,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:39,053 INFO L129 PetriNetUnfolder]: 759/2663 cut-off events. [2022-01-19 07:04:39,053 INFO L130 PetriNetUnfolder]: For 53404/53428 co-relation queries the response was YES. [2022-01-19 07:04:39,097 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16714 conditions, 2663 events. 759/2663 cut-off events. For 53404/53428 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20321 event pairs, 379 based on Foata normal form. 7/2573 useless extension candidates. Maximal degree in co-relation 16493. Up to 928 conditions per place. [2022-01-19 07:04:39,105 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 257 selfloop transitions, 112 changer transitions 58/568 dead transitions. [2022-01-19 07:04:39,105 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 568 transitions, 10179 flow [2022-01-19 07:04:39,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:04:39,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:04:39,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4658 transitions. [2022-01-19 07:04:39,107 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7648604269293925 [2022-01-19 07:04:39,107 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4658 transitions. [2022-01-19 07:04:39,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4658 transitions. [2022-01-19 07:04:39,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:39,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4658 transitions. [2022-01-19 07:04:39,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.6206896551724) internal successors, (4658), 29 states have internal predecessors, (4658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:39,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:39,113 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:39,113 INFO L186 Difference]: Start difference. First operand has 619 places, 464 transitions, 7156 flow. Second operand 29 states and 4658 transitions. [2022-01-19 07:04:39,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 568 transitions, 10179 flow [2022-01-19 07:04:39,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 590 places, 568 transitions, 9620 flow, removed 57 selfloop flow, removed 30 redundant places. [2022-01-19 07:04:39,363 INFO L242 Difference]: Finished difference. Result has 600 places, 470 transitions, 7178 flow [2022-01-19 07:04:39,363 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6759, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7178, PETRI_PLACES=600, PETRI_TRANSITIONS=470} [2022-01-19 07:04:39,364 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 413 predicate places. [2022-01-19 07:04:39,364 INFO L470 AbstractCegarLoop]: Abstraction has has 600 places, 470 transitions, 7178 flow [2022-01-19 07:04:39,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:39,364 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:39,364 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:39,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-01-19 07:04:39,364 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:39,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:39,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1319380294, now seen corresponding path program 56 times [2022-01-19 07:04:39,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:39,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152200099] [2022-01-19 07:04:39,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:39,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:39,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:39,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:39,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152200099] [2022-01-19 07:04:39,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152200099] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:39,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:39,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:39,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121969662] [2022-01-19 07:04:39,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:39,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:39,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:39,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:39,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:39,471 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:39,472 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 470 transitions, 7178 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:39,472 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:39,472 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:39,472 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:40,524 INFO L129 PetriNetUnfolder]: 736/2673 cut-off events. [2022-01-19 07:04:40,524 INFO L130 PetriNetUnfolder]: For 49962/49983 co-relation queries the response was YES. [2022-01-19 07:04:40,565 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15909 conditions, 2673 events. 736/2673 cut-off events. For 49962/49983 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 20335 event pairs, 396 based on Foata normal form. 7/2582 useless extension candidates. Maximal degree in co-relation 15696. Up to 918 conditions per place. [2022-01-19 07:04:40,573 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 247 selfloop transitions, 90 changer transitions 59/537 dead transitions. [2022-01-19 07:04:40,574 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 537 transitions, 9064 flow [2022-01-19 07:04:40,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 07:04:40,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 07:04:40,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4494 transitions. [2022-01-19 07:04:40,576 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2022-01-19 07:04:40,576 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4494 transitions. [2022-01-19 07:04:40,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4494 transitions. [2022-01-19 07:04:40,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:40,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4494 transitions. [2022-01-19 07:04:40,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.5) internal successors, (4494), 28 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:40,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:40,581 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:40,581 INFO L186 Difference]: Start difference. First operand has 600 places, 470 transitions, 7178 flow. Second operand 28 states and 4494 transitions. [2022-01-19 07:04:40,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 537 transitions, 9064 flow [2022-01-19 07:04:40,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 537 transitions, 8747 flow, removed 55 selfloop flow, removed 15 redundant places. [2022-01-19 07:04:40,821 INFO L242 Difference]: Finished difference. Result has 605 places, 438 transitions, 6281 flow [2022-01-19 07:04:40,821 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6890, PETRI_DIFFERENCE_MINUEND_PLACES=571, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=6281, PETRI_PLACES=605, PETRI_TRANSITIONS=438} [2022-01-19 07:04:40,821 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 418 predicate places. [2022-01-19 07:04:40,821 INFO L470 AbstractCegarLoop]: Abstraction has has 605 places, 438 transitions, 6281 flow [2022-01-19 07:04:40,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:40,822 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:40,822 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:40,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-01-19 07:04:40,822 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:40,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:40,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1341491040, now seen corresponding path program 57 times [2022-01-19 07:04:40,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:40,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450328172] [2022-01-19 07:04:40,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:40,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:40,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:40,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:40,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450328172] [2022-01-19 07:04:40,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450328172] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:40,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:40,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:40,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207787496] [2022-01-19 07:04:40,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:40,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:40,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:40,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:40,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:40,925 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:40,926 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 605 places, 438 transitions, 6281 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:40,926 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:40,926 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:40,926 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:41,922 INFO L129 PetriNetUnfolder]: 740/2678 cut-off events. [2022-01-19 07:04:41,922 INFO L130 PetriNetUnfolder]: For 50712/50733 co-relation queries the response was YES. [2022-01-19 07:04:41,975 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15926 conditions, 2678 events. 740/2678 cut-off events. For 50712/50733 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 20342 event pairs, 392 based on Foata normal form. 7/2587 useless extension candidates. Maximal degree in co-relation 15716. Up to 920 conditions per place. [2022-01-19 07:04:41,987 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 239 selfloop transitions, 112 changer transitions 56/548 dead transitions. [2022-01-19 07:04:41,987 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 548 transitions, 9296 flow [2022-01-19 07:04:41,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:04:41,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:04:41,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4659 transitions. [2022-01-19 07:04:41,989 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.765024630541872 [2022-01-19 07:04:41,989 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4659 transitions. [2022-01-19 07:04:41,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4659 transitions. [2022-01-19 07:04:41,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:41,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4659 transitions. [2022-01-19 07:04:41,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.6551724137931) internal successors, (4659), 29 states have internal predecessors, (4659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:41,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:41,995 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:41,995 INFO L186 Difference]: Start difference. First operand has 605 places, 438 transitions, 6281 flow. Second operand 29 states and 4659 transitions. [2022-01-19 07:04:41,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 548 transitions, 9296 flow [2022-01-19 07:04:42,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 548 transitions, 8711 flow, removed 40 selfloop flow, removed 36 redundant places. [2022-01-19 07:04:42,206 INFO L242 Difference]: Finished difference. Result has 578 places, 449 transitions, 6391 flow [2022-01-19 07:04:42,206 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5834, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6391, PETRI_PLACES=578, PETRI_TRANSITIONS=449} [2022-01-19 07:04:42,207 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 391 predicate places. [2022-01-19 07:04:42,207 INFO L470 AbstractCegarLoop]: Abstraction has has 578 places, 449 transitions, 6391 flow [2022-01-19 07:04:42,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:42,207 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:42,207 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:42,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-01-19 07:04:42,207 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:42,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:42,207 INFO L85 PathProgramCache]: Analyzing trace with hash 940176230, now seen corresponding path program 58 times [2022-01-19 07:04:42,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:42,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344778628] [2022-01-19 07:04:42,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:42,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:42,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:42,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:42,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344778628] [2022-01-19 07:04:42,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344778628] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:42,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:42,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:42,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507921527] [2022-01-19 07:04:42,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:42,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:42,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:42,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:42,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:42,305 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:42,306 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 578 places, 449 transitions, 6391 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:42,306 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:42,306 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:42,306 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:43,339 INFO L129 PetriNetUnfolder]: 727/2664 cut-off events. [2022-01-19 07:04:43,340 INFO L130 PetriNetUnfolder]: For 46108/46129 co-relation queries the response was YES. [2022-01-19 07:04:43,379 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15480 conditions, 2664 events. 727/2664 cut-off events. For 46108/46129 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 20407 event pairs, 358 based on Foata normal form. 7/2578 useless extension candidates. Maximal degree in co-relation 15274. Up to 896 conditions per place. [2022-01-19 07:04:43,386 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 238 selfloop transitions, 103 changer transitions 71/553 dead transitions. [2022-01-19 07:04:43,387 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 553 transitions, 9178 flow [2022-01-19 07:04:43,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 07:04:43,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 07:04:43,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5755 transitions. [2022-01-19 07:04:43,389 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7612433862433863 [2022-01-19 07:04:43,389 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5755 transitions. [2022-01-19 07:04:43,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5755 transitions. [2022-01-19 07:04:43,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:43,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5755 transitions. [2022-01-19 07:04:43,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 159.86111111111111) internal successors, (5755), 36 states have internal predecessors, (5755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:43,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:43,396 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:43,396 INFO L186 Difference]: Start difference. First operand has 578 places, 449 transitions, 6391 flow. Second operand 36 states and 5755 transitions. [2022-01-19 07:04:43,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 553 transitions, 9178 flow [2022-01-19 07:04:43,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 553 transitions, 8906 flow, removed 58 selfloop flow, removed 13 redundant places. [2022-01-19 07:04:43,644 INFO L242 Difference]: Finished difference. Result has 604 places, 441 transitions, 6279 flow [2022-01-19 07:04:43,645 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6186, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=6279, PETRI_PLACES=604, PETRI_TRANSITIONS=441} [2022-01-19 07:04:43,645 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 417 predicate places. [2022-01-19 07:04:43,645 INFO L470 AbstractCegarLoop]: Abstraction has has 604 places, 441 transitions, 6279 flow [2022-01-19 07:04:43,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:43,645 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:43,645 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:43,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-01-19 07:04:43,646 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:43,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:43,646 INFO L85 PathProgramCache]: Analyzing trace with hash -771603968, now seen corresponding path program 59 times [2022-01-19 07:04:43,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:43,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464817292] [2022-01-19 07:04:43,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:43,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:43,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:43,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:43,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464817292] [2022-01-19 07:04:43,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464817292] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:43,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:43,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:43,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222352044] [2022-01-19 07:04:43,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:43,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:43,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:43,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:43,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:43,765 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:43,765 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 441 transitions, 6279 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:43,765 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:43,766 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:43,766 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:44,758 INFO L129 PetriNetUnfolder]: 699/2574 cut-off events. [2022-01-19 07:04:44,758 INFO L130 PetriNetUnfolder]: For 45769/45790 co-relation queries the response was YES. [2022-01-19 07:04:44,795 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14864 conditions, 2574 events. 699/2574 cut-off events. For 45769/45790 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 19464 event pairs, 359 based on Foata normal form. 7/2487 useless extension candidates. Maximal degree in co-relation 14648. Up to 908 conditions per place. [2022-01-19 07:04:44,802 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 226 selfloop transitions, 86 changer transitions 61/514 dead transitions. [2022-01-19 07:04:44,802 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 611 places, 514 transitions, 8284 flow [2022-01-19 07:04:44,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:04:44,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:04:44,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4800 transitions. [2022-01-19 07:04:44,804 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2022-01-19 07:04:44,804 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4800 transitions. [2022-01-19 07:04:44,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4800 transitions. [2022-01-19 07:04:44,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:44,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4800 transitions. [2022-01-19 07:04:44,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.0) internal successors, (4800), 30 states have internal predecessors, (4800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:44,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:44,815 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:44,815 INFO L186 Difference]: Start difference. First operand has 604 places, 441 transitions, 6279 flow. Second operand 30 states and 4800 transitions. [2022-01-19 07:04:44,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 611 places, 514 transitions, 8284 flow [2022-01-19 07:04:45,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 514 transitions, 7924 flow, removed 88 selfloop flow, removed 25 redundant places. [2022-01-19 07:04:45,010 INFO L242 Difference]: Finished difference. Result has 597 places, 413 transitions, 5526 flow [2022-01-19 07:04:45,010 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6010, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=5526, PETRI_PLACES=597, PETRI_TRANSITIONS=413} [2022-01-19 07:04:45,011 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 410 predicate places. [2022-01-19 07:04:45,011 INFO L470 AbstractCegarLoop]: Abstraction has has 597 places, 413 transitions, 5526 flow [2022-01-19 07:04:45,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:45,011 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:45,011 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:45,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-01-19 07:04:45,011 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:45,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:45,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1027088626, now seen corresponding path program 60 times [2022-01-19 07:04:45,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:45,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405570117] [2022-01-19 07:04:45,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:45,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:45,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:45,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:45,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405570117] [2022-01-19 07:04:45,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405570117] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:45,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:45,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:45,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952185321] [2022-01-19 07:04:45,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:45,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:45,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:45,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:45,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:45,118 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:45,118 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 597 places, 413 transitions, 5526 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:45,118 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:45,119 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:45,119 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:46,137 INFO L129 PetriNetUnfolder]: 691/2544 cut-off events. [2022-01-19 07:04:46,137 INFO L130 PetriNetUnfolder]: For 44573/44594 co-relation queries the response was YES. [2022-01-19 07:04:46,180 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14462 conditions, 2544 events. 691/2544 cut-off events. For 44573/44594 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 19112 event pairs, 355 based on Foata normal form. 7/2459 useless extension candidates. Maximal degree in co-relation 14254. Up to 904 conditions per place. [2022-01-19 07:04:46,187 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 222 selfloop transitions, 77 changer transitions 58/498 dead transitions. [2022-01-19 07:04:46,187 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 498 transitions, 7772 flow [2022-01-19 07:04:46,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:04:46,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:04:46,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4804 transitions. [2022-01-19 07:04:46,190 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625396825396825 [2022-01-19 07:04:46,190 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4804 transitions. [2022-01-19 07:04:46,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4804 transitions. [2022-01-19 07:04:46,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:46,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4804 transitions. [2022-01-19 07:04:46,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.13333333333333) internal successors, (4804), 30 states have internal predecessors, (4804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:46,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:46,196 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:46,196 INFO L186 Difference]: Start difference. First operand has 597 places, 413 transitions, 5526 flow. Second operand 30 states and 4804 transitions. [2022-01-19 07:04:46,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 591 places, 498 transitions, 7772 flow [2022-01-19 07:04:46,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 498 transitions, 7279 flow, removed 36 selfloop flow, removed 35 redundant places. [2022-01-19 07:04:46,377 INFO L242 Difference]: Finished difference. Result has 568 places, 400 transitions, 5022 flow [2022-01-19 07:04:46,378 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5137, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=5022, PETRI_PLACES=568, PETRI_TRANSITIONS=400} [2022-01-19 07:04:46,378 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 381 predicate places. [2022-01-19 07:04:46,378 INFO L470 AbstractCegarLoop]: Abstraction has has 568 places, 400 transitions, 5022 flow [2022-01-19 07:04:46,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:46,378 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:46,378 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:46,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-01-19 07:04:46,378 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:46,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:46,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1112404892, now seen corresponding path program 61 times [2022-01-19 07:04:46,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:46,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906295523] [2022-01-19 07:04:46,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:46,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:46,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:46,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:46,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906295523] [2022-01-19 07:04:46,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906295523] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:46,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:46,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:46,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511784626] [2022-01-19 07:04:46,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:46,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:46,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:46,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:46,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:46,476 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:46,476 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 400 transitions, 5022 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:46,476 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:46,477 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:46,477 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:47,498 INFO L129 PetriNetUnfolder]: 663/2462 cut-off events. [2022-01-19 07:04:47,498 INFO L130 PetriNetUnfolder]: For 39146/39167 co-relation queries the response was YES. [2022-01-19 07:04:47,527 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13488 conditions, 2462 events. 663/2462 cut-off events. For 39146/39167 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 18463 event pairs, 355 based on Foata normal form. 7/2377 useless extension candidates. Maximal degree in co-relation 13289. Up to 890 conditions per place. [2022-01-19 07:04:47,533 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 202 selfloop transitions, 51 changer transitions 61/455 dead transitions. [2022-01-19 07:04:47,533 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 455 transitions, 6463 flow [2022-01-19 07:04:47,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:04:47,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:04:47,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4636 transitions. [2022-01-19 07:04:47,536 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.761247947454844 [2022-01-19 07:04:47,536 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4636 transitions. [2022-01-19 07:04:47,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4636 transitions. [2022-01-19 07:04:47,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:47,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4636 transitions. [2022-01-19 07:04:47,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 159.86206896551724) internal successors, (4636), 29 states have internal predecessors, (4636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:47,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:47,544 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:47,544 INFO L186 Difference]: Start difference. First operand has 568 places, 400 transitions, 5022 flow. Second operand 29 states and 4636 transitions. [2022-01-19 07:04:47,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 455 transitions, 6463 flow [2022-01-19 07:04:47,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 455 transitions, 6168 flow, removed 23 selfloop flow, removed 31 redundant places. [2022-01-19 07:04:47,707 INFO L242 Difference]: Finished difference. Result has 543 places, 354 transitions, 3905 flow [2022-01-19 07:04:47,707 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4749, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=3905, PETRI_PLACES=543, PETRI_TRANSITIONS=354} [2022-01-19 07:04:47,707 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 356 predicate places. [2022-01-19 07:04:47,707 INFO L470 AbstractCegarLoop]: Abstraction has has 543 places, 354 transitions, 3905 flow [2022-01-19 07:04:47,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:47,708 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:47,708 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:47,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-01-19 07:04:47,708 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:47,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:47,708 INFO L85 PathProgramCache]: Analyzing trace with hash 711864822, now seen corresponding path program 62 times [2022-01-19 07:04:47,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:47,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086468211] [2022-01-19 07:04:47,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:47,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:47,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:47,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:47,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086468211] [2022-01-19 07:04:47,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086468211] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:47,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:47,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:47,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514916333] [2022-01-19 07:04:47,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:47,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:47,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:47,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:47,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:47,842 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:47,843 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 354 transitions, 3905 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:47,843 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:47,843 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:47,843 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:48,672 INFO L129 PetriNetUnfolder]: 632/2349 cut-off events. [2022-01-19 07:04:48,672 INFO L130 PetriNetUnfolder]: For 35266/35287 co-relation queries the response was YES. [2022-01-19 07:04:48,703 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12498 conditions, 2349 events. 632/2349 cut-off events. For 35266/35287 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 17227 event pairs, 347 based on Foata normal form. 7/2265 useless extension candidates. Maximal degree in co-relation 12314. Up to 870 conditions per place. [2022-01-19 07:04:48,710 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 174 selfloop transitions, 28 changer transitions 65/408 dead transitions. [2022-01-19 07:04:48,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 408 transitions, 5190 flow [2022-01-19 07:04:48,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:04:48,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:04:48,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4777 transitions. [2022-01-19 07:04:48,712 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7582539682539683 [2022-01-19 07:04:48,712 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4777 transitions. [2022-01-19 07:04:48,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4777 transitions. [2022-01-19 07:04:48,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:48,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4777 transitions. [2022-01-19 07:04:48,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.23333333333332) internal successors, (4777), 30 states have internal predecessors, (4777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:48,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:48,718 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:48,718 INFO L186 Difference]: Start difference. First operand has 543 places, 354 transitions, 3905 flow. Second operand 30 states and 4777 transitions. [2022-01-19 07:04:48,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 408 transitions, 5190 flow [2022-01-19 07:04:48,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 408 transitions, 4823 flow, removed 25 selfloop flow, removed 37 redundant places. [2022-01-19 07:04:48,845 INFO L242 Difference]: Finished difference. Result has 492 places, 303 transitions, 2710 flow [2022-01-19 07:04:48,845 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3566, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2710, PETRI_PLACES=492, PETRI_TRANSITIONS=303} [2022-01-19 07:04:48,846 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 305 predicate places. [2022-01-19 07:04:48,846 INFO L470 AbstractCegarLoop]: Abstraction has has 492 places, 303 transitions, 2710 flow [2022-01-19 07:04:48,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:48,846 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:48,846 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:48,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-01-19 07:04:48,846 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:48,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:48,847 INFO L85 PathProgramCache]: Analyzing trace with hash -59226848, now seen corresponding path program 63 times [2022-01-19 07:04:48,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:48,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523086646] [2022-01-19 07:04:48,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:48,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:48,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:48,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:48,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523086646] [2022-01-19 07:04:48,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523086646] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:48,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:48,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:48,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513624909] [2022-01-19 07:04:48,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:48,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:48,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:48,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:48,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:48,969 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:48,970 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 303 transitions, 2710 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:48,970 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:48,970 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:48,970 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:49,979 INFO L129 PetriNetUnfolder]: 669/2386 cut-off events. [2022-01-19 07:04:49,979 INFO L130 PetriNetUnfolder]: For 35382/35400 co-relation queries the response was YES. [2022-01-19 07:04:50,010 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13077 conditions, 2386 events. 669/2386 cut-off events. For 35382/35400 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 17371 event pairs, 365 based on Foata normal form. 3/2299 useless extension candidates. Maximal degree in co-relation 12904. Up to 870 conditions per place. [2022-01-19 07:04:50,017 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 191 selfloop transitions, 52 changer transitions 70/454 dead transitions. [2022-01-19 07:04:50,017 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 454 transitions, 6324 flow [2022-01-19 07:04:50,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 07:04:50,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 07:04:50,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7334 transitions. [2022-01-19 07:04:50,020 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7592132505175984 [2022-01-19 07:04:50,020 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7334 transitions. [2022-01-19 07:04:50,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7334 transitions. [2022-01-19 07:04:50,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:50,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7334 transitions. [2022-01-19 07:04:50,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.43478260869566) internal successors, (7334), 46 states have internal predecessors, (7334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:50,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:50,029 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:50,029 INFO L186 Difference]: Start difference. First operand has 492 places, 303 transitions, 2710 flow. Second operand 46 states and 7334 transitions. [2022-01-19 07:04:50,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 454 transitions, 6324 flow [2022-01-19 07:04:50,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 454 transitions, 5771 flow, removed 89 selfloop flow, removed 35 redundant places. [2022-01-19 07:04:50,138 INFO L242 Difference]: Finished difference. Result has 465 places, 324 transitions, 3136 flow [2022-01-19 07:04:50,138 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2468, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=3136, PETRI_PLACES=465, PETRI_TRANSITIONS=324} [2022-01-19 07:04:50,138 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 278 predicate places. [2022-01-19 07:04:50,138 INFO L470 AbstractCegarLoop]: Abstraction has has 465 places, 324 transitions, 3136 flow [2022-01-19 07:04:50,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:50,139 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:50,139 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:50,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-01-19 07:04:50,139 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:50,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:50,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1612633054, now seen corresponding path program 64 times [2022-01-19 07:04:50,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:50,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888022712] [2022-01-19 07:04:50,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:50,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:50,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:50,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:50,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:50,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888022712] [2022-01-19 07:04:50,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888022712] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:50,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:50,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:50,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588206014] [2022-01-19 07:04:50,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:50,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:50,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:50,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:50,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:50,270 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:50,271 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 324 transitions, 3136 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:50,271 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:50,271 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:50,271 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:51,282 INFO L129 PetriNetUnfolder]: 713/2489 cut-off events. [2022-01-19 07:04:51,282 INFO L130 PetriNetUnfolder]: For 37447/37467 co-relation queries the response was YES. [2022-01-19 07:04:51,313 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14129 conditions, 2489 events. 713/2489 cut-off events. For 37447/37467 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 18196 event pairs, 396 based on Foata normal form. 3/2399 useless extension candidates. Maximal degree in co-relation 13952. Up to 870 conditions per place. [2022-01-19 07:04:51,320 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 197 selfloop transitions, 64 changer transitions 70/472 dead transitions. [2022-01-19 07:04:51,320 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 472 transitions, 6973 flow [2022-01-19 07:04:51,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-19 07:04:51,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-01-19 07:04:51,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6864 transitions. [2022-01-19 07:04:51,323 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7601328903654485 [2022-01-19 07:04:51,323 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6864 transitions. [2022-01-19 07:04:51,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6864 transitions. [2022-01-19 07:04:51,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:51,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6864 transitions. [2022-01-19 07:04:51,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 159.62790697674419) internal successors, (6864), 43 states have internal predecessors, (6864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:51,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:51,332 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:51,332 INFO L186 Difference]: Start difference. First operand has 465 places, 324 transitions, 3136 flow. Second operand 43 states and 6864 transitions. [2022-01-19 07:04:51,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 472 transitions, 6973 flow [2022-01-19 07:04:51,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 472 transitions, 6244 flow, removed 353 selfloop flow, removed 25 redundant places. [2022-01-19 07:04:51,458 INFO L242 Difference]: Finished difference. Result has 485 places, 346 transitions, 3642 flow [2022-01-19 07:04:51,459 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2926, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=3642, PETRI_PLACES=485, PETRI_TRANSITIONS=346} [2022-01-19 07:04:51,459 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 298 predicate places. [2022-01-19 07:04:51,459 INFO L470 AbstractCegarLoop]: Abstraction has has 485 places, 346 transitions, 3642 flow [2022-01-19 07:04:51,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:51,459 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:51,459 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:51,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-01-19 07:04:51,460 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:51,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:51,460 INFO L85 PathProgramCache]: Analyzing trace with hash 58890488, now seen corresponding path program 65 times [2022-01-19 07:04:51,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:51,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652654606] [2022-01-19 07:04:51,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:51,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:51,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:51,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:51,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652654606] [2022-01-19 07:04:51,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652654606] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:51,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:51,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:51,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061836613] [2022-01-19 07:04:51,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:51,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:51,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:51,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:51,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:51,567 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:51,568 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 346 transitions, 3642 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:51,568 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:51,568 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:51,568 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:52,730 INFO L129 PetriNetUnfolder]: 747/2589 cut-off events. [2022-01-19 07:04:52,730 INFO L130 PetriNetUnfolder]: For 45367/45387 co-relation queries the response was YES. [2022-01-19 07:04:52,768 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15583 conditions, 2589 events. 747/2589 cut-off events. For 45367/45387 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 19306 event pairs, 384 based on Foata normal form. 3/2497 useless extension candidates. Maximal degree in co-relation 15394. Up to 870 conditions per place. [2022-01-19 07:04:52,776 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 214 selfloop transitions, 70 changer transitions 70/495 dead transitions. [2022-01-19 07:04:52,776 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 495 transitions, 7798 flow [2022-01-19 07:04:52,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 07:04:52,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 07:04:52,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7180 transitions. [2022-01-19 07:04:52,779 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7597883597883598 [2022-01-19 07:04:52,779 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7180 transitions. [2022-01-19 07:04:52,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7180 transitions. [2022-01-19 07:04:52,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:52,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7180 transitions. [2022-01-19 07:04:52,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.55555555555554) internal successors, (7180), 45 states have internal predecessors, (7180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:52,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:52,788 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:52,788 INFO L186 Difference]: Start difference. First operand has 485 places, 346 transitions, 3642 flow. Second operand 45 states and 7180 transitions. [2022-01-19 07:04:52,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 495 transitions, 7798 flow [2022-01-19 07:04:52,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 495 transitions, 7157 flow, removed 287 selfloop flow, removed 25 redundant places. [2022-01-19 07:04:52,950 INFO L242 Difference]: Finished difference. Result has 509 places, 366 transitions, 4207 flow [2022-01-19 07:04:52,950 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3475, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=4207, PETRI_PLACES=509, PETRI_TRANSITIONS=366} [2022-01-19 07:04:52,950 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 322 predicate places. [2022-01-19 07:04:52,950 INFO L470 AbstractCegarLoop]: Abstraction has has 509 places, 366 transitions, 4207 flow [2022-01-19 07:04:52,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:52,950 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:52,950 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:52,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-01-19 07:04:52,951 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:52,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:52,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1538926772, now seen corresponding path program 66 times [2022-01-19 07:04:52,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:52,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848941260] [2022-01-19 07:04:52,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:52,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:53,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:53,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:53,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848941260] [2022-01-19 07:04:53,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848941260] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:53,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:53,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:53,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277916528] [2022-01-19 07:04:53,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:53,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:53,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:53,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:53,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:53,051 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:53,052 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 366 transitions, 4207 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:53,052 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:53,052 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:53,052 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:54,168 INFO L129 PetriNetUnfolder]: 743/2673 cut-off events. [2022-01-19 07:04:54,169 INFO L130 PetriNetUnfolder]: For 46832/46838 co-relation queries the response was YES. [2022-01-19 07:04:54,219 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15765 conditions, 2673 events. 743/2673 cut-off events. For 46832/46838 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 20246 event pairs, 445 based on Foata normal form. 1/2577 useless extension candidates. Maximal degree in co-relation 15564. Up to 870 conditions per place. [2022-01-19 07:04:54,229 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 217 selfloop transitions, 74 changer transitions 72/504 dead transitions. [2022-01-19 07:04:54,229 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 504 transitions, 8271 flow [2022-01-19 07:04:54,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-19 07:04:54,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-01-19 07:04:54,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7025 transitions. [2022-01-19 07:04:54,232 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7602813852813853 [2022-01-19 07:04:54,232 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7025 transitions. [2022-01-19 07:04:54,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7025 transitions. [2022-01-19 07:04:54,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:54,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7025 transitions. [2022-01-19 07:04:54,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.6590909090909) internal successors, (7025), 44 states have internal predecessors, (7025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:54,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:54,241 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:54,241 INFO L186 Difference]: Start difference. First operand has 509 places, 366 transitions, 4207 flow. Second operand 44 states and 7025 transitions. [2022-01-19 07:04:54,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 504 transitions, 8271 flow [2022-01-19 07:04:54,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 504 transitions, 7660 flow, removed 294 selfloop flow, removed 32 redundant places. [2022-01-19 07:04:54,417 INFO L242 Difference]: Finished difference. Result has 522 places, 375 transitions, 4584 flow [2022-01-19 07:04:54,417 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4053, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=4584, PETRI_PLACES=522, PETRI_TRANSITIONS=375} [2022-01-19 07:04:54,418 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 335 predicate places. [2022-01-19 07:04:54,418 INFO L470 AbstractCegarLoop]: Abstraction has has 522 places, 375 transitions, 4584 flow [2022-01-19 07:04:54,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:54,418 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:54,418 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:54,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-01-19 07:04:54,418 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:54,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:54,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1707985558, now seen corresponding path program 67 times [2022-01-19 07:04:54,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:54,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291438127] [2022-01-19 07:04:54,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:54,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:54,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:54,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:54,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:54,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291438127] [2022-01-19 07:04:54,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291438127] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:54,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:54,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:54,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511861079] [2022-01-19 07:04:54,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:54,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:54,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:54,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:54,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:54,538 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:54,539 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 375 transitions, 4584 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:54,539 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:54,539 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:54,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:55,638 INFO L129 PetriNetUnfolder]: 733/2639 cut-off events. [2022-01-19 07:04:55,638 INFO L130 PetriNetUnfolder]: For 46684/46690 co-relation queries the response was YES. [2022-01-19 07:04:55,684 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15534 conditions, 2639 events. 733/2639 cut-off events. For 46684/46690 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 19827 event pairs, 412 based on Foata normal form. 1/2546 useless extension candidates. Maximal degree in co-relation 15330. Up to 870 conditions per place. [2022-01-19 07:04:55,693 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 208 selfloop transitions, 81 changer transitions 62/492 dead transitions. [2022-01-19 07:04:55,693 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 492 transitions, 8064 flow [2022-01-19 07:04:55,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:04:55,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:04:55,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6074 transitions. [2022-01-19 07:04:55,695 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7611528822055138 [2022-01-19 07:04:55,695 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6074 transitions. [2022-01-19 07:04:55,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6074 transitions. [2022-01-19 07:04:55,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:55,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6074 transitions. [2022-01-19 07:04:55,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.8421052631579) internal successors, (6074), 38 states have internal predecessors, (6074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:55,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:55,703 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:55,703 INFO L186 Difference]: Start difference. First operand has 522 places, 375 transitions, 4584 flow. Second operand 38 states and 6074 transitions. [2022-01-19 07:04:55,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 492 transitions, 8064 flow [2022-01-19 07:04:55,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 492 transitions, 7420 flow, removed 270 selfloop flow, removed 28 redundant places. [2022-01-19 07:04:55,877 INFO L242 Difference]: Finished difference. Result has 521 places, 387 transitions, 4924 flow [2022-01-19 07:04:55,877 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4340, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=4924, PETRI_PLACES=521, PETRI_TRANSITIONS=387} [2022-01-19 07:04:55,877 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 334 predicate places. [2022-01-19 07:04:55,877 INFO L470 AbstractCegarLoop]: Abstraction has has 521 places, 387 transitions, 4924 flow [2022-01-19 07:04:55,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:55,878 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:55,878 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:55,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-01-19 07:04:55,878 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:55,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:55,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1714333308, now seen corresponding path program 68 times [2022-01-19 07:04:55,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:55,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928410892] [2022-01-19 07:04:55,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:55,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:55,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:55,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:55,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928410892] [2022-01-19 07:04:55,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928410892] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:55,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:55,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:55,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451298590] [2022-01-19 07:04:55,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:55,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:55,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:55,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:55,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:56,000 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:56,001 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 387 transitions, 4924 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:56,001 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:56,001 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:56,001 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:57,111 INFO L129 PetriNetUnfolder]: 766/2715 cut-off events. [2022-01-19 07:04:57,111 INFO L130 PetriNetUnfolder]: For 48166/48172 co-relation queries the response was YES. [2022-01-19 07:04:57,159 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16474 conditions, 2715 events. 766/2715 cut-off events. For 48166/48172 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 20487 event pairs, 448 based on Foata normal form. 1/2617 useless extension candidates. Maximal degree in co-relation 16276. Up to 870 conditions per place. [2022-01-19 07:04:57,170 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 216 selfloop transitions, 98 changer transitions 63/518 dead transitions. [2022-01-19 07:04:57,170 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 518 transitions, 8714 flow [2022-01-19 07:04:57,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 07:04:57,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 07:04:57,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5604 transitions. [2022-01-19 07:04:57,172 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7624489795918368 [2022-01-19 07:04:57,173 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5604 transitions. [2022-01-19 07:04:57,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5604 transitions. [2022-01-19 07:04:57,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:57,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5604 transitions. [2022-01-19 07:04:57,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 160.11428571428573) internal successors, (5604), 35 states have internal predecessors, (5604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:57,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:57,182 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:57,182 INFO L186 Difference]: Start difference. First operand has 521 places, 387 transitions, 4924 flow. Second operand 35 states and 5604 transitions. [2022-01-19 07:04:57,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 518 transitions, 8714 flow [2022-01-19 07:04:57,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 518 transitions, 7959 flow, removed 324 selfloop flow, removed 20 redundant places. [2022-01-19 07:04:57,388 INFO L242 Difference]: Finished difference. Result has 537 places, 406 transitions, 5312 flow [2022-01-19 07:04:57,388 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4567, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5312, PETRI_PLACES=537, PETRI_TRANSITIONS=406} [2022-01-19 07:04:57,388 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 350 predicate places. [2022-01-19 07:04:57,388 INFO L470 AbstractCegarLoop]: Abstraction has has 537 places, 406 transitions, 5312 flow [2022-01-19 07:04:57,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:57,389 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:57,389 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:57,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-01-19 07:04:57,389 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:57,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:57,389 INFO L85 PathProgramCache]: Analyzing trace with hash -838985778, now seen corresponding path program 69 times [2022-01-19 07:04:57,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:57,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897111664] [2022-01-19 07:04:57,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:57,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:57,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:57,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:57,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897111664] [2022-01-19 07:04:57,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897111664] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:57,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:57,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:57,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070262979] [2022-01-19 07:04:57,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:57,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:57,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:57,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:57,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:57,519 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:57,520 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 406 transitions, 5312 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:57,520 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:57,520 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:57,520 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:04:58,709 INFO L129 PetriNetUnfolder]: 785/2772 cut-off events. [2022-01-19 07:04:58,709 INFO L130 PetriNetUnfolder]: For 50993/50999 co-relation queries the response was YES. [2022-01-19 07:04:58,759 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17102 conditions, 2772 events. 785/2772 cut-off events. For 50993/50999 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 21116 event pairs, 451 based on Foata normal form. 1/2677 useless extension candidates. Maximal degree in co-relation 16895. Up to 870 conditions per place. [2022-01-19 07:04:58,768 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 227 selfloop transitions, 99 changer transitions 60/527 dead transitions. [2022-01-19 07:04:58,768 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 527 transitions, 8945 flow [2022-01-19 07:04:58,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:04:58,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:04:58,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6078 transitions. [2022-01-19 07:04:58,771 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616541353383459 [2022-01-19 07:04:58,771 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6078 transitions. [2022-01-19 07:04:58,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6078 transitions. [2022-01-19 07:04:58,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:04:58,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6078 transitions. [2022-01-19 07:04:58,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.94736842105263) internal successors, (6078), 38 states have internal predecessors, (6078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:58,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:58,778 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:58,778 INFO L186 Difference]: Start difference. First operand has 537 places, 406 transitions, 5312 flow. Second operand 38 states and 6078 transitions. [2022-01-19 07:04:58,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 527 transitions, 8945 flow [2022-01-19 07:04:58,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 527 transitions, 8371 flow, removed 192 selfloop flow, removed 21 redundant places. [2022-01-19 07:04:58,990 INFO L242 Difference]: Finished difference. Result has 557 places, 421 transitions, 5728 flow [2022-01-19 07:04:58,990 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5048, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=5728, PETRI_PLACES=557, PETRI_TRANSITIONS=421} [2022-01-19 07:04:58,991 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 370 predicate places. [2022-01-19 07:04:58,991 INFO L470 AbstractCegarLoop]: Abstraction has has 557 places, 421 transitions, 5728 flow [2022-01-19 07:04:58,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:58,991 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:04:58,991 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:04:58,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-01-19 07:04:58,991 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:04:58,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:04:58,992 INFO L85 PathProgramCache]: Analyzing trace with hash -624649196, now seen corresponding path program 70 times [2022-01-19 07:04:58,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:04:58,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147447523] [2022-01-19 07:04:58,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:04:58,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:04:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:04:59,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:04:59,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:04:59,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147447523] [2022-01-19 07:04:59,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147447523] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:04:59,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:04:59,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:04:59,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051440935] [2022-01-19 07:04:59,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:04:59,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:04:59,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:04:59,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:04:59,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:04:59,115 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:04:59,115 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 421 transitions, 5728 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:04:59,115 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:04:59,115 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:04:59,116 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:05:00,367 INFO L129 PetriNetUnfolder]: 812/2845 cut-off events. [2022-01-19 07:05:00,368 INFO L130 PetriNetUnfolder]: For 56654/56660 co-relation queries the response was YES. [2022-01-19 07:05:00,415 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18058 conditions, 2845 events. 812/2845 cut-off events. For 56654/56660 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 21808 event pairs, 475 based on Foata normal form. 1/2747 useless extension candidates. Maximal degree in co-relation 17843. Up to 870 conditions per place. [2022-01-19 07:05:00,424 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 239 selfloop transitions, 106 changer transitions 61/547 dead transitions. [2022-01-19 07:05:00,424 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 568 places, 547 transitions, 9610 flow [2022-01-19 07:05:00,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 07:05:00,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 07:05:00,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5769 transitions. [2022-01-19 07:05:00,428 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763095238095238 [2022-01-19 07:05:00,428 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5769 transitions. [2022-01-19 07:05:00,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5769 transitions. [2022-01-19 07:05:00,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:05:00,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5769 transitions. [2022-01-19 07:05:00,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.25) internal successors, (5769), 36 states have internal predecessors, (5769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:00,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:00,435 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:00,435 INFO L186 Difference]: Start difference. First operand has 557 places, 421 transitions, 5728 flow. Second operand 36 states and 5769 transitions. [2022-01-19 07:05:00,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 568 places, 547 transitions, 9610 flow [2022-01-19 07:05:00,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 547 transitions, 9124 flow, removed 185 selfloop flow, removed 25 redundant places. [2022-01-19 07:05:00,653 INFO L242 Difference]: Finished difference. Result has 569 places, 443 transitions, 6429 flow [2022-01-19 07:05:00,653 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5502, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=6429, PETRI_PLACES=569, PETRI_TRANSITIONS=443} [2022-01-19 07:05:00,653 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 382 predicate places. [2022-01-19 07:05:00,653 INFO L470 AbstractCegarLoop]: Abstraction has has 569 places, 443 transitions, 6429 flow [2022-01-19 07:05:00,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:00,654 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:05:00,654 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:05:00,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-01-19 07:05:00,654 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:05:00,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:05:00,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1759232538, now seen corresponding path program 71 times [2022-01-19 07:05:00,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:05:00,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893214083] [2022-01-19 07:05:00,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:05:00,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:05:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:05:00,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:05:00,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:05:00,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893214083] [2022-01-19 07:05:00,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893214083] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:05:00,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:05:00,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:05:00,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139561954] [2022-01-19 07:05:00,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:05:00,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:05:00,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:05:00,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:05:00,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:05:00,756 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:05:00,757 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 443 transitions, 6429 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:00,757 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:05:00,757 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:05:00,757 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:05:02,054 INFO L129 PetriNetUnfolder]: 804/2835 cut-off events. [2022-01-19 07:05:02,054 INFO L130 PetriNetUnfolder]: For 59440/59446 co-relation queries the response was YES. [2022-01-19 07:05:02,099 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18147 conditions, 2835 events. 804/2835 cut-off events. For 59440/59446 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 21714 event pairs, 457 based on Foata normal form. 1/2737 useless extension candidates. Maximal degree in co-relation 17928. Up to 870 conditions per place. [2022-01-19 07:05:02,108 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 244 selfloop transitions, 107 changer transitions 61/553 dead transitions. [2022-01-19 07:05:02,108 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 553 transitions, 10040 flow [2022-01-19 07:05:02,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 07:05:02,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 07:05:02,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5924 transitions. [2022-01-19 07:05:02,111 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7624195624195624 [2022-01-19 07:05:02,111 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5924 transitions. [2022-01-19 07:05:02,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5924 transitions. [2022-01-19 07:05:02,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:05:02,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5924 transitions. [2022-01-19 07:05:02,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.1081081081081) internal successors, (5924), 37 states have internal predecessors, (5924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:02,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:02,119 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:02,120 INFO L186 Difference]: Start difference. First operand has 569 places, 443 transitions, 6429 flow. Second operand 37 states and 5924 transitions. [2022-01-19 07:05:02,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 553 transitions, 10040 flow [2022-01-19 07:05:02,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 553 transitions, 9503 flow, removed 211 selfloop flow, removed 20 redundant places. [2022-01-19 07:05:02,384 INFO L242 Difference]: Finished difference. Result has 587 places, 451 transitions, 6717 flow [2022-01-19 07:05:02,384 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6186, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=6717, PETRI_PLACES=587, PETRI_TRANSITIONS=451} [2022-01-19 07:05:02,384 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 400 predicate places. [2022-01-19 07:05:02,384 INFO L470 AbstractCegarLoop]: Abstraction has has 587 places, 451 transitions, 6717 flow [2022-01-19 07:05:02,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:02,385 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:05:02,385 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:05:02,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-01-19 07:05:02,385 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:05:02,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:05:02,385 INFO L85 PathProgramCache]: Analyzing trace with hash -730277562, now seen corresponding path program 72 times [2022-01-19 07:05:02,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:05:02,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603648485] [2022-01-19 07:05:02,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:05:02,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:05:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:05:02,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:05:02,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:05:02,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603648485] [2022-01-19 07:05:02,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603648485] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:05:02,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:05:02,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:05:02,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352600227] [2022-01-19 07:05:02,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:05:02,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:05:02,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:05:02,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:05:02,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:05:02,506 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:05:02,507 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 451 transitions, 6717 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:02,507 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:05:02,507 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:05:02,507 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:05:03,754 INFO L129 PetriNetUnfolder]: 832/2914 cut-off events. [2022-01-19 07:05:03,754 INFO L130 PetriNetUnfolder]: For 65873/65879 co-relation queries the response was YES. [2022-01-19 07:05:03,803 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19058 conditions, 2914 events. 832/2914 cut-off events. For 65873/65879 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 22599 event pairs, 472 based on Foata normal form. 1/2814 useless extension candidates. Maximal degree in co-relation 18832. Up to 870 conditions per place. [2022-01-19 07:05:03,813 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 269 selfloop transitions, 106 changer transitions 63/579 dead transitions. [2022-01-19 07:05:03,813 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 579 transitions, 10802 flow [2022-01-19 07:05:03,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 07:05:03,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 07:05:03,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5765 transitions. [2022-01-19 07:05:03,815 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625661375661376 [2022-01-19 07:05:03,815 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5765 transitions. [2022-01-19 07:05:03,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5765 transitions. [2022-01-19 07:05:03,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:05:03,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5765 transitions. [2022-01-19 07:05:03,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.13888888888889) internal successors, (5765), 36 states have internal predecessors, (5765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:03,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:03,823 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:03,823 INFO L186 Difference]: Start difference. First operand has 587 places, 451 transitions, 6717 flow. Second operand 36 states and 5765 transitions. [2022-01-19 07:05:03,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 579 transitions, 10802 flow [2022-01-19 07:05:04,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 579 transitions, 10313 flow, removed 176 selfloop flow, removed 20 redundant places. [2022-01-19 07:05:04,130 INFO L242 Difference]: Finished difference. Result has 605 places, 471 transitions, 7343 flow [2022-01-19 07:05:04,130 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6458, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=7343, PETRI_PLACES=605, PETRI_TRANSITIONS=471} [2022-01-19 07:05:04,130 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 418 predicate places. [2022-01-19 07:05:04,130 INFO L470 AbstractCegarLoop]: Abstraction has has 605 places, 471 transitions, 7343 flow [2022-01-19 07:05:04,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:04,131 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:05:04,131 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:05:04,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-01-19 07:05:04,131 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:05:04,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:05:04,131 INFO L85 PathProgramCache]: Analyzing trace with hash -199673802, now seen corresponding path program 73 times [2022-01-19 07:05:04,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:05:04,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781198471] [2022-01-19 07:05:04,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:05:04,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:05:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:05:04,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:05:04,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:05:04,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781198471] [2022-01-19 07:05:04,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781198471] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:05:04,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:05:04,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:05:04,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356749665] [2022-01-19 07:05:04,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:05:04,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:05:04,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:05:04,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:05:04,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:05:04,242 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:05:04,243 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 605 places, 471 transitions, 7343 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:04,243 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:05:04,243 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:05:04,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:05:05,510 INFO L129 PetriNetUnfolder]: 851/2879 cut-off events. [2022-01-19 07:05:05,511 INFO L130 PetriNetUnfolder]: For 75335/75355 co-relation queries the response was YES. [2022-01-19 07:05:05,560 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20009 conditions, 2879 events. 851/2879 cut-off events. For 75335/75355 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 22080 event pairs, 433 based on Foata normal form. 3/2785 useless extension candidates. Maximal degree in co-relation 19774. Up to 870 conditions per place. [2022-01-19 07:05:05,569 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 284 selfloop transitions, 108 changer transitions 61/594 dead transitions. [2022-01-19 07:05:05,570 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 594 transitions, 11601 flow [2022-01-19 07:05:05,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:05:05,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:05:05,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6082 transitions. [2022-01-19 07:05:05,572 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7621553884711779 [2022-01-19 07:05:05,572 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6082 transitions. [2022-01-19 07:05:05,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6082 transitions. [2022-01-19 07:05:05,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:05:05,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6082 transitions. [2022-01-19 07:05:05,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.05263157894737) internal successors, (6082), 38 states have internal predecessors, (6082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:05,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:05,580 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:05,580 INFO L186 Difference]: Start difference. First operand has 605 places, 471 transitions, 7343 flow. Second operand 38 states and 6082 transitions. [2022-01-19 07:05:05,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 594 transitions, 11601 flow [2022-01-19 07:05:05,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 600 places, 594 transitions, 11032 flow, removed 240 selfloop flow, removed 20 redundant places. [2022-01-19 07:05:05,927 INFO L242 Difference]: Finished difference. Result has 625 places, 486 transitions, 7846 flow [2022-01-19 07:05:05,927 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7105, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=7846, PETRI_PLACES=625, PETRI_TRANSITIONS=486} [2022-01-19 07:05:05,927 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 438 predicate places. [2022-01-19 07:05:05,927 INFO L470 AbstractCegarLoop]: Abstraction has has 625 places, 486 transitions, 7846 flow [2022-01-19 07:05:05,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:05,928 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:05:05,928 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:05:05,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-01-19 07:05:05,928 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:05:05,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:05:05,928 INFO L85 PathProgramCache]: Analyzing trace with hash 301173134, now seen corresponding path program 74 times [2022-01-19 07:05:05,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:05:05,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754170749] [2022-01-19 07:05:05,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:05:05,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:05:05,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:05:06,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:05:06,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:05:06,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754170749] [2022-01-19 07:05:06,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754170749] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:05:06,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:05:06,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:05:06,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964306949] [2022-01-19 07:05:06,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:05:06,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:05:06,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:05:06,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:05:06,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:05:06,035 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:05:06,036 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 625 places, 486 transitions, 7846 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:06,036 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:05:06,036 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:05:06,036 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:05:07,297 INFO L129 PetriNetUnfolder]: 846/2966 cut-off events. [2022-01-19 07:05:07,297 INFO L130 PetriNetUnfolder]: For 77303/77309 co-relation queries the response was YES. [2022-01-19 07:05:07,347 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20089 conditions, 2966 events. 846/2966 cut-off events. For 77303/77309 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 23085 event pairs, 471 based on Foata normal form. 1/2866 useless extension candidates. Maximal degree in co-relation 19847. Up to 870 conditions per place. [2022-01-19 07:05:07,356 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 290 selfloop transitions, 109 changer transitions 62/602 dead transitions. [2022-01-19 07:05:07,357 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 637 places, 602 transitions, 11967 flow [2022-01-19 07:05:07,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 07:05:07,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 07:05:07,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5928 transitions. [2022-01-19 07:05:07,359 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7629343629343629 [2022-01-19 07:05:07,359 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5928 transitions. [2022-01-19 07:05:07,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5928 transitions. [2022-01-19 07:05:07,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:05:07,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5928 transitions. [2022-01-19 07:05:07,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.21621621621622) internal successors, (5928), 37 states have internal predecessors, (5928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:07,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:07,366 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:07,367 INFO L186 Difference]: Start difference. First operand has 625 places, 486 transitions, 7846 flow. Second operand 37 states and 5928 transitions. [2022-01-19 07:05:07,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 637 places, 602 transitions, 11967 flow [2022-01-19 07:05:07,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 615 places, 602 transitions, 11444 flow, removed 185 selfloop flow, removed 22 redundant places. [2022-01-19 07:05:07,735 INFO L242 Difference]: Finished difference. Result has 639 places, 496 transitions, 8197 flow [2022-01-19 07:05:07,736 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7586, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=8197, PETRI_PLACES=639, PETRI_TRANSITIONS=496} [2022-01-19 07:05:07,736 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 452 predicate places. [2022-01-19 07:05:07,736 INFO L470 AbstractCegarLoop]: Abstraction has has 639 places, 496 transitions, 8197 flow [2022-01-19 07:05:07,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:07,736 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:05:07,736 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:05:07,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-01-19 07:05:07,737 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:05:07,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:05:07,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1062180916, now seen corresponding path program 75 times [2022-01-19 07:05:07,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:05:07,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000170234] [2022-01-19 07:05:07,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:05:07,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:05:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:05:07,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:05:07,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:05:07,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000170234] [2022-01-19 07:05:07,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000170234] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:05:07,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:05:07,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:05:07,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432176117] [2022-01-19 07:05:07,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:05:07,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:05:07,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:05:07,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:05:07,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:05:07,853 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:05:07,853 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 639 places, 496 transitions, 8197 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:07,853 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:05:07,854 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:05:07,854 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:05:09,203 INFO L129 PetriNetUnfolder]: 860/3006 cut-off events. [2022-01-19 07:05:09,204 INFO L130 PetriNetUnfolder]: For 85929/85935 co-relation queries the response was YES. [2022-01-19 07:05:09,246 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20788 conditions, 3006 events. 860/3006 cut-off events. For 85929/85935 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 23610 event pairs, 450 based on Foata normal form. 1/2906 useless extension candidates. Maximal degree in co-relation 20540. Up to 870 conditions per place. [2022-01-19 07:05:09,255 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 293 selfloop transitions, 120 changer transitions 62/616 dead transitions. [2022-01-19 07:05:09,255 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 652 places, 616 transitions, 12495 flow [2022-01-19 07:05:09,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 07:05:09,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 07:05:09,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5920 transitions. [2022-01-19 07:05:09,258 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2022-01-19 07:05:09,258 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5920 transitions. [2022-01-19 07:05:09,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5920 transitions. [2022-01-19 07:05:09,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:05:09,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5920 transitions. [2022-01-19 07:05:09,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.0) internal successors, (5920), 37 states have internal predecessors, (5920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:09,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:09,266 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:09,266 INFO L186 Difference]: Start difference. First operand has 639 places, 496 transitions, 8197 flow. Second operand 37 states and 5920 transitions. [2022-01-19 07:05:09,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 652 places, 616 transitions, 12495 flow [2022-01-19 07:05:09,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 631 places, 616 transitions, 11963 flow, removed 196 selfloop flow, removed 21 redundant places. [2022-01-19 07:05:09,705 INFO L242 Difference]: Finished difference. Result has 656 places, 513 transitions, 8769 flow [2022-01-19 07:05:09,706 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7909, PETRI_DIFFERENCE_MINUEND_PLACES=595, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=8769, PETRI_PLACES=656, PETRI_TRANSITIONS=513} [2022-01-19 07:05:09,706 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 469 predicate places. [2022-01-19 07:05:09,706 INFO L470 AbstractCegarLoop]: Abstraction has has 656 places, 513 transitions, 8769 flow [2022-01-19 07:05:09,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:09,706 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:05:09,706 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:05:09,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-01-19 07:05:09,707 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:05:09,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:05:09,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1303378814, now seen corresponding path program 76 times [2022-01-19 07:05:09,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:05:09,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692152106] [2022-01-19 07:05:09,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:05:09,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:05:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:05:09,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:05:09,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:05:09,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692152106] [2022-01-19 07:05:09,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692152106] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:05:09,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:05:09,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:05:09,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767852098] [2022-01-19 07:05:09,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:05:09,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:05:09,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:05:09,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:05:09,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:05:09,816 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:05:09,817 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 656 places, 513 transitions, 8769 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:09,817 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:05:09,817 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:05:09,817 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:05:11,169 INFO L129 PetriNetUnfolder]: 855/2929 cut-off events. [2022-01-19 07:05:11,169 INFO L130 PetriNetUnfolder]: For 86763/86783 co-relation queries the response was YES. [2022-01-19 07:05:11,224 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20828 conditions, 2929 events. 855/2929 cut-off events. For 86763/86783 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 22811 event pairs, 415 based on Foata normal form. 3/2832 useless extension candidates. Maximal degree in co-relation 20573. Up to 870 conditions per place. [2022-01-19 07:05:11,234 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 305 selfloop transitions, 116 changer transitions 63/625 dead transitions. [2022-01-19 07:05:11,234 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 670 places, 625 transitions, 13023 flow [2022-01-19 07:05:11,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:05:11,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:05:11,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6080 transitions. [2022-01-19 07:05:11,236 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2022-01-19 07:05:11,236 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6080 transitions. [2022-01-19 07:05:11,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6080 transitions. [2022-01-19 07:05:11,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:05:11,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6080 transitions. [2022-01-19 07:05:11,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.0) internal successors, (6080), 38 states have internal predecessors, (6080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:11,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:11,244 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:11,244 INFO L186 Difference]: Start difference. First operand has 656 places, 513 transitions, 8769 flow. Second operand 38 states and 6080 transitions. [2022-01-19 07:05:11,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 670 places, 625 transitions, 13023 flow [2022-01-19 07:05:11,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 648 places, 625 transitions, 12440 flow, removed 231 selfloop flow, removed 22 redundant places. [2022-01-19 07:05:11,704 INFO L242 Difference]: Finished difference. Result has 671 places, 518 transitions, 8954 flow [2022-01-19 07:05:11,705 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8492, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8954, PETRI_PLACES=671, PETRI_TRANSITIONS=518} [2022-01-19 07:05:11,705 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 484 predicate places. [2022-01-19 07:05:11,705 INFO L470 AbstractCegarLoop]: Abstraction has has 671 places, 518 transitions, 8954 flow [2022-01-19 07:05:11,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:11,705 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:05:11,706 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:05:11,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-01-19 07:05:11,706 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:05:11,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:05:11,706 INFO L85 PathProgramCache]: Analyzing trace with hash -2142244812, now seen corresponding path program 77 times [2022-01-19 07:05:11,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:05:11,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68618644] [2022-01-19 07:05:11,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:05:11,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:05:11,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:05:11,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:05:11,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:05:11,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68618644] [2022-01-19 07:05:11,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68618644] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:05:11,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:05:11,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:05:11,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992733571] [2022-01-19 07:05:11,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:05:11,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:05:11,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:05:11,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:05:11,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:05:11,833 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:05:11,834 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 671 places, 518 transitions, 8954 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:11,834 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:05:11,834 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:05:11,834 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:05:13,295 INFO L129 PetriNetUnfolder]: 881/3016 cut-off events. [2022-01-19 07:05:13,295 INFO L130 PetriNetUnfolder]: For 87078/87098 co-relation queries the response was YES. [2022-01-19 07:05:13,360 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21486 conditions, 3016 events. 881/3016 cut-off events. For 87078/87098 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 23666 event pairs, 439 based on Foata normal form. 3/2922 useless extension candidates. Maximal degree in co-relation 21227. Up to 872 conditions per place. [2022-01-19 07:05:13,371 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 324 selfloop transitions, 130 changer transitions 88/683 dead transitions. [2022-01-19 07:05:13,371 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 690 places, 683 transitions, 14305 flow [2022-01-19 07:05:13,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-19 07:05:13,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-01-19 07:05:13,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7031 transitions. [2022-01-19 07:05:13,374 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7609307359307359 [2022-01-19 07:05:13,374 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7031 transitions. [2022-01-19 07:05:13,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7031 transitions. [2022-01-19 07:05:13,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:05:13,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7031 transitions. [2022-01-19 07:05:13,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.79545454545453) internal successors, (7031), 44 states have internal predecessors, (7031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:13,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:13,383 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:13,383 INFO L186 Difference]: Start difference. First operand has 671 places, 518 transitions, 8954 flow. Second operand 44 states and 7031 transitions. [2022-01-19 07:05:13,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 690 places, 683 transitions, 14305 flow [2022-01-19 07:05:13,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 670 places, 683 transitions, 13942 flow, removed 132 selfloop flow, removed 20 redundant places. [2022-01-19 07:05:13,899 INFO L242 Difference]: Finished difference. Result has 703 places, 540 transitions, 9799 flow [2022-01-19 07:05:13,899 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8705, PETRI_DIFFERENCE_MINUEND_PLACES=627, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=9799, PETRI_PLACES=703, PETRI_TRANSITIONS=540} [2022-01-19 07:05:13,899 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 516 predicate places. [2022-01-19 07:05:13,899 INFO L470 AbstractCegarLoop]: Abstraction has has 703 places, 540 transitions, 9799 flow [2022-01-19 07:05:13,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:13,900 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:05:13,900 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:05:13,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-01-19 07:05:13,900 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:05:13,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:05:13,900 INFO L85 PathProgramCache]: Analyzing trace with hash 950289242, now seen corresponding path program 78 times [2022-01-19 07:05:13,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:05:13,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830777916] [2022-01-19 07:05:13,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:05:13,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:05:13,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:05:14,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:05:14,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:05:14,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830777916] [2022-01-19 07:05:14,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830777916] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:05:14,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:05:14,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:05:14,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279013228] [2022-01-19 07:05:14,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:05:14,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:05:14,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:05:14,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:05:14,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:05:14,003 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:05:14,004 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 703 places, 540 transitions, 9799 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:14,004 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:05:14,004 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:05:14,004 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:05:15,472 INFO L129 PetriNetUnfolder]: 911/3083 cut-off events. [2022-01-19 07:05:15,473 INFO L130 PetriNetUnfolder]: For 94382/94402 co-relation queries the response was YES. [2022-01-19 07:05:15,524 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22643 conditions, 3083 events. 911/3083 cut-off events. For 94382/94402 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 24291 event pairs, 407 based on Foata normal form. 3/2993 useless extension candidates. Maximal degree in co-relation 22369. Up to 892 conditions per place. [2022-01-19 07:05:15,533 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 313 selfloop transitions, 188 changer transitions 75/717 dead transitions. [2022-01-19 07:05:15,533 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 709 places, 717 transitions, 15509 flow [2022-01-19 07:05:15,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:05:15,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:05:15,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6079 transitions. [2022-01-19 07:05:15,536 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7617794486215539 [2022-01-19 07:05:15,536 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6079 transitions. [2022-01-19 07:05:15,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6079 transitions. [2022-01-19 07:05:15,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:05:15,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6079 transitions. [2022-01-19 07:05:15,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.97368421052633) internal successors, (6079), 38 states have internal predecessors, (6079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:15,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:15,543 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:15,543 INFO L186 Difference]: Start difference. First operand has 703 places, 540 transitions, 9799 flow. Second operand 38 states and 6079 transitions. [2022-01-19 07:05:15,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 709 places, 717 transitions, 15509 flow [2022-01-19 07:05:16,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 672 places, 717 transitions, 14862 flow, removed 191 selfloop flow, removed 37 redundant places. [2022-01-19 07:05:16,056 INFO L242 Difference]: Finished difference. Result has 697 places, 564 transitions, 10551 flow [2022-01-19 07:05:16,057 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9365, PETRI_DIFFERENCE_MINUEND_PLACES=635, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=10551, PETRI_PLACES=697, PETRI_TRANSITIONS=564} [2022-01-19 07:05:16,057 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 510 predicate places. [2022-01-19 07:05:16,057 INFO L470 AbstractCegarLoop]: Abstraction has has 697 places, 564 transitions, 10551 flow [2022-01-19 07:05:16,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:16,057 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:05:16,057 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:05:16,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-01-19 07:05:16,058 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:05:16,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:05:16,058 INFO L85 PathProgramCache]: Analyzing trace with hash 835811594, now seen corresponding path program 79 times [2022-01-19 07:05:16,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:05:16,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888582969] [2022-01-19 07:05:16,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:05:16,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:05:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:05:16,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:05:16,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:05:16,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888582969] [2022-01-19 07:05:16,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888582969] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:05:16,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:05:16,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:05:16,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275408868] [2022-01-19 07:05:16,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:05:16,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:05:16,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:05:16,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:05:16,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:05:16,161 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:05:16,161 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 697 places, 564 transitions, 10551 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:16,162 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:05:16,162 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:05:16,162 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:05:17,534 INFO L129 PetriNetUnfolder]: 911/3074 cut-off events. [2022-01-19 07:05:17,534 INFO L130 PetriNetUnfolder]: For 84417/84437 co-relation queries the response was YES. [2022-01-19 07:05:17,596 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22216 conditions, 3074 events. 911/3074 cut-off events. For 84417/84437 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 24176 event pairs, 450 based on Foata normal form. 3/2973 useless extension candidates. Maximal degree in co-relation 21950. Up to 905 conditions per place. [2022-01-19 07:05:17,607 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 334 selfloop transitions, 137 changer transitions 54/666 dead transitions. [2022-01-19 07:05:17,607 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 701 places, 666 transitions, 14178 flow [2022-01-19 07:05:17,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:05:17,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:05:17,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4672 transitions. [2022-01-19 07:05:17,609 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7671592775041051 [2022-01-19 07:05:17,609 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4672 transitions. [2022-01-19 07:05:17,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4672 transitions. [2022-01-19 07:05:17,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:05:17,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4672 transitions. [2022-01-19 07:05:17,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 161.10344827586206) internal successors, (4672), 29 states have internal predecessors, (4672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:17,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:17,615 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:17,615 INFO L186 Difference]: Start difference. First operand has 697 places, 564 transitions, 10551 flow. Second operand 29 states and 4672 transitions. [2022-01-19 07:05:17,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 701 places, 666 transitions, 14178 flow [2022-01-19 07:05:18,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 681 places, 666 transitions, 13867 flow, removed 89 selfloop flow, removed 20 redundant places. [2022-01-19 07:05:18,084 INFO L242 Difference]: Finished difference. Result has 695 places, 576 transitions, 11009 flow [2022-01-19 07:05:18,085 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10297, PETRI_DIFFERENCE_MINUEND_PLACES=653, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=11009, PETRI_PLACES=695, PETRI_TRANSITIONS=576} [2022-01-19 07:05:18,085 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 508 predicate places. [2022-01-19 07:05:18,085 INFO L470 AbstractCegarLoop]: Abstraction has has 695 places, 576 transitions, 11009 flow [2022-01-19 07:05:18,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:18,085 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:05:18,086 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:05:18,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-01-19 07:05:18,086 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:05:18,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:05:18,086 INFO L85 PathProgramCache]: Analyzing trace with hash -2111767564, now seen corresponding path program 80 times [2022-01-19 07:05:18,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:05:18,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86384285] [2022-01-19 07:05:18,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:05:18,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:05:18,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:05:18,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:05:18,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:05:18,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86384285] [2022-01-19 07:05:18,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86384285] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:05:18,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:05:18,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:05:18,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532862970] [2022-01-19 07:05:18,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:05:18,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:05:18,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:05:18,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:05:18,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:05:18,192 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:05:18,193 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 695 places, 576 transitions, 11009 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:18,193 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:05:18,193 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:05:18,193 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:05:19,517 INFO L129 PetriNetUnfolder]: 914/3093 cut-off events. [2022-01-19 07:05:19,517 INFO L130 PetriNetUnfolder]: For 86249/86269 co-relation queries the response was YES. [2022-01-19 07:05:19,588 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22427 conditions, 3093 events. 914/3093 cut-off events. For 86249/86269 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 24507 event pairs, 419 based on Foata normal form. 3/2993 useless extension candidates. Maximal degree in co-relation 22164. Up to 909 conditions per place. [2022-01-19 07:05:19,599 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 331 selfloop transitions, 159 changer transitions 59/690 dead transitions. [2022-01-19 07:05:19,599 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 710 places, 690 transitions, 14970 flow [2022-01-19 07:05:19,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:05:19,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:05:19,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4819 transitions. [2022-01-19 07:05:19,602 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7649206349206349 [2022-01-19 07:05:19,602 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4819 transitions. [2022-01-19 07:05:19,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4819 transitions. [2022-01-19 07:05:19,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:05:19,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4819 transitions. [2022-01-19 07:05:19,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.63333333333333) internal successors, (4819), 30 states have internal predecessors, (4819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:19,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:19,609 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:19,609 INFO L186 Difference]: Start difference. First operand has 695 places, 576 transitions, 11009 flow. Second operand 30 states and 4819 transitions. [2022-01-19 07:05:19,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 710 places, 690 transitions, 14970 flow [2022-01-19 07:05:20,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 694 places, 690 transitions, 14479 flow, removed 98 selfloop flow, removed 16 redundant places. [2022-01-19 07:05:20,147 INFO L242 Difference]: Finished difference. Result has 710 places, 595 transitions, 11622 flow [2022-01-19 07:05:20,148 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10592, PETRI_DIFFERENCE_MINUEND_PLACES=665, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=11622, PETRI_PLACES=710, PETRI_TRANSITIONS=595} [2022-01-19 07:05:20,148 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 523 predicate places. [2022-01-19 07:05:20,148 INFO L470 AbstractCegarLoop]: Abstraction has has 710 places, 595 transitions, 11622 flow [2022-01-19 07:05:20,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:20,148 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:05:20,148 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:05:20,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-01-19 07:05:20,149 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:05:20,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:05:20,149 INFO L85 PathProgramCache]: Analyzing trace with hash -361630990, now seen corresponding path program 81 times [2022-01-19 07:05:20,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:05:20,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173260311] [2022-01-19 07:05:20,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:05:20,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:05:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:05:20,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:05:20,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:05:20,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173260311] [2022-01-19 07:05:20,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173260311] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:05:20,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:05:20,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:05:20,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522968364] [2022-01-19 07:05:20,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:05:20,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:05:20,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:05:20,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:05:20,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:05:20,254 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:05:20,255 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 710 places, 595 transitions, 11622 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:20,255 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:05:20,255 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:05:20,255 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:05:21,721 INFO L129 PetriNetUnfolder]: 934/3213 cut-off events. [2022-01-19 07:05:21,721 INFO L130 PetriNetUnfolder]: For 90486/90492 co-relation queries the response was YES. [2022-01-19 07:05:21,773 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23415 conditions, 3213 events. 934/3213 cut-off events. For 90486/90492 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 25549 event pairs, 483 based on Foata normal form. 1/3109 useless extension candidates. Maximal degree in co-relation 23145. Up to 913 conditions per place. [2022-01-19 07:05:21,784 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 352 selfloop transitions, 154 changer transitions 58/705 dead transitions. [2022-01-19 07:05:21,784 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 724 places, 705 transitions, 15440 flow [2022-01-19 07:05:21,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:05:21,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:05:21,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4825 transitions. [2022-01-19 07:05:21,786 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658730158730159 [2022-01-19 07:05:21,786 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4825 transitions. [2022-01-19 07:05:21,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4825 transitions. [2022-01-19 07:05:21,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:05:21,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4825 transitions. [2022-01-19 07:05:21,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.83333333333334) internal successors, (4825), 30 states have internal predecessors, (4825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:21,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:21,792 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:21,792 INFO L186 Difference]: Start difference. First operand has 710 places, 595 transitions, 11622 flow. Second operand 30 states and 4825 transitions. [2022-01-19 07:05:21,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 724 places, 705 transitions, 15440 flow [2022-01-19 07:05:22,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 709 places, 705 transitions, 14865 flow, removed 125 selfloop flow, removed 15 redundant places. [2022-01-19 07:05:22,367 INFO L242 Difference]: Finished difference. Result has 724 places, 612 transitions, 11993 flow [2022-01-19 07:05:22,367 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11121, PETRI_DIFFERENCE_MINUEND_PLACES=680, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=11993, PETRI_PLACES=724, PETRI_TRANSITIONS=612} [2022-01-19 07:05:22,367 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 537 predicate places. [2022-01-19 07:05:22,367 INFO L470 AbstractCegarLoop]: Abstraction has has 724 places, 612 transitions, 11993 flow [2022-01-19 07:05:22,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:22,368 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:05:22,368 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:05:22,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-01-19 07:05:22,368 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:05:22,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:05:22,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1199248144, now seen corresponding path program 82 times [2022-01-19 07:05:22,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:05:22,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949684526] [2022-01-19 07:05:22,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:05:22,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:05:22,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:05:22,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:05:22,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:05:22,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949684526] [2022-01-19 07:05:22,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949684526] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:05:22,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:05:22,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:05:22,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100439780] [2022-01-19 07:05:22,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:05:22,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:05:22,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:05:22,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:05:22,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:05:22,469 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:05:22,469 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 724 places, 612 transitions, 11993 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:22,469 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:05:22,470 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:05:22,470 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:05:23,918 INFO L129 PetriNetUnfolder]: 942/3186 cut-off events. [2022-01-19 07:05:23,918 INFO L130 PetriNetUnfolder]: For 87852/87872 co-relation queries the response was YES. [2022-01-19 07:05:23,984 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23354 conditions, 3186 events. 942/3186 cut-off events. For 87852/87872 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 25472 event pairs, 431 based on Foata normal form. 3/3086 useless extension candidates. Maximal degree in co-relation 23078. Up to 913 conditions per place. [2022-01-19 07:05:23,996 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 380 selfloop transitions, 148 changer transitions 71/740 dead transitions. [2022-01-19 07:05:23,996 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 744 places, 740 transitions, 16649 flow [2022-01-19 07:05:23,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 07:05:23,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 07:05:23,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5773 transitions. [2022-01-19 07:05:23,998 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7636243386243386 [2022-01-19 07:05:23,998 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5773 transitions. [2022-01-19 07:05:23,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5773 transitions. [2022-01-19 07:05:23,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:05:23,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5773 transitions. [2022-01-19 07:05:24,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.36111111111111) internal successors, (5773), 36 states have internal predecessors, (5773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:24,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:24,006 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:24,006 INFO L186 Difference]: Start difference. First operand has 724 places, 612 transitions, 11993 flow. Second operand 36 states and 5773 transitions. [2022-01-19 07:05:24,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 744 places, 740 transitions, 16649 flow [2022-01-19 07:05:24,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 732 places, 740 transitions, 16335 flow, removed 65 selfloop flow, removed 12 redundant places. [2022-01-19 07:05:24,695 INFO L242 Difference]: Finished difference. Result has 755 places, 628 transitions, 12696 flow [2022-01-19 07:05:24,696 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11728, PETRI_DIFFERENCE_MINUEND_PLACES=697, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=12696, PETRI_PLACES=755, PETRI_TRANSITIONS=628} [2022-01-19 07:05:24,696 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 568 predicate places. [2022-01-19 07:05:24,696 INFO L470 AbstractCegarLoop]: Abstraction has has 755 places, 628 transitions, 12696 flow [2022-01-19 07:05:24,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:24,696 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:05:24,696 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:05:24,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2022-01-19 07:05:24,696 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:05:24,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:05:24,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1474874722, now seen corresponding path program 83 times [2022-01-19 07:05:24,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:05:24,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981453872] [2022-01-19 07:05:24,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:05:24,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:05:24,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:05:24,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:05:24,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:05:24,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981453872] [2022-01-19 07:05:24,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981453872] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:05:24,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:05:24,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:05:24,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754695589] [2022-01-19 07:05:24,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:05:24,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:05:24,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:05:24,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:05:24,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:05:24,798 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:05:24,798 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 755 places, 628 transitions, 12696 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:24,798 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:05:24,798 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:05:24,798 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:05:26,253 INFO L129 PetriNetUnfolder]: 929/3218 cut-off events. [2022-01-19 07:05:26,253 INFO L130 PetriNetUnfolder]: For 91226/91232 co-relation queries the response was YES. [2022-01-19 07:05:26,320 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23398 conditions, 3218 events. 929/3218 cut-off events. For 91226/91232 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 25677 event pairs, 466 based on Foata normal form. 1/3111 useless extension candidates. Maximal degree in co-relation 23108. Up to 924 conditions per place. [2022-01-19 07:05:26,333 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 367 selfloop transitions, 138 changer transitions 57/703 dead transitions. [2022-01-19 07:05:26,333 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 762 places, 703 transitions, 15883 flow [2022-01-19 07:05:26,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:05:26,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:05:26,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4819 transitions. [2022-01-19 07:05:26,335 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7649206349206349 [2022-01-19 07:05:26,335 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4819 transitions. [2022-01-19 07:05:26,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4819 transitions. [2022-01-19 07:05:26,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:05:26,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4819 transitions. [2022-01-19 07:05:26,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.63333333333333) internal successors, (4819), 30 states have internal predecessors, (4819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:26,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:26,341 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:26,341 INFO L186 Difference]: Start difference. First operand has 755 places, 628 transitions, 12696 flow. Second operand 30 states and 4819 transitions. [2022-01-19 07:05:26,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 762 places, 703 transitions, 15883 flow [2022-01-19 07:05:26,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 739 places, 703 transitions, 15241 flow, removed 202 selfloop flow, removed 23 redundant places. [2022-01-19 07:05:26,997 INFO L242 Difference]: Finished difference. Result has 751 places, 616 transitions, 12277 flow [2022-01-19 07:05:26,998 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12278, PETRI_DIFFERENCE_MINUEND_PLACES=710, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=12277, PETRI_PLACES=751, PETRI_TRANSITIONS=616} [2022-01-19 07:05:26,998 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 564 predicate places. [2022-01-19 07:05:26,998 INFO L470 AbstractCegarLoop]: Abstraction has has 751 places, 616 transitions, 12277 flow [2022-01-19 07:05:26,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:26,999 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:05:26,999 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:05:26,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2022-01-19 07:05:26,999 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:05:26,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:05:26,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1718307320, now seen corresponding path program 84 times [2022-01-19 07:05:26,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:05:27,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693228990] [2022-01-19 07:05:27,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:05:27,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:05:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:05:27,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:05:27,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:05:27,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693228990] [2022-01-19 07:05:27,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693228990] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:05:27,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:05:27,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:05:27,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41551796] [2022-01-19 07:05:27,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:05:27,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:05:27,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:05:27,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:05:27,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:05:27,106 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:05:27,107 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 751 places, 616 transitions, 12277 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:27,107 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:05:27,107 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:05:27,107 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:05:28,622 INFO L129 PetriNetUnfolder]: 939/3241 cut-off events. [2022-01-19 07:05:28,622 INFO L130 PetriNetUnfolder]: For 85672/85678 co-relation queries the response was YES. [2022-01-19 07:05:28,696 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23374 conditions, 3241 events. 939/3241 cut-off events. For 85672/85678 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 26046 event pairs, 484 based on Foata normal form. 1/3134 useless extension candidates. Maximal degree in co-relation 23091. Up to 926 conditions per place. [2022-01-19 07:05:28,708 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 357 selfloop transitions, 163 changer transitions 55/716 dead transitions. [2022-01-19 07:05:28,708 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 753 places, 716 transitions, 15870 flow [2022-01-19 07:05:28,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:05:28,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:05:28,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4829 transitions. [2022-01-19 07:05:28,710 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7665079365079365 [2022-01-19 07:05:28,710 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4829 transitions. [2022-01-19 07:05:28,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4829 transitions. [2022-01-19 07:05:28,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:05:28,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4829 transitions. [2022-01-19 07:05:28,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.96666666666667) internal successors, (4829), 30 states have internal predecessors, (4829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:28,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:28,716 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:28,716 INFO L186 Difference]: Start difference. First operand has 751 places, 616 transitions, 12277 flow. Second operand 30 states and 4829 transitions. [2022-01-19 07:05:28,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 753 places, 716 transitions, 15870 flow [2022-01-19 07:05:29,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 724 places, 716 transitions, 15389 flow, removed 39 selfloop flow, removed 29 redundant places. [2022-01-19 07:05:29,328 INFO L242 Difference]: Finished difference. Result has 739 places, 632 transitions, 12755 flow [2022-01-19 07:05:29,329 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11867, PETRI_DIFFERENCE_MINUEND_PLACES=695, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=12755, PETRI_PLACES=739, PETRI_TRANSITIONS=632} [2022-01-19 07:05:29,329 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 552 predicate places. [2022-01-19 07:05:29,329 INFO L470 AbstractCegarLoop]: Abstraction has has 739 places, 632 transitions, 12755 flow [2022-01-19 07:05:29,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:29,329 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:05:29,329 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:05:29,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2022-01-19 07:05:29,329 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:05:29,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:05:29,330 INFO L85 PathProgramCache]: Analyzing trace with hash -748239972, now seen corresponding path program 85 times [2022-01-19 07:05:29,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:05:29,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769742552] [2022-01-19 07:05:29,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:05:29,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:05:29,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:05:29,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:05:29,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:05:29,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769742552] [2022-01-19 07:05:29,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769742552] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:05:29,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:05:29,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:05:29,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536500201] [2022-01-19 07:05:29,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:05:29,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:05:29,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:05:29,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:05:29,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:05:29,460 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:05:29,460 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 739 places, 632 transitions, 12755 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:29,460 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:05:29,460 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:05:29,460 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:05:30,896 INFO L129 PetriNetUnfolder]: 943/3177 cut-off events. [2022-01-19 07:05:30,897 INFO L130 PetriNetUnfolder]: For 83522/83542 co-relation queries the response was YES. [2022-01-19 07:05:31,055 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23388 conditions, 3177 events. 943/3177 cut-off events. For 83522/83542 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 25343 event pairs, 448 based on Foata normal form. 3/3072 useless extension candidates. Maximal degree in co-relation 23108. Up to 930 conditions per place. [2022-01-19 07:05:31,066 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 353 selfloop transitions, 173 changer transitions 55/722 dead transitions. [2022-01-19 07:05:31,066 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 752 places, 722 transitions, 16154 flow [2022-01-19 07:05:31,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:05:31,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:05:31,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4670 transitions. [2022-01-19 07:05:31,068 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7668308702791461 [2022-01-19 07:05:31,068 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4670 transitions. [2022-01-19 07:05:31,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4670 transitions. [2022-01-19 07:05:31,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:05:31,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4670 transitions. [2022-01-19 07:05:31,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 161.0344827586207) internal successors, (4670), 29 states have internal predecessors, (4670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:31,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:31,074 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:31,074 INFO L186 Difference]: Start difference. First operand has 739 places, 632 transitions, 12755 flow. Second operand 29 states and 4670 transitions. [2022-01-19 07:05:31,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 752 places, 722 transitions, 16154 flow [2022-01-19 07:05:31,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 741 places, 722 transitions, 15748 flow, removed 114 selfloop flow, removed 11 redundant places. [2022-01-19 07:05:31,613 INFO L242 Difference]: Finished difference. Result has 755 places, 643 transitions, 13183 flow [2022-01-19 07:05:31,613 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12458, PETRI_DIFFERENCE_MINUEND_PLACES=713, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=13183, PETRI_PLACES=755, PETRI_TRANSITIONS=643} [2022-01-19 07:05:31,614 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 568 predicate places. [2022-01-19 07:05:31,614 INFO L470 AbstractCegarLoop]: Abstraction has has 755 places, 643 transitions, 13183 flow [2022-01-19 07:05:31,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:31,614 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:05:31,614 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:05:31,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-01-19 07:05:31,614 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:05:31,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:05:31,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1659146500, now seen corresponding path program 86 times [2022-01-19 07:05:31,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:05:31,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795214868] [2022-01-19 07:05:31,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:05:31,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:05:31,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:05:31,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:05:31,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:05:31,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795214868] [2022-01-19 07:05:31,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795214868] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:05:31,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:05:31,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:05:31,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142095551] [2022-01-19 07:05:31,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:05:31,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:05:31,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:05:31,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:05:31,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:05:31,722 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:05:31,722 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 755 places, 643 transitions, 13183 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:31,722 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:05:31,722 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:05:31,722 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:05:33,251 INFO L129 PetriNetUnfolder]: 936/3169 cut-off events. [2022-01-19 07:05:33,252 INFO L130 PetriNetUnfolder]: For 84331/84351 co-relation queries the response was YES. [2022-01-19 07:05:33,315 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23245 conditions, 3169 events. 936/3169 cut-off events. For 84331/84351 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 25329 event pairs, 429 based on Foata normal form. 3/3065 useless extension candidates. Maximal degree in co-relation 22959. Up to 932 conditions per place. [2022-01-19 07:05:33,326 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 390 selfloop transitions, 148 changer transitions 57/736 dead transitions. [2022-01-19 07:05:33,326 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 769 places, 736 transitions, 16710 flow [2022-01-19 07:05:33,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:05:33,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:05:33,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4668 transitions. [2022-01-19 07:05:33,329 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7665024630541872 [2022-01-19 07:05:33,329 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4668 transitions. [2022-01-19 07:05:33,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4668 transitions. [2022-01-19 07:05:33,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:05:33,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4668 transitions. [2022-01-19 07:05:33,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.9655172413793) internal successors, (4668), 29 states have internal predecessors, (4668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:33,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:33,335 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:33,335 INFO L186 Difference]: Start difference. First operand has 755 places, 643 transitions, 13183 flow. Second operand 29 states and 4668 transitions. [2022-01-19 07:05:33,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 769 places, 736 transitions, 16710 flow [2022-01-19 07:05:33,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 756 places, 736 transitions, 16380 flow, removed 53 selfloop flow, removed 13 redundant places. [2022-01-19 07:05:33,968 INFO L242 Difference]: Finished difference. Result has 769 places, 649 transitions, 13397 flow [2022-01-19 07:05:33,969 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12880, PETRI_DIFFERENCE_MINUEND_PLACES=728, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=13397, PETRI_PLACES=769, PETRI_TRANSITIONS=649} [2022-01-19 07:05:33,969 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 582 predicate places. [2022-01-19 07:05:33,969 INFO L470 AbstractCegarLoop]: Abstraction has has 769 places, 649 transitions, 13397 flow [2022-01-19 07:05:33,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:33,969 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:05:33,969 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:05:33,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-01-19 07:05:33,970 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:05:33,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:05:33,970 INFO L85 PathProgramCache]: Analyzing trace with hash -809966992, now seen corresponding path program 87 times [2022-01-19 07:05:33,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:05:33,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620723512] [2022-01-19 07:05:33,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:05:33,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:05:33,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:05:34,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:05:34,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:05:34,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620723512] [2022-01-19 07:05:34,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620723512] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:05:34,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:05:34,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:05:34,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423472928] [2022-01-19 07:05:34,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:05:34,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:05:34,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:05:34,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:05:34,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:05:34,081 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:05:34,082 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 769 places, 649 transitions, 13397 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:34,082 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:05:34,082 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:05:34,082 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:05:35,536 INFO L129 PetriNetUnfolder]: 939/3266 cut-off events. [2022-01-19 07:05:35,537 INFO L130 PetriNetUnfolder]: For 88164/88170 co-relation queries the response was YES. [2022-01-19 07:05:35,600 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23607 conditions, 3266 events. 939/3266 cut-off events. For 88164/88170 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 26308 event pairs, 458 based on Foata normal form. 1/3156 useless extension candidates. Maximal degree in co-relation 23316. Up to 934 conditions per place. [2022-01-19 07:05:35,612 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 371 selfloop transitions, 178 changer transitions 56/746 dead transitions. [2022-01-19 07:05:35,613 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 783 places, 746 transitions, 17071 flow [2022-01-19 07:05:35,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:05:35,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:05:35,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4664 transitions. [2022-01-19 07:05:35,615 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658456486042693 [2022-01-19 07:05:35,615 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4664 transitions. [2022-01-19 07:05:35,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4664 transitions. [2022-01-19 07:05:35,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:05:35,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4664 transitions. [2022-01-19 07:05:35,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.82758620689654) internal successors, (4664), 29 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:35,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:35,621 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:35,621 INFO L186 Difference]: Start difference. First operand has 769 places, 649 transitions, 13397 flow. Second operand 29 states and 4664 transitions. [2022-01-19 07:05:35,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 783 places, 746 transitions, 17071 flow [2022-01-19 07:05:36,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 766 places, 746 transitions, 16646 flow, removed 96 selfloop flow, removed 17 redundant places. [2022-01-19 07:05:36,247 INFO L242 Difference]: Finished difference. Result has 780 places, 660 transitions, 13779 flow [2022-01-19 07:05:36,247 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13041, PETRI_DIFFERENCE_MINUEND_PLACES=738, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=649, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=13779, PETRI_PLACES=780, PETRI_TRANSITIONS=660} [2022-01-19 07:05:36,247 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 593 predicate places. [2022-01-19 07:05:36,247 INFO L470 AbstractCegarLoop]: Abstraction has has 780 places, 660 transitions, 13779 flow [2022-01-19 07:05:36,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:36,248 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:05:36,248 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:05:36,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2022-01-19 07:05:36,248 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:05:36,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:05:36,248 INFO L85 PathProgramCache]: Analyzing trace with hash 145920860, now seen corresponding path program 88 times [2022-01-19 07:05:36,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:05:36,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387800430] [2022-01-19 07:05:36,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:05:36,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:05:36,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:05:36,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:05:36,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:05:36,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387800430] [2022-01-19 07:05:36,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387800430] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:05:36,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:05:36,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:05:36,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608961420] [2022-01-19 07:05:36,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:05:36,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:05:36,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:05:36,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:05:36,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:05:36,349 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:05:36,350 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 780 places, 660 transitions, 13779 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:36,350 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:05:36,350 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:05:36,350 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:05:37,802 INFO L129 PetriNetUnfolder]: 940/3189 cut-off events. [2022-01-19 07:05:37,803 INFO L130 PetriNetUnfolder]: For 88570/88590 co-relation queries the response was YES. [2022-01-19 07:05:37,882 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23614 conditions, 3189 events. 940/3189 cut-off events. For 88570/88590 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 25433 event pairs, 432 based on Foata normal form. 3/3085 useless extension candidates. Maximal degree in co-relation 23320. Up to 937 conditions per place. [2022-01-19 07:05:37,895 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 408 selfloop transitions, 151 changer transitions 58/758 dead transitions. [2022-01-19 07:05:37,895 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 793 places, 758 transitions, 17570 flow [2022-01-19 07:05:37,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 07:05:37,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 07:05:37,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4511 transitions. [2022-01-19 07:05:37,898 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7671768707482993 [2022-01-19 07:05:37,898 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4511 transitions. [2022-01-19 07:05:37,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4511 transitions. [2022-01-19 07:05:37,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:05:37,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4511 transitions. [2022-01-19 07:05:37,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 161.10714285714286) internal successors, (4511), 28 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:37,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:37,903 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:37,904 INFO L186 Difference]: Start difference. First operand has 780 places, 660 transitions, 13779 flow. Second operand 28 states and 4511 transitions. [2022-01-19 07:05:37,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 793 places, 758 transitions, 17570 flow [2022-01-19 07:05:38,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 780 places, 758 transitions, 17157 flow, removed 70 selfloop flow, removed 13 redundant places. [2022-01-19 07:05:38,674 INFO L242 Difference]: Finished difference. Result has 792 places, 668 transitions, 13980 flow [2022-01-19 07:05:38,675 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13412, PETRI_DIFFERENCE_MINUEND_PLACES=753, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=13980, PETRI_PLACES=792, PETRI_TRANSITIONS=668} [2022-01-19 07:05:38,675 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 605 predicate places. [2022-01-19 07:05:38,675 INFO L470 AbstractCegarLoop]: Abstraction has has 792 places, 668 transitions, 13980 flow [2022-01-19 07:05:38,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:38,675 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:05:38,675 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:05:38,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2022-01-19 07:05:38,675 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:05:38,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:05:38,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1583574768, now seen corresponding path program 89 times [2022-01-19 07:05:38,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:05:38,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108629313] [2022-01-19 07:05:38,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:05:38,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:05:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:05:38,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:05:38,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:05:38,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108629313] [2022-01-19 07:05:38,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108629313] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:05:38,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:05:38,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:05:38,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748310215] [2022-01-19 07:05:38,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:05:38,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:05:38,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:05:38,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:05:38,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:05:38,793 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:05:38,794 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 792 places, 668 transitions, 13980 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:38,794 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:05:38,794 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:05:38,794 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:05:40,344 INFO L129 PetriNetUnfolder]: 960/3234 cut-off events. [2022-01-19 07:05:40,345 INFO L130 PetriNetUnfolder]: For 92213/92233 co-relation queries the response was YES. [2022-01-19 07:05:40,426 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24328 conditions, 3234 events. 960/3234 cut-off events. For 92213/92233 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 25903 event pairs, 437 based on Foata normal form. 3/3131 useless extension candidates. Maximal degree in co-relation 24030. Up to 942 conditions per place. [2022-01-19 07:05:40,438 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 357 selfloop transitions, 217 changer transitions 54/769 dead transitions. [2022-01-19 07:05:40,438 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 808 places, 769 transitions, 17881 flow [2022-01-19 07:05:40,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:05:40,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:05:40,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4821 transitions. [2022-01-19 07:05:40,441 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7652380952380953 [2022-01-19 07:05:40,441 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4821 transitions. [2022-01-19 07:05:40,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4821 transitions. [2022-01-19 07:05:40,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:05:40,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4821 transitions. [2022-01-19 07:05:40,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.7) internal successors, (4821), 30 states have internal predecessors, (4821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:40,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:40,447 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:40,447 INFO L186 Difference]: Start difference. First operand has 792 places, 668 transitions, 13980 flow. Second operand 30 states and 4821 transitions. [2022-01-19 07:05:40,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 808 places, 769 transitions, 17881 flow [2022-01-19 07:05:41,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 793 places, 769 transitions, 17516 flow, removed 56 selfloop flow, removed 15 redundant places. [2022-01-19 07:05:41,147 INFO L242 Difference]: Finished difference. Result has 809 places, 685 transitions, 14790 flow [2022-01-19 07:05:41,147 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13657, PETRI_DIFFERENCE_MINUEND_PLACES=764, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=14790, PETRI_PLACES=809, PETRI_TRANSITIONS=685} [2022-01-19 07:05:41,147 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 622 predicate places. [2022-01-19 07:05:41,147 INFO L470 AbstractCegarLoop]: Abstraction has has 809 places, 685 transitions, 14790 flow [2022-01-19 07:05:41,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:41,148 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:05:41,148 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:05:41,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2022-01-19 07:05:41,148 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:05:41,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:05:41,148 INFO L85 PathProgramCache]: Analyzing trace with hash -993283182, now seen corresponding path program 90 times [2022-01-19 07:05:41,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:05:41,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781151] [2022-01-19 07:05:41,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:05:41,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:05:41,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:05:41,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:05:41,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:05:41,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781151] [2022-01-19 07:05:41,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781151] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:05:41,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:05:41,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:05:41,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433346315] [2022-01-19 07:05:41,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:05:41,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:05:41,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:05:41,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:05:41,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:05:41,254 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:05:41,254 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 809 places, 685 transitions, 14790 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:41,254 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:05:41,254 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:05:41,254 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:05:42,756 INFO L129 PetriNetUnfolder]: 955/3323 cut-off events. [2022-01-19 07:05:42,756 INFO L130 PetriNetUnfolder]: For 99254/99260 co-relation queries the response was YES. [2022-01-19 07:05:42,824 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24619 conditions, 3323 events. 955/3323 cut-off events. For 99254/99260 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 27026 event pairs, 439 based on Foata normal form. 1/3218 useless extension candidates. Maximal degree in co-relation 24314. Up to 946 conditions per place. [2022-01-19 07:05:42,837 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 373 selfloop transitions, 217 changer transitions 60/791 dead transitions. [2022-01-19 07:05:42,837 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 820 places, 791 transitions, 18989 flow [2022-01-19 07:05:42,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 07:05:42,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 07:05:42,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4344 transitions. [2022-01-19 07:05:42,839 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7661375661375661 [2022-01-19 07:05:42,839 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4344 transitions. [2022-01-19 07:05:42,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4344 transitions. [2022-01-19 07:05:42,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:05:42,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4344 transitions. [2022-01-19 07:05:42,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 160.88888888888889) internal successors, (4344), 27 states have internal predecessors, (4344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:42,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:42,845 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:42,845 INFO L186 Difference]: Start difference. First operand has 809 places, 685 transitions, 14790 flow. Second operand 27 states and 4344 transitions. [2022-01-19 07:05:42,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 820 places, 791 transitions, 18989 flow [2022-01-19 07:05:43,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 807 places, 791 transitions, 18392 flow, removed 191 selfloop flow, removed 13 redundant places. [2022-01-19 07:05:43,596 INFO L242 Difference]: Finished difference. Result has 817 places, 689 transitions, 14909 flow [2022-01-19 07:05:43,596 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14333, PETRI_DIFFERENCE_MINUEND_PLACES=781, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=685, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=14909, PETRI_PLACES=817, PETRI_TRANSITIONS=689} [2022-01-19 07:05:43,596 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 630 predicate places. [2022-01-19 07:05:43,597 INFO L470 AbstractCegarLoop]: Abstraction has has 817 places, 689 transitions, 14909 flow [2022-01-19 07:05:43,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:43,597 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:05:43,597 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:05:43,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2022-01-19 07:05:43,597 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:05:43,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:05:43,597 INFO L85 PathProgramCache]: Analyzing trace with hash 292811292, now seen corresponding path program 91 times [2022-01-19 07:05:43,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:05:43,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448764260] [2022-01-19 07:05:43,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:05:43,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:05:43,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:05:43,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:05:43,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:05:43,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448764260] [2022-01-19 07:05:43,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448764260] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:05:43,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:05:43,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:05:43,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932243157] [2022-01-19 07:05:43,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:05:43,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:05:43,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:05:43,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:05:43,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:05:43,705 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:05:43,706 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 817 places, 689 transitions, 14909 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:43,706 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:05:43,706 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:05:43,706 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:05:45,186 INFO L129 PetriNetUnfolder]: 934/3163 cut-off events. [2022-01-19 07:05:45,186 INFO L130 PetriNetUnfolder]: For 92427/92447 co-relation queries the response was YES. [2022-01-19 07:05:45,263 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23809 conditions, 3163 events. 934/3163 cut-off events. For 92427/92447 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 25150 event pairs, 419 based on Foata normal form. 3/3060 useless extension candidates. Maximal degree in co-relation 23503. Up to 943 conditions per place. [2022-01-19 07:05:45,275 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 420 selfloop transitions, 132 changer transitions 61/754 dead transitions. [2022-01-19 07:05:45,275 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 834 places, 754 transitions, 17895 flow [2022-01-19 07:05:45,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:05:45,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:05:45,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4813 transitions. [2022-01-19 07:05:45,278 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763968253968254 [2022-01-19 07:05:45,278 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4813 transitions. [2022-01-19 07:05:45,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4813 transitions. [2022-01-19 07:05:45,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:05:45,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4813 transitions. [2022-01-19 07:05:45,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:45,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:45,284 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:45,284 INFO L186 Difference]: Start difference. First operand has 817 places, 689 transitions, 14909 flow. Second operand 30 states and 4813 transitions. [2022-01-19 07:05:45,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 834 places, 754 transitions, 17895 flow [2022-01-19 07:05:46,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 814 places, 754 transitions, 17270 flow, removed 75 selfloop flow, removed 20 redundant places. [2022-01-19 07:05:46,101 INFO L242 Difference]: Finished difference. Result has 823 places, 662 transitions, 13894 flow [2022-01-19 07:05:46,102 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14338, PETRI_DIFFERENCE_MINUEND_PLACES=785, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=689, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=13894, PETRI_PLACES=823, PETRI_TRANSITIONS=662} [2022-01-19 07:05:46,102 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 636 predicate places. [2022-01-19 07:05:46,102 INFO L470 AbstractCegarLoop]: Abstraction has has 823 places, 662 transitions, 13894 flow [2022-01-19 07:05:46,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:46,103 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:05:46,103 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:05:46,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2022-01-19 07:05:46,103 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:05:46,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:05:46,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1500848246, now seen corresponding path program 92 times [2022-01-19 07:05:46,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:05:46,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014955097] [2022-01-19 07:05:46,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:05:46,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:05:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:05:46,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:05:46,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:05:46,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014955097] [2022-01-19 07:05:46,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014955097] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:05:46,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:05:46,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:05:46,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002716570] [2022-01-19 07:05:46,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:05:46,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:05:46,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:05:46,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:05:46,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:05:46,206 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:05:46,207 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 823 places, 662 transitions, 13894 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:46,207 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:05:46,207 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:05:46,207 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:05:47,981 INFO L129 PetriNetUnfolder]: 951/3245 cut-off events. [2022-01-19 07:05:47,982 INFO L130 PetriNetUnfolder]: For 96091/96111 co-relation queries the response was YES. [2022-01-19 07:05:48,052 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24174 conditions, 3245 events. 951/3245 cut-off events. For 96091/96111 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 26104 event pairs, 416 based on Foata normal form. 3/3145 useless extension candidates. Maximal degree in co-relation 23870. Up to 921 conditions per place. [2022-01-19 07:05:48,063 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 405 selfloop transitions, 181 changer transitions 91/818 dead transitions. [2022-01-19 07:05:48,063 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 830 places, 818 transitions, 19702 flow [2022-01-19 07:05:48,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-19 07:05:48,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-01-19 07:05:48,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6866 transitions. [2022-01-19 07:05:48,066 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7603543743078627 [2022-01-19 07:05:48,066 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6866 transitions. [2022-01-19 07:05:48,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6866 transitions. [2022-01-19 07:05:48,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:05:48,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6866 transitions. [2022-01-19 07:05:48,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 159.67441860465115) internal successors, (6866), 43 states have internal predecessors, (6866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:48,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:48,074 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:48,074 INFO L186 Difference]: Start difference. First operand has 823 places, 662 transitions, 13894 flow. Second operand 43 states and 6866 transitions. [2022-01-19 07:05:48,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 830 places, 818 transitions, 19702 flow [2022-01-19 07:05:48,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 802 places, 818 transitions, 18929 flow, removed 49 selfloop flow, removed 28 redundant places. [2022-01-19 07:05:48,767 INFO L242 Difference]: Finished difference. Result has 834 places, 679 transitions, 14604 flow [2022-01-19 07:05:48,767 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13409, PETRI_DIFFERENCE_MINUEND_PLACES=760, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=14604, PETRI_PLACES=834, PETRI_TRANSITIONS=679} [2022-01-19 07:05:48,767 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 647 predicate places. [2022-01-19 07:05:48,767 INFO L470 AbstractCegarLoop]: Abstraction has has 834 places, 679 transitions, 14604 flow [2022-01-19 07:05:48,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:48,768 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:05:48,768 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:05:48,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2022-01-19 07:05:48,768 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:05:48,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:05:48,768 INFO L85 PathProgramCache]: Analyzing trace with hash 544131094, now seen corresponding path program 93 times [2022-01-19 07:05:48,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:05:48,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274447464] [2022-01-19 07:05:48,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:05:48,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:05:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:05:48,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:05:48,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:05:48,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274447464] [2022-01-19 07:05:48,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274447464] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:05:48,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:05:48,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:05:48,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294663255] [2022-01-19 07:05:48,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:05:48,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:05:48,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:05:48,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:05:48,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:05:48,884 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:05:48,885 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 834 places, 679 transitions, 14604 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:48,885 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:05:48,885 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:05:48,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:05:50,391 INFO L129 PetriNetUnfolder]: 949/3302 cut-off events. [2022-01-19 07:05:50,391 INFO L130 PetriNetUnfolder]: For 98131/98137 co-relation queries the response was YES. [2022-01-19 07:05:50,463 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24497 conditions, 3302 events. 949/3302 cut-off events. For 98131/98137 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 26688 event pairs, 461 based on Foata normal form. 1/3195 useless extension candidates. Maximal degree in co-relation 24177. Up to 966 conditions per place. [2022-01-19 07:05:50,475 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 403 selfloop transitions, 175 changer transitions 55/774 dead transitions. [2022-01-19 07:05:50,475 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 832 places, 774 transitions, 18615 flow [2022-01-19 07:05:50,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:05:50,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:05:50,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4666 transitions. [2022-01-19 07:05:50,477 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7661740558292283 [2022-01-19 07:05:50,477 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4666 transitions. [2022-01-19 07:05:50,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4666 transitions. [2022-01-19 07:05:50,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:05:50,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4666 transitions. [2022-01-19 07:05:50,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.89655172413794) internal successors, (4666), 29 states have internal predecessors, (4666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:50,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:50,483 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:50,483 INFO L186 Difference]: Start difference. First operand has 834 places, 679 transitions, 14604 flow. Second operand 29 states and 4666 transitions. [2022-01-19 07:05:50,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 832 places, 774 transitions, 18615 flow [2022-01-19 07:05:51,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 796 places, 774 transitions, 17703 flow, removed 274 selfloop flow, removed 36 redundant places. [2022-01-19 07:05:51,233 INFO L242 Difference]: Finished difference. Result has 810 places, 691 transitions, 14867 flow [2022-01-19 07:05:51,233 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14085, PETRI_DIFFERENCE_MINUEND_PLACES=768, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=14867, PETRI_PLACES=810, PETRI_TRANSITIONS=691} [2022-01-19 07:05:51,233 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 623 predicate places. [2022-01-19 07:05:51,233 INFO L470 AbstractCegarLoop]: Abstraction has has 810 places, 691 transitions, 14867 flow [2022-01-19 07:05:51,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:51,233 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:05:51,234 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:05:51,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2022-01-19 07:05:51,234 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:05:51,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:05:51,234 INFO L85 PathProgramCache]: Analyzing trace with hash 480670358, now seen corresponding path program 94 times [2022-01-19 07:05:51,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:05:51,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848748381] [2022-01-19 07:05:51,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:05:51,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:05:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:05:51,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:05:51,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:05:51,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848748381] [2022-01-19 07:05:51,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848748381] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:05:51,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:05:51,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:05:51,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498274839] [2022-01-19 07:05:51,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:05:51,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:05:51,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:05:51,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:05:51,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:05:51,340 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:05:51,341 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 810 places, 691 transitions, 14867 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:51,341 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:05:51,341 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:05:51,341 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:05:52,924 INFO L129 PetriNetUnfolder]: 921/3139 cut-off events. [2022-01-19 07:05:52,924 INFO L130 PetriNetUnfolder]: For 85585/85605 co-relation queries the response was YES. [2022-01-19 07:05:52,981 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22952 conditions, 3139 events. 921/3139 cut-off events. For 85585/85605 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 25024 event pairs, 402 based on Foata normal form. 3/3037 useless extension candidates. Maximal degree in co-relation 22650. Up to 964 conditions per place. [2022-01-19 07:05:52,992 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 362 selfloop transitions, 199 changer transitions 64/766 dead transitions. [2022-01-19 07:05:52,993 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 825 places, 766 transitions, 17906 flow [2022-01-19 07:05:52,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:05:52,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:05:52,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4802 transitions. [2022-01-19 07:05:52,995 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7622222222222222 [2022-01-19 07:05:52,995 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4802 transitions. [2022-01-19 07:05:52,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4802 transitions. [2022-01-19 07:05:52,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:05:52,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4802 transitions. [2022-01-19 07:05:52,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.06666666666666) internal successors, (4802), 30 states have internal predecessors, (4802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:53,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:53,001 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:53,001 INFO L186 Difference]: Start difference. First operand has 810 places, 691 transitions, 14867 flow. Second operand 30 states and 4802 transitions. [2022-01-19 07:05:53,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 825 places, 766 transitions, 17906 flow [2022-01-19 07:05:53,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 812 places, 766 transitions, 17532 flow, removed 79 selfloop flow, removed 13 redundant places. [2022-01-19 07:05:53,671 INFO L242 Difference]: Finished difference. Result has 823 places, 657 transitions, 13962 flow [2022-01-19 07:05:53,672 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14522, PETRI_DIFFERENCE_MINUEND_PLACES=783, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=13962, PETRI_PLACES=823, PETRI_TRANSITIONS=657} [2022-01-19 07:05:53,672 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 636 predicate places. [2022-01-19 07:05:53,672 INFO L470 AbstractCegarLoop]: Abstraction has has 823 places, 657 transitions, 13962 flow [2022-01-19 07:05:53,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:53,672 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:05:53,672 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:05:53,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2022-01-19 07:05:53,673 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:05:53,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:05:53,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1195198250, now seen corresponding path program 95 times [2022-01-19 07:05:53,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:05:53,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142790110] [2022-01-19 07:05:53,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:05:53,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:05:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:05:53,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:05:53,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:05:53,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142790110] [2022-01-19 07:05:53,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142790110] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:05:53,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:05:53,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:05:53,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384304377] [2022-01-19 07:05:53,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:05:53,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:05:53,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:05:53,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:05:53,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:05:53,774 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:05:53,775 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 823 places, 657 transitions, 13962 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:53,775 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:05:53,775 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:05:53,775 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:05:55,414 INFO L129 PetriNetUnfolder]: 953/3241 cut-off events. [2022-01-19 07:05:55,414 INFO L130 PetriNetUnfolder]: For 93708/93728 co-relation queries the response was YES. [2022-01-19 07:05:55,485 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24195 conditions, 3241 events. 953/3241 cut-off events. For 93708/93728 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 26056 event pairs, 423 based on Foata normal form. 3/3138 useless extension candidates. Maximal degree in co-relation 23890. Up to 966 conditions per place. [2022-01-19 07:05:55,497 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 396 selfloop transitions, 179 changer transitions 69/785 dead transitions. [2022-01-19 07:05:55,498 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 819 places, 785 transitions, 18694 flow [2022-01-19 07:05:55,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:05:55,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:05:55,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6082 transitions. [2022-01-19 07:05:55,500 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7621553884711779 [2022-01-19 07:05:55,500 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6082 transitions. [2022-01-19 07:05:55,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6082 transitions. [2022-01-19 07:05:55,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:05:55,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6082 transitions. [2022-01-19 07:05:55,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.05263157894737) internal successors, (6082), 38 states have internal predecessors, (6082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:55,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:55,508 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:55,508 INFO L186 Difference]: Start difference. First operand has 823 places, 657 transitions, 13962 flow. Second operand 38 states and 6082 transitions. [2022-01-19 07:05:55,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 819 places, 785 transitions, 18694 flow [2022-01-19 07:05:56,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 787 places, 785 transitions, 17659 flow, removed 42 selfloop flow, removed 32 redundant places. [2022-01-19 07:05:56,178 INFO L242 Difference]: Finished difference. Result has 810 places, 677 transitions, 14260 flow [2022-01-19 07:05:56,178 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13131, PETRI_DIFFERENCE_MINUEND_PLACES=750, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=14260, PETRI_PLACES=810, PETRI_TRANSITIONS=677} [2022-01-19 07:05:56,179 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 623 predicate places. [2022-01-19 07:05:56,179 INFO L470 AbstractCegarLoop]: Abstraction has has 810 places, 677 transitions, 14260 flow [2022-01-19 07:05:56,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:56,179 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:05:56,179 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:05:56,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-01-19 07:05:56,179 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:05:56,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:05:56,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1704849108, now seen corresponding path program 96 times [2022-01-19 07:05:56,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:05:56,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12691180] [2022-01-19 07:05:56,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:05:56,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:05:56,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:05:56,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:05:56,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:05:56,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12691180] [2022-01-19 07:05:56,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12691180] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:05:56,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:05:56,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:05:56,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168868651] [2022-01-19 07:05:56,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:05:56,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:05:56,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:05:56,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:05:56,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:05:56,286 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:05:56,287 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 810 places, 677 transitions, 14260 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:56,287 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:05:56,287 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:05:56,287 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:05:58,054 INFO L129 PetriNetUnfolder]: 954/3253 cut-off events. [2022-01-19 07:05:58,054 INFO L130 PetriNetUnfolder]: For 90401/90421 co-relation queries the response was YES. [2022-01-19 07:05:58,135 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23962 conditions, 3253 events. 954/3253 cut-off events. For 90401/90421 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 26265 event pairs, 424 based on Foata normal form. 3/3147 useless extension candidates. Maximal degree in co-relation 23654. Up to 974 conditions per place. [2022-01-19 07:05:58,147 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 403 selfloop transitions, 173 changer transitions 68/785 dead transitions. [2022-01-19 07:05:58,148 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 822 places, 785 transitions, 18405 flow [2022-01-19 07:05:58,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 07:05:58,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 07:05:58,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5928 transitions. [2022-01-19 07:05:58,150 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7629343629343629 [2022-01-19 07:05:58,150 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5928 transitions. [2022-01-19 07:05:58,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5928 transitions. [2022-01-19 07:05:58,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:05:58,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5928 transitions. [2022-01-19 07:05:58,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.21621621621622) internal successors, (5928), 37 states have internal predecessors, (5928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:58,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:58,157 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:58,157 INFO L186 Difference]: Start difference. First operand has 810 places, 677 transitions, 14260 flow. Second operand 37 states and 5928 transitions. [2022-01-19 07:05:58,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 822 places, 785 transitions, 18405 flow [2022-01-19 07:05:58,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 802 places, 785 transitions, 17859 flow, removed 121 selfloop flow, removed 20 redundant places. [2022-01-19 07:05:58,861 INFO L242 Difference]: Finished difference. Result has 824 places, 684 transitions, 14561 flow [2022-01-19 07:05:58,861 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13874, PETRI_DIFFERENCE_MINUEND_PLACES=766, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=14561, PETRI_PLACES=824, PETRI_TRANSITIONS=684} [2022-01-19 07:05:58,861 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 637 predicate places. [2022-01-19 07:05:58,861 INFO L470 AbstractCegarLoop]: Abstraction has has 824 places, 684 transitions, 14561 flow [2022-01-19 07:05:58,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:58,862 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:05:58,862 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:05:58,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2022-01-19 07:05:58,862 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:05:58,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:05:58,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1787118898, now seen corresponding path program 97 times [2022-01-19 07:05:58,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:05:58,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930728647] [2022-01-19 07:05:58,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:05:58,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:05:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:05:58,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:05:58,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:05:58,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930728647] [2022-01-19 07:05:58,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930728647] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:05:58,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:05:58,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:05:58,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383737041] [2022-01-19 07:05:58,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:05:58,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:05:58,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:05:58,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:05:58,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:05:58,981 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:05:58,982 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 824 places, 684 transitions, 14561 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:05:58,982 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:05:58,982 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:05:58,982 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:06:00,491 INFO L129 PetriNetUnfolder]: 949/3246 cut-off events. [2022-01-19 07:06:00,491 INFO L130 PetriNetUnfolder]: For 90892/90912 co-relation queries the response was YES. [2022-01-19 07:06:00,564 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23831 conditions, 3246 events. 949/3246 cut-off events. For 90892/90912 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 26201 event pairs, 422 based on Foata normal form. 3/3138 useless extension candidates. Maximal degree in co-relation 23517. Up to 992 conditions per place. [2022-01-19 07:06:00,576 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 394 selfloop transitions, 184 changer transitions 60/779 dead transitions. [2022-01-19 07:06:00,576 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 828 places, 779 transitions, 18312 flow [2022-01-19 07:06:00,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 07:06:00,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 07:06:00,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4507 transitions. [2022-01-19 07:06:00,578 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7664965986394557 [2022-01-19 07:06:00,578 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4507 transitions. [2022-01-19 07:06:00,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4507 transitions. [2022-01-19 07:06:00,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:06:00,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4507 transitions. [2022-01-19 07:06:00,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.96428571428572) internal successors, (4507), 28 states have internal predecessors, (4507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:00,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:00,584 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:00,584 INFO L186 Difference]: Start difference. First operand has 824 places, 684 transitions, 14561 flow. Second operand 28 states and 4507 transitions. [2022-01-19 07:06:00,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 828 places, 779 transitions, 18312 flow [2022-01-19 07:06:01,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 802 places, 779 transitions, 17864 flow, removed 97 selfloop flow, removed 26 redundant places. [2022-01-19 07:06:01,317 INFO L242 Difference]: Finished difference. Result has 814 places, 692 transitions, 14858 flow [2022-01-19 07:06:01,317 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14183, PETRI_DIFFERENCE_MINUEND_PLACES=775, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=14858, PETRI_PLACES=814, PETRI_TRANSITIONS=692} [2022-01-19 07:06:01,317 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 627 predicate places. [2022-01-19 07:06:01,317 INFO L470 AbstractCegarLoop]: Abstraction has has 814 places, 692 transitions, 14858 flow [2022-01-19 07:06:01,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:01,318 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:06:01,318 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:06:01,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2022-01-19 07:06:01,318 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:06:01,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:06:01,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1770312740, now seen corresponding path program 98 times [2022-01-19 07:06:01,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:06:01,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696009765] [2022-01-19 07:06:01,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:06:01,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:06:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:06:01,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:06:01,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:06:01,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696009765] [2022-01-19 07:06:01,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696009765] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:06:01,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:06:01,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:06:01,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349249647] [2022-01-19 07:06:01,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:06:01,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:06:01,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:06:01,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:06:01,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:06:01,433 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:06:01,434 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 814 places, 692 transitions, 14858 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:01,434 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:06:01,434 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:06:01,434 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:06:03,084 INFO L129 PetriNetUnfolder]: 943/3232 cut-off events. [2022-01-19 07:06:03,085 INFO L130 PetriNetUnfolder]: For 88901/88921 co-relation queries the response was YES. [2022-01-19 07:06:03,157 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23512 conditions, 3232 events. 943/3232 cut-off events. For 88901/88921 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 26042 event pairs, 421 based on Foata normal form. 3/3127 useless extension candidates. Maximal degree in co-relation 23207. Up to 988 conditions per place. [2022-01-19 07:06:03,170 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 396 selfloop transitions, 185 changer transitions 60/782 dead transitions. [2022-01-19 07:06:03,170 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 830 places, 782 transitions, 18313 flow [2022-01-19 07:06:03,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:06:03,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:06:03,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4820 transitions. [2022-01-19 07:06:03,172 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.765079365079365 [2022-01-19 07:06:03,172 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4820 transitions. [2022-01-19 07:06:03,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4820 transitions. [2022-01-19 07:06:03,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:06:03,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4820 transitions. [2022-01-19 07:06:03,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.66666666666666) internal successors, (4820), 30 states have internal predecessors, (4820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:03,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:03,178 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:03,178 INFO L186 Difference]: Start difference. First operand has 814 places, 692 transitions, 14858 flow. Second operand 30 states and 4820 transitions. [2022-01-19 07:06:03,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 830 places, 782 transitions, 18313 flow [2022-01-19 07:06:03,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 815 places, 782 transitions, 17844 flow, removed 77 selfloop flow, removed 15 redundant places. [2022-01-19 07:06:03,871 INFO L242 Difference]: Finished difference. Result has 828 places, 698 transitions, 15035 flow [2022-01-19 07:06:03,871 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14444, PETRI_DIFFERENCE_MINUEND_PLACES=786, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=15035, PETRI_PLACES=828, PETRI_TRANSITIONS=698} [2022-01-19 07:06:03,872 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 641 predicate places. [2022-01-19 07:06:03,872 INFO L470 AbstractCegarLoop]: Abstraction has has 828 places, 698 transitions, 15035 flow [2022-01-19 07:06:03,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:03,872 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:06:03,872 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:06:03,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2022-01-19 07:06:03,872 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:06:03,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:06:03,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1002110748, now seen corresponding path program 99 times [2022-01-19 07:06:03,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:06:03,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940496810] [2022-01-19 07:06:03,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:06:03,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:06:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:06:03,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:06:03,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:06:03,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940496810] [2022-01-19 07:06:03,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940496810] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:06:03,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:06:03,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:06:03,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515731698] [2022-01-19 07:06:03,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:06:03,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:06:03,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:06:03,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:06:03,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:06:03,990 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:06:03,991 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 828 places, 698 transitions, 15035 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:03,991 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:06:03,991 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:06:03,991 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:06:05,522 INFO L129 PetriNetUnfolder]: 933/3203 cut-off events. [2022-01-19 07:06:05,522 INFO L130 PetriNetUnfolder]: For 89243/89263 co-relation queries the response was YES. [2022-01-19 07:06:05,612 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23185 conditions, 3203 events. 933/3203 cut-off events. For 89243/89263 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 25788 event pairs, 416 based on Foata normal form. 3/3095 useless extension candidates. Maximal degree in co-relation 22876. Up to 987 conditions per place. [2022-01-19 07:06:05,624 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 399 selfloop transitions, 172 changer transitions 59/771 dead transitions. [2022-01-19 07:06:05,624 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 842 places, 771 transitions, 18079 flow [2022-01-19 07:06:05,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:06:05,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:06:05,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4811 transitions. [2022-01-19 07:06:05,627 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7636507936507937 [2022-01-19 07:06:05,627 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4811 transitions. [2022-01-19 07:06:05,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4811 transitions. [2022-01-19 07:06:05,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:06:05,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4811 transitions. [2022-01-19 07:06:05,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.36666666666667) internal successors, (4811), 30 states have internal predecessors, (4811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:05,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:05,633 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:05,633 INFO L186 Difference]: Start difference. First operand has 828 places, 698 transitions, 15035 flow. Second operand 30 states and 4811 transitions. [2022-01-19 07:06:05,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 842 places, 771 transitions, 18079 flow [2022-01-19 07:06:06,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 828 places, 771 transitions, 17719 flow, removed 71 selfloop flow, removed 14 redundant places. [2022-01-19 07:06:06,439 INFO L242 Difference]: Finished difference. Result has 840 places, 686 transitions, 14740 flow [2022-01-19 07:06:06,439 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14710, PETRI_DIFFERENCE_MINUEND_PLACES=799, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=14740, PETRI_PLACES=840, PETRI_TRANSITIONS=686} [2022-01-19 07:06:06,439 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 653 predicate places. [2022-01-19 07:06:06,439 INFO L470 AbstractCegarLoop]: Abstraction has has 840 places, 686 transitions, 14740 flow [2022-01-19 07:06:06,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:06,440 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:06:06,440 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:06:06,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2022-01-19 07:06:06,440 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:06:06,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:06:06,440 INFO L85 PathProgramCache]: Analyzing trace with hash -885874594, now seen corresponding path program 100 times [2022-01-19 07:06:06,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:06:06,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89907438] [2022-01-19 07:06:06,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:06:06,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:06:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:06:06,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:06:06,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:06:06,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89907438] [2022-01-19 07:06:06,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89907438] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:06:06,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:06:06,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:06:06,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861942443] [2022-01-19 07:06:06,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:06:06,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:06:06,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:06:06,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:06:06,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:06:06,540 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:06:06,541 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 840 places, 686 transitions, 14740 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:06,541 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:06:06,541 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:06:06,541 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:06:07,985 INFO L129 PetriNetUnfolder]: 917/3238 cut-off events. [2022-01-19 07:06:07,986 INFO L130 PetriNetUnfolder]: For 89073/89079 co-relation queries the response was YES. [2022-01-19 07:06:08,070 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22714 conditions, 3238 events. 917/3238 cut-off events. For 89073/89079 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 26146 event pairs, 456 based on Foata normal form. 1/3130 useless extension candidates. Maximal degree in co-relation 22403. Up to 977 conditions per place. [2022-01-19 07:06:08,081 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 382 selfloop transitions, 160 changer transitions 62/745 dead transitions. [2022-01-19 07:06:08,081 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 840 places, 745 transitions, 17242 flow [2022-01-19 07:06:08,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 07:06:08,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 07:06:08,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4496 transitions. [2022-01-19 07:06:08,083 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646258503401361 [2022-01-19 07:06:08,083 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4496 transitions. [2022-01-19 07:06:08,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4496 transitions. [2022-01-19 07:06:08,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:06:08,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4496 transitions. [2022-01-19 07:06:08,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.57142857142858) internal successors, (4496), 28 states have internal predecessors, (4496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:08,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:08,089 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:08,089 INFO L186 Difference]: Start difference. First operand has 840 places, 686 transitions, 14740 flow. Second operand 28 states and 4496 transitions. [2022-01-19 07:06:08,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 840 places, 745 transitions, 17242 flow [2022-01-19 07:06:08,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 812 places, 745 transitions, 16707 flow, removed 32 selfloop flow, removed 28 redundant places. [2022-01-19 07:06:08,769 INFO L242 Difference]: Finished difference. Result has 821 places, 661 transitions, 13861 flow [2022-01-19 07:06:08,770 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14257, PETRI_DIFFERENCE_MINUEND_PLACES=785, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=686, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=13861, PETRI_PLACES=821, PETRI_TRANSITIONS=661} [2022-01-19 07:06:08,770 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 634 predicate places. [2022-01-19 07:06:08,770 INFO L470 AbstractCegarLoop]: Abstraction has has 821 places, 661 transitions, 13861 flow [2022-01-19 07:06:08,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:08,770 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:06:08,770 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:06:08,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2022-01-19 07:06:08,770 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:06:08,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:06:08,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1036209490, now seen corresponding path program 101 times [2022-01-19 07:06:08,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:06:08,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115315023] [2022-01-19 07:06:08,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:06:08,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:06:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:06:08,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:06:08,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:06:08,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115315023] [2022-01-19 07:06:08,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115315023] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:06:08,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:06:08,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:06:08,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445643939] [2022-01-19 07:06:08,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:06:08,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:06:08,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:06:08,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:06:08,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:06:08,872 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:06:08,873 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 821 places, 661 transitions, 13861 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:08,873 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:06:08,873 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:06:08,873 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:06:10,400 INFO L129 PetriNetUnfolder]: 912/3134 cut-off events. [2022-01-19 07:06:10,400 INFO L130 PetriNetUnfolder]: For 84221/84241 co-relation queries the response was YES. [2022-01-19 07:06:10,454 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22316 conditions, 3134 events. 912/3134 cut-off events. For 84221/84241 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 25034 event pairs, 424 based on Foata normal form. 3/3030 useless extension candidates. Maximal degree in co-relation 22013. Up to 971 conditions per place. [2022-01-19 07:06:10,464 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 385 selfloop transitions, 158 changer transitions 59/743 dead transitions. [2022-01-19 07:06:10,464 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 817 places, 743 transitions, 17049 flow [2022-01-19 07:06:10,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:06:10,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:06:10,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4822 transitions. [2022-01-19 07:06:10,466 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7653968253968254 [2022-01-19 07:06:10,466 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4822 transitions. [2022-01-19 07:06:10,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4822 transitions. [2022-01-19 07:06:10,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:06:10,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4822 transitions. [2022-01-19 07:06:10,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.73333333333332) internal successors, (4822), 30 states have internal predecessors, (4822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:10,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:10,472 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:10,472 INFO L186 Difference]: Start difference. First operand has 821 places, 661 transitions, 13861 flow. Second operand 30 states and 4822 transitions. [2022-01-19 07:06:10,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 817 places, 743 transitions, 17049 flow [2022-01-19 07:06:11,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 785 places, 743 transitions, 16241 flow, removed 35 selfloop flow, removed 32 redundant places. [2022-01-19 07:06:11,042 INFO L242 Difference]: Finished difference. Result has 796 places, 663 transitions, 13586 flow [2022-01-19 07:06:11,042 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13180, PETRI_DIFFERENCE_MINUEND_PLACES=756, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=13586, PETRI_PLACES=796, PETRI_TRANSITIONS=663} [2022-01-19 07:06:11,042 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 609 predicate places. [2022-01-19 07:06:11,042 INFO L470 AbstractCegarLoop]: Abstraction has has 796 places, 663 transitions, 13586 flow [2022-01-19 07:06:11,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:11,043 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:06:11,043 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:06:11,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2022-01-19 07:06:11,043 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:06:11,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:06:11,043 INFO L85 PathProgramCache]: Analyzing trace with hash -207531584, now seen corresponding path program 102 times [2022-01-19 07:06:11,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:06:11,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397872348] [2022-01-19 07:06:11,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:06:11,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:06:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:06:11,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:06:11,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:06:11,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397872348] [2022-01-19 07:06:11,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397872348] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:06:11,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:06:11,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:06:11,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868310953] [2022-01-19 07:06:11,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:06:11,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:06:11,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:06:11,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:06:11,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:06:11,151 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:06:11,151 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 796 places, 663 transitions, 13586 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:11,151 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:06:11,151 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:06:11,152 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:06:12,566 INFO L129 PetriNetUnfolder]: 902/3188 cut-off events. [2022-01-19 07:06:12,566 INFO L130 PetriNetUnfolder]: For 78832/78838 co-relation queries the response was YES. [2022-01-19 07:06:12,632 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21861 conditions, 3188 events. 902/3188 cut-off events. For 78832/78838 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 25626 event pairs, 459 based on Foata normal form. 1/3079 useless extension candidates. Maximal degree in co-relation 21567. Up to 969 conditions per place. [2022-01-19 07:06:12,643 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 374 selfloop transitions, 157 changer transitions 57/729 dead transitions. [2022-01-19 07:06:12,644 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 810 places, 729 transitions, 16336 flow [2022-01-19 07:06:12,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:06:12,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:06:12,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4817 transitions. [2022-01-19 07:06:12,646 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646031746031746 [2022-01-19 07:06:12,646 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4817 transitions. [2022-01-19 07:06:12,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4817 transitions. [2022-01-19 07:06:12,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:06:12,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4817 transitions. [2022-01-19 07:06:12,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.56666666666666) internal successors, (4817), 30 states have internal predecessors, (4817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:12,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:12,652 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:12,652 INFO L186 Difference]: Start difference. First operand has 796 places, 663 transitions, 13586 flow. Second operand 30 states and 4817 transitions. [2022-01-19 07:06:12,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 810 places, 729 transitions, 16336 flow [2022-01-19 07:06:13,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 797 places, 729 transitions, 16002 flow, removed 58 selfloop flow, removed 13 redundant places. [2022-01-19 07:06:13,220 INFO L242 Difference]: Finished difference. Result has 809 places, 651 transitions, 13308 flow [2022-01-19 07:06:13,220 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13281, PETRI_DIFFERENCE_MINUEND_PLACES=768, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=663, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=13308, PETRI_PLACES=809, PETRI_TRANSITIONS=651} [2022-01-19 07:06:13,220 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 622 predicate places. [2022-01-19 07:06:13,220 INFO L470 AbstractCegarLoop]: Abstraction has has 809 places, 651 transitions, 13308 flow [2022-01-19 07:06:13,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:13,221 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:06:13,221 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:06:13,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2022-01-19 07:06:13,221 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:06:13,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:06:13,221 INFO L85 PathProgramCache]: Analyzing trace with hash 81257722, now seen corresponding path program 103 times [2022-01-19 07:06:13,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:06:13,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574356370] [2022-01-19 07:06:13,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:06:13,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:06:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:06:13,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:06:13,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:06:13,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574356370] [2022-01-19 07:06:13,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574356370] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:06:13,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:06:13,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:06:13,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352532997] [2022-01-19 07:06:13,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:06:13,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:06:13,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:06:13,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:06:13,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:06:13,319 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:06:13,320 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 809 places, 651 transitions, 13308 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:13,320 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:06:13,320 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:06:13,320 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:06:14,740 INFO L129 PetriNetUnfolder]: 878/3028 cut-off events. [2022-01-19 07:06:14,741 INFO L130 PetriNetUnfolder]: For 77835/77855 co-relation queries the response was YES. [2022-01-19 07:06:14,796 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21025 conditions, 3028 events. 878/3028 cut-off events. For 77835/77855 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 23968 event pairs, 404 based on Foata normal form. 3/2925 useless extension candidates. Maximal degree in co-relation 20728. Up to 965 conditions per place. [2022-01-19 07:06:14,805 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 364 selfloop transitions, 146 changer transitions 60/711 dead transitions. [2022-01-19 07:06:14,805 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 811 places, 711 transitions, 15814 flow [2022-01-19 07:06:14,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:06:14,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:06:14,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4808 transitions. [2022-01-19 07:06:14,808 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7631746031746032 [2022-01-19 07:06:14,808 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4808 transitions. [2022-01-19 07:06:14,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4808 transitions. [2022-01-19 07:06:14,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:06:14,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4808 transitions. [2022-01-19 07:06:14,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.26666666666668) internal successors, (4808), 30 states have internal predecessors, (4808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:14,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:14,814 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:14,814 INFO L186 Difference]: Start difference. First operand has 809 places, 651 transitions, 13308 flow. Second operand 30 states and 4808 transitions. [2022-01-19 07:06:14,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 811 places, 711 transitions, 15814 flow [2022-01-19 07:06:15,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 781 places, 711 transitions, 15202 flow, removed 38 selfloop flow, removed 30 redundant places. [2022-01-19 07:06:15,366 INFO L242 Difference]: Finished difference. Result has 792 places, 625 transitions, 12375 flow [2022-01-19 07:06:15,366 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12761, PETRI_DIFFERENCE_MINUEND_PLACES=752, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=12375, PETRI_PLACES=792, PETRI_TRANSITIONS=625} [2022-01-19 07:06:15,366 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 605 predicate places. [2022-01-19 07:06:15,367 INFO L470 AbstractCegarLoop]: Abstraction has has 792 places, 625 transitions, 12375 flow [2022-01-19 07:06:15,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:15,367 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:06:15,367 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:06:15,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2022-01-19 07:06:15,367 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:06:15,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:06:15,367 INFO L85 PathProgramCache]: Analyzing trace with hash -340669678, now seen corresponding path program 104 times [2022-01-19 07:06:15,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:06:15,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911929862] [2022-01-19 07:06:15,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:06:15,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:06:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:06:15,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:06:15,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:06:15,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911929862] [2022-01-19 07:06:15,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911929862] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:06:15,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:06:15,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:06:15,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021203891] [2022-01-19 07:06:15,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:06:15,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:06:15,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:06:15,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:06:15,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:06:15,480 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:06:15,481 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 792 places, 625 transitions, 12375 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:15,481 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:06:15,481 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:06:15,481 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:06:16,928 INFO L129 PetriNetUnfolder]: 873/3013 cut-off events. [2022-01-19 07:06:16,929 INFO L130 PetriNetUnfolder]: For 73017/73037 co-relation queries the response was YES. [2022-01-19 07:06:16,991 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20713 conditions, 3013 events. 873/3013 cut-off events. For 73017/73037 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 23813 event pairs, 420 based on Foata normal form. 3/2909 useless extension candidates. Maximal degree in co-relation 20422. Up to 961 conditions per place. [2022-01-19 07:06:17,001 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 357 selfloop transitions, 133 changer transitions 58/689 dead transitions. [2022-01-19 07:06:17,002 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 786 places, 689 transitions, 14920 flow [2022-01-19 07:06:17,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:06:17,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:06:17,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4813 transitions. [2022-01-19 07:06:17,004 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763968253968254 [2022-01-19 07:06:17,004 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4813 transitions. [2022-01-19 07:06:17,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4813 transitions. [2022-01-19 07:06:17,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:06:17,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4813 transitions. [2022-01-19 07:06:17,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:17,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:17,010 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:17,010 INFO L186 Difference]: Start difference. First operand has 792 places, 625 transitions, 12375 flow. Second operand 30 states and 4813 transitions. [2022-01-19 07:06:17,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 786 places, 689 transitions, 14920 flow [2022-01-19 07:06:17,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 755 places, 689 transitions, 14275 flow, removed 36 selfloop flow, removed 31 redundant places. [2022-01-19 07:06:17,536 INFO L242 Difference]: Finished difference. Result has 767 places, 612 transitions, 11786 flow [2022-01-19 07:06:17,536 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11822, PETRI_DIFFERENCE_MINUEND_PLACES=726, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=11786, PETRI_PLACES=767, PETRI_TRANSITIONS=612} [2022-01-19 07:06:17,536 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 580 predicate places. [2022-01-19 07:06:17,536 INFO L470 AbstractCegarLoop]: Abstraction has has 767 places, 612 transitions, 11786 flow [2022-01-19 07:06:17,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:17,537 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:06:17,537 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:06:17,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2022-01-19 07:06:17,537 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:06:17,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:06:17,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1466982394, now seen corresponding path program 105 times [2022-01-19 07:06:17,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:06:17,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900666670] [2022-01-19 07:06:17,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:06:17,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:06:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:06:17,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:06:17,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:06:17,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900666670] [2022-01-19 07:06:17,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900666670] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:06:17,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:06:17,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:06:17,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133798310] [2022-01-19 07:06:17,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:06:17,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:06:17,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:06:17,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:06:17,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:06:17,647 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:06:17,648 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 767 places, 612 transitions, 11786 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:17,648 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:06:17,648 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:06:17,648 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:06:19,073 INFO L129 PetriNetUnfolder]: 860/3086 cut-off events. [2022-01-19 07:06:19,073 INFO L130 PetriNetUnfolder]: For 69378/69384 co-relation queries the response was YES. [2022-01-19 07:06:19,130 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20215 conditions, 3086 events. 860/3086 cut-off events. For 69378/69384 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 24760 event pairs, 440 based on Foata normal form. 1/2983 useless extension candidates. Maximal degree in co-relation 19931. Up to 943 conditions per place. [2022-01-19 07:06:19,139 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 343 selfloop transitions, 141 changer transitions 73/698 dead transitions. [2022-01-19 07:06:19,139 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 774 places, 698 transitions, 14824 flow [2022-01-19 07:06:19,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 07:06:19,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 07:06:19,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5600 transitions. [2022-01-19 07:06:19,142 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2022-01-19 07:06:19,142 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5600 transitions. [2022-01-19 07:06:19,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5600 transitions. [2022-01-19 07:06:19,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:06:19,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5600 transitions. [2022-01-19 07:06:19,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 160.0) internal successors, (5600), 35 states have internal predecessors, (5600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:19,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:19,149 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:19,149 INFO L186 Difference]: Start difference. First operand has 767 places, 612 transitions, 11786 flow. Second operand 35 states and 5600 transitions. [2022-01-19 07:06:19,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 774 places, 698 transitions, 14824 flow [2022-01-19 07:06:19,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 743 places, 698 transitions, 14334 flow, removed 33 selfloop flow, removed 31 redundant places. [2022-01-19 07:06:19,616 INFO L242 Difference]: Finished difference. Result has 756 places, 599 transitions, 11299 flow [2022-01-19 07:06:19,616 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11364, PETRI_DIFFERENCE_MINUEND_PLACES=709, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=11299, PETRI_PLACES=756, PETRI_TRANSITIONS=599} [2022-01-19 07:06:19,616 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 569 predicate places. [2022-01-19 07:06:19,617 INFO L470 AbstractCegarLoop]: Abstraction has has 756 places, 599 transitions, 11299 flow [2022-01-19 07:06:19,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:19,617 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:06:19,617 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:06:19,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2022-01-19 07:06:19,617 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:06:19,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:06:19,617 INFO L85 PathProgramCache]: Analyzing trace with hash -646566524, now seen corresponding path program 106 times [2022-01-19 07:06:19,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:06:19,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4887239] [2022-01-19 07:06:19,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:06:19,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:06:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:06:19,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:06:19,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:06:19,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4887239] [2022-01-19 07:06:19,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4887239] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:06:19,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:06:19,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:06:19,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810944374] [2022-01-19 07:06:19,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:06:19,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:06:19,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:06:19,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:06:19,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:06:19,717 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:06:19,718 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 756 places, 599 transitions, 11299 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:19,718 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:06:19,718 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:06:19,718 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:06:21,045 INFO L129 PetriNetUnfolder]: 827/2965 cut-off events. [2022-01-19 07:06:21,045 INFO L130 PetriNetUnfolder]: For 63634/63640 co-relation queries the response was YES. [2022-01-19 07:06:21,103 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19154 conditions, 2965 events. 827/2965 cut-off events. For 63634/63640 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 23320 event pairs, 439 based on Foata normal form. 1/2861 useless extension candidates. Maximal degree in co-relation 18877. Up to 941 conditions per place. [2022-01-19 07:06:21,113 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 328 selfloop transitions, 114 changer transitions 61/644 dead transitions. [2022-01-19 07:06:21,113 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 763 places, 644 transitions, 13195 flow [2022-01-19 07:06:21,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:06:21,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:06:21,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4638 transitions. [2022-01-19 07:06:21,115 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.761576354679803 [2022-01-19 07:06:21,116 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4638 transitions. [2022-01-19 07:06:21,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4638 transitions. [2022-01-19 07:06:21,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:06:21,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4638 transitions. [2022-01-19 07:06:21,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 159.93103448275863) internal successors, (4638), 29 states have internal predecessors, (4638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:21,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:21,121 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:21,122 INFO L186 Difference]: Start difference. First operand has 756 places, 599 transitions, 11299 flow. Second operand 29 states and 4638 transitions. [2022-01-19 07:06:21,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 763 places, 644 transitions, 13195 flow [2022-01-19 07:06:21,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 734 places, 644 transitions, 12803 flow, removed 58 selfloop flow, removed 29 redundant places. [2022-01-19 07:06:21,583 INFO L242 Difference]: Finished difference. Result has 743 places, 558 transitions, 10135 flow [2022-01-19 07:06:21,584 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10945, PETRI_DIFFERENCE_MINUEND_PLACES=706, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=10135, PETRI_PLACES=743, PETRI_TRANSITIONS=558} [2022-01-19 07:06:21,584 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 556 predicate places. [2022-01-19 07:06:21,584 INFO L470 AbstractCegarLoop]: Abstraction has has 743 places, 558 transitions, 10135 flow [2022-01-19 07:06:21,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:21,584 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:06:21,585 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:06:21,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2022-01-19 07:06:21,585 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:06:21,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:06:21,585 INFO L85 PathProgramCache]: Analyzing trace with hash -915891424, now seen corresponding path program 107 times [2022-01-19 07:06:21,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:06:21,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411617460] [2022-01-19 07:06:21,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:06:21,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:06:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:06:21,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:06:21,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:06:21,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411617460] [2022-01-19 07:06:21,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411617460] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:06:21,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:06:21,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:06:21,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171275275] [2022-01-19 07:06:21,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:06:21,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:06:21,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:06:21,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:06:21,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:06:21,691 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:06:21,692 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 743 places, 558 transitions, 10135 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:21,692 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:06:21,692 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:06:21,692 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:06:23,110 INFO L129 PetriNetUnfolder]: 838/2912 cut-off events. [2022-01-19 07:06:23,111 INFO L130 PetriNetUnfolder]: For 65834/65854 co-relation queries the response was YES. [2022-01-19 07:06:23,159 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19258 conditions, 2912 events. 838/2912 cut-off events. For 65834/65854 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 22763 event pairs, 403 based on Foata normal form. 3/2815 useless extension candidates. Maximal degree in co-relation 18993. Up to 939 conditions per place. [2022-01-19 07:06:23,167 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 316 selfloop transitions, 138 changer transitions 70/665 dead transitions. [2022-01-19 07:06:23,167 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 729 places, 665 transitions, 13797 flow [2022-01-19 07:06:23,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:06:23,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:06:23,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6081 transitions. [2022-01-19 07:06:23,170 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.76203007518797 [2022-01-19 07:06:23,170 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6081 transitions. [2022-01-19 07:06:23,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6081 transitions. [2022-01-19 07:06:23,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:06:23,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6081 transitions. [2022-01-19 07:06:23,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.02631578947367) internal successors, (6081), 38 states have internal predecessors, (6081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:23,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:23,177 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:23,178 INFO L186 Difference]: Start difference. First operand has 743 places, 558 transitions, 10135 flow. Second operand 38 states and 6081 transitions. [2022-01-19 07:06:23,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 729 places, 665 transitions, 13797 flow [2022-01-19 07:06:23,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 695 places, 665 transitions, 12925 flow, removed 45 selfloop flow, removed 34 redundant places. [2022-01-19 07:06:23,580 INFO L242 Difference]: Finished difference. Result has 718 places, 566 transitions, 10062 flow [2022-01-19 07:06:23,580 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9445, PETRI_DIFFERENCE_MINUEND_PLACES=658, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=10062, PETRI_PLACES=718, PETRI_TRANSITIONS=566} [2022-01-19 07:06:23,580 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 531 predicate places. [2022-01-19 07:06:23,580 INFO L470 AbstractCegarLoop]: Abstraction has has 718 places, 566 transitions, 10062 flow [2022-01-19 07:06:23,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:23,580 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:06:23,580 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:06:23,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2022-01-19 07:06:23,581 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:06:23,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:06:23,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1163121618, now seen corresponding path program 108 times [2022-01-19 07:06:23,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:06:23,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812017364] [2022-01-19 07:06:23,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:06:23,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:06:23,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:06:23,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:06:23,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:06:23,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812017364] [2022-01-19 07:06:23,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812017364] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:06:23,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:06:23,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:06:23,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154571641] [2022-01-19 07:06:23,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:06:23,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:06:23,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:06:23,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:06:23,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:06:23,686 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:06:23,687 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 718 places, 566 transitions, 10062 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:23,687 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:06:23,687 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:06:23,687 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:06:24,899 INFO L129 PetriNetUnfolder]: 807/2820 cut-off events. [2022-01-19 07:06:24,899 INFO L130 PetriNetUnfolder]: For 58009/58029 co-relation queries the response was YES. [2022-01-19 07:06:24,952 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18039 conditions, 2820 events. 807/2820 cut-off events. For 58009/58029 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 21834 event pairs, 413 based on Foata normal form. 3/2721 useless extension candidates. Maximal degree in co-relation 17773. Up to 937 conditions per place. [2022-01-19 07:06:24,961 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 321 selfloop transitions, 85 changer transitions 60/607 dead transitions. [2022-01-19 07:06:24,961 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 722 places, 607 transitions, 11717 flow [2022-01-19 07:06:24,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:06:24,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:06:24,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4646 transitions. [2022-01-19 07:06:24,963 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7628899835796388 [2022-01-19 07:06:24,963 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4646 transitions. [2022-01-19 07:06:24,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4646 transitions. [2022-01-19 07:06:24,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:06:24,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4646 transitions. [2022-01-19 07:06:24,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.20689655172413) internal successors, (4646), 29 states have internal predecessors, (4646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:24,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:24,969 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:24,969 INFO L186 Difference]: Start difference. First operand has 718 places, 566 transitions, 10062 flow. Second operand 29 states and 4646 transitions. [2022-01-19 07:06:24,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 722 places, 607 transitions, 11717 flow [2022-01-19 07:06:25,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 700 places, 607 transitions, 11462 flow, removed 57 selfloop flow, removed 22 redundant places. [2022-01-19 07:06:25,346 INFO L242 Difference]: Finished difference. Result has 707 places, 528 transitions, 9109 flow [2022-01-19 07:06:25,346 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9826, PETRI_DIFFERENCE_MINUEND_PLACES=672, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=9109, PETRI_PLACES=707, PETRI_TRANSITIONS=528} [2022-01-19 07:06:25,346 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 520 predicate places. [2022-01-19 07:06:25,346 INFO L470 AbstractCegarLoop]: Abstraction has has 707 places, 528 transitions, 9109 flow [2022-01-19 07:06:25,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:25,347 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:06:25,347 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:06:25,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2022-01-19 07:06:25,347 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:06:25,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:06:25,347 INFO L85 PathProgramCache]: Analyzing trace with hash 740238738, now seen corresponding path program 109 times [2022-01-19 07:06:25,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:06:25,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820976429] [2022-01-19 07:06:25,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:06:25,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:06:25,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:06:25,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:06:25,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:06:25,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820976429] [2022-01-19 07:06:25,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820976429] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:06:25,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:06:25,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:06:25,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154484584] [2022-01-19 07:06:25,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:06:25,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:06:25,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:06:25,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:06:25,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:06:25,450 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:06:25,451 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 707 places, 528 transitions, 9109 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:25,451 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:06:25,451 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:06:25,451 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:06:26,716 INFO L129 PetriNetUnfolder]: 807/2845 cut-off events. [2022-01-19 07:06:26,717 INFO L130 PetriNetUnfolder]: For 58503/58523 co-relation queries the response was YES. [2022-01-19 07:06:26,777 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18018 conditions, 2845 events. 807/2845 cut-off events. For 58503/58523 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 22136 event pairs, 410 based on Foata normal form. 3/2747 useless extension candidates. Maximal degree in co-relation 17763. Up to 935 conditions per place. [2022-01-19 07:06:26,786 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 279 selfloop transitions, 129 changer transitions 70/619 dead transitions. [2022-01-19 07:06:26,787 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 699 places, 619 transitions, 12177 flow [2022-01-19 07:06:26,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 07:06:26,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 07:06:26,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5927 transitions. [2022-01-19 07:06:26,789 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7628056628056628 [2022-01-19 07:06:26,789 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5927 transitions. [2022-01-19 07:06:26,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5927 transitions. [2022-01-19 07:06:26,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:06:26,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5927 transitions. [2022-01-19 07:06:26,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.1891891891892) internal successors, (5927), 37 states have internal predecessors, (5927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:26,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:26,797 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:26,797 INFO L186 Difference]: Start difference. First operand has 707 places, 528 transitions, 9109 flow. Second operand 37 states and 5927 transitions. [2022-01-19 07:06:26,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 699 places, 619 transitions, 12177 flow [2022-01-19 07:06:27,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 668 places, 619 transitions, 11688 flow, removed 32 selfloop flow, removed 31 redundant places. [2022-01-19 07:06:27,143 INFO L242 Difference]: Finished difference. Result has 686 places, 528 transitions, 9050 flow [2022-01-19 07:06:27,144 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8713, PETRI_DIFFERENCE_MINUEND_PLACES=632, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=9050, PETRI_PLACES=686, PETRI_TRANSITIONS=528} [2022-01-19 07:06:27,144 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 499 predicate places. [2022-01-19 07:06:27,144 INFO L470 AbstractCegarLoop]: Abstraction has has 686 places, 528 transitions, 9050 flow [2022-01-19 07:06:27,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:27,145 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:06:27,145 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:06:27,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2022-01-19 07:06:27,145 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:06:27,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:06:27,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1682277394, now seen corresponding path program 110 times [2022-01-19 07:06:27,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:06:27,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223288099] [2022-01-19 07:06:27,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:06:27,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:06:27,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:06:27,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:06:27,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:06:27,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223288099] [2022-01-19 07:06:27,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223288099] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:06:27,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:06:27,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:06:27,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661587422] [2022-01-19 07:06:27,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:06:27,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:06:27,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:06:27,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:06:27,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:06:27,249 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:06:27,250 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 686 places, 528 transitions, 9050 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:27,250 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:06:27,250 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:06:27,250 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:06:28,448 INFO L129 PetriNetUnfolder]: 807/2840 cut-off events. [2022-01-19 07:06:28,448 INFO L130 PetriNetUnfolder]: For 58296/58316 co-relation queries the response was YES. [2022-01-19 07:06:28,501 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18067 conditions, 2840 events. 807/2840 cut-off events. For 58296/58316 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 22086 event pairs, 406 based on Foata normal form. 3/2742 useless extension candidates. Maximal degree in co-relation 17810. Up to 945 conditions per place. [2022-01-19 07:06:28,511 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 286 selfloop transitions, 145 changer transitions 56/628 dead transitions. [2022-01-19 07:06:28,512 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 692 places, 628 transitions, 12432 flow [2022-01-19 07:06:28,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:06:28,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:06:28,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4823 transitions. [2022-01-19 07:06:28,514 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655555555555555 [2022-01-19 07:06:28,514 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4823 transitions. [2022-01-19 07:06:28,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4823 transitions. [2022-01-19 07:06:28,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:06:28,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4823 transitions. [2022-01-19 07:06:28,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.76666666666668) internal successors, (4823), 30 states have internal predecessors, (4823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:28,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:28,520 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:28,520 INFO L186 Difference]: Start difference. First operand has 686 places, 528 transitions, 9050 flow. Second operand 30 states and 4823 transitions. [2022-01-19 07:06:28,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 692 places, 628 transitions, 12432 flow [2022-01-19 07:06:28,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 628 transitions, 12062 flow, removed 79 selfloop flow, removed 26 redundant places. [2022-01-19 07:06:28,902 INFO L242 Difference]: Finished difference. Result has 681 places, 546 transitions, 9710 flow [2022-01-19 07:06:28,902 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8742, PETRI_DIFFERENCE_MINUEND_PLACES=637, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=9710, PETRI_PLACES=681, PETRI_TRANSITIONS=546} [2022-01-19 07:06:28,902 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 494 predicate places. [2022-01-19 07:06:28,902 INFO L470 AbstractCegarLoop]: Abstraction has has 681 places, 546 transitions, 9710 flow [2022-01-19 07:06:28,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:28,903 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:06:28,903 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:06:28,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2022-01-19 07:06:28,903 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:06:28,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:06:28,903 INFO L85 PathProgramCache]: Analyzing trace with hash -361675340, now seen corresponding path program 111 times [2022-01-19 07:06:28,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:06:28,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612640360] [2022-01-19 07:06:28,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:06:28,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:06:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:06:29,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:06:29,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:06:29,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612640360] [2022-01-19 07:06:29,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612640360] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:06:29,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:06:29,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:06:29,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007984987] [2022-01-19 07:06:29,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:06:29,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:06:29,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:06:29,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:06:29,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:06:29,010 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:06:29,010 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 681 places, 546 transitions, 9710 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:29,010 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:06:29,010 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:06:29,010 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:06:30,178 INFO L129 PetriNetUnfolder]: 788/2773 cut-off events. [2022-01-19 07:06:30,178 INFO L130 PetriNetUnfolder]: For 55093/55113 co-relation queries the response was YES. [2022-01-19 07:06:30,228 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17482 conditions, 2773 events. 788/2773 cut-off events. For 55093/55113 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 21351 event pairs, 404 based on Foata normal form. 3/2674 useless extension candidates. Maximal degree in co-relation 17232. Up to 937 conditions per place. [2022-01-19 07:06:30,237 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 283 selfloop transitions, 114 changer transitions 59/597 dead transitions. [2022-01-19 07:06:30,238 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 597 transitions, 11588 flow [2022-01-19 07:06:30,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:06:30,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:06:30,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4658 transitions. [2022-01-19 07:06:30,240 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7648604269293925 [2022-01-19 07:06:30,240 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4658 transitions. [2022-01-19 07:06:30,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4658 transitions. [2022-01-19 07:06:30,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:06:30,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4658 transitions. [2022-01-19 07:06:30,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.6206896551724) internal successors, (4658), 29 states have internal predecessors, (4658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:30,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:30,246 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:30,246 INFO L186 Difference]: Start difference. First operand has 681 places, 546 transitions, 9710 flow. Second operand 29 states and 4658 transitions. [2022-01-19 07:06:30,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 597 transitions, 11588 flow [2022-01-19 07:06:30,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 684 places, 597 transitions, 11260 flow, removed 124 selfloop flow, removed 10 redundant places. [2022-01-19 07:06:30,596 INFO L242 Difference]: Finished difference. Result has 694 places, 521 transitions, 8968 flow [2022-01-19 07:06:30,597 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9405, PETRI_DIFFERENCE_MINUEND_PLACES=656, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=8968, PETRI_PLACES=694, PETRI_TRANSITIONS=521} [2022-01-19 07:06:30,597 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 507 predicate places. [2022-01-19 07:06:30,597 INFO L470 AbstractCegarLoop]: Abstraction has has 694 places, 521 transitions, 8968 flow [2022-01-19 07:06:30,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:30,597 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:06:30,597 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:06:30,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2022-01-19 07:06:30,597 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:06:30,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:06:30,598 INFO L85 PathProgramCache]: Analyzing trace with hash 281739238, now seen corresponding path program 112 times [2022-01-19 07:06:30,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:06:30,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445793160] [2022-01-19 07:06:30,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:06:30,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:06:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:06:30,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:06:30,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:06:30,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445793160] [2022-01-19 07:06:30,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445793160] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:06:30,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:06:30,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:06:30,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352979713] [2022-01-19 07:06:30,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:06:30,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:06:30,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:06:30,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:06:30,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:06:30,719 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:06:30,720 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 694 places, 521 transitions, 8968 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:30,720 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:06:30,720 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:06:30,720 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:06:31,926 INFO L129 PetriNetUnfolder]: 764/2686 cut-off events. [2022-01-19 07:06:31,926 INFO L130 PetriNetUnfolder]: For 50889/50909 co-relation queries the response was YES. [2022-01-19 07:06:31,965 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16561 conditions, 2686 events. 764/2686 cut-off events. For 50889/50909 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 20406 event pairs, 391 based on Foata normal form. 3/2590 useless extension candidates. Maximal degree in co-relation 16309. Up to 927 conditions per place. [2022-01-19 07:06:31,972 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 271 selfloop transitions, 98 changer transitions 61/571 dead transitions. [2022-01-19 07:06:31,973 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 687 places, 571 transitions, 10774 flow [2022-01-19 07:06:31,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 07:06:31,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 07:06:31,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4499 transitions. [2022-01-19 07:06:31,975 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7651360544217687 [2022-01-19 07:06:31,975 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4499 transitions. [2022-01-19 07:06:31,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4499 transitions. [2022-01-19 07:06:31,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:06:31,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4499 transitions. [2022-01-19 07:06:31,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.67857142857142) internal successors, (4499), 28 states have internal predecessors, (4499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:31,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:31,980 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:31,980 INFO L186 Difference]: Start difference. First operand has 694 places, 521 transitions, 8968 flow. Second operand 28 states and 4499 transitions. [2022-01-19 07:06:31,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 687 places, 571 transitions, 10774 flow [2022-01-19 07:06:32,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 653 places, 571 transitions, 10171 flow, removed 43 selfloop flow, removed 34 redundant places. [2022-01-19 07:06:32,271 INFO L242 Difference]: Finished difference. Result has 661 places, 486 transitions, 7732 flow [2022-01-19 07:06:32,271 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8425, PETRI_DIFFERENCE_MINUEND_PLACES=626, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=7732, PETRI_PLACES=661, PETRI_TRANSITIONS=486} [2022-01-19 07:06:32,271 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 474 predicate places. [2022-01-19 07:06:32,271 INFO L470 AbstractCegarLoop]: Abstraction has has 661 places, 486 transitions, 7732 flow [2022-01-19 07:06:32,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:32,271 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:06:32,272 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:06:32,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2022-01-19 07:06:32,272 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:06:32,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:06:32,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1668264364, now seen corresponding path program 113 times [2022-01-19 07:06:32,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:06:32,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904259527] [2022-01-19 07:06:32,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:06:32,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:06:32,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:06:32,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:06:32,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:06:32,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904259527] [2022-01-19 07:06:32,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904259527] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:06:32,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:06:32,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:06:32,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206518144] [2022-01-19 07:06:32,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:06:32,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:06:32,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:06:32,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:06:32,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:06:32,375 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:06:32,376 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 661 places, 486 transitions, 7732 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:32,376 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:06:32,376 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:06:32,376 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:06:33,592 INFO L129 PetriNetUnfolder]: 772/2706 cut-off events. [2022-01-19 07:06:33,592 INFO L130 PetriNetUnfolder]: For 48691/48711 co-relation queries the response was YES. [2022-01-19 07:06:33,640 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16456 conditions, 2706 events. 772/2706 cut-off events. For 48691/48711 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20575 event pairs, 389 based on Foata normal form. 3/2611 useless extension candidates. Maximal degree in co-relation 16216. Up to 929 conditions per place. [2022-01-19 07:06:33,650 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 261 selfloop transitions, 122 changer transitions 55/579 dead transitions. [2022-01-19 07:06:33,650 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 649 places, 579 transitions, 10733 flow [2022-01-19 07:06:33,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:06:33,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:06:33,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4667 transitions. [2022-01-19 07:06:33,653 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7663382594417077 [2022-01-19 07:06:33,653 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4667 transitions. [2022-01-19 07:06:33,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4667 transitions. [2022-01-19 07:06:33,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:06:33,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4667 transitions. [2022-01-19 07:06:33,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.93103448275863) internal successors, (4667), 29 states have internal predecessors, (4667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:33,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:33,659 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:33,659 INFO L186 Difference]: Start difference. First operand has 661 places, 486 transitions, 7732 flow. Second operand 29 states and 4667 transitions. [2022-01-19 07:06:33,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 649 places, 579 transitions, 10733 flow [2022-01-19 07:06:33,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 579 transitions, 9960 flow, removed 49 selfloop flow, removed 38 redundant places. [2022-01-19 07:06:33,954 INFO L242 Difference]: Finished difference. Result has 625 places, 498 transitions, 7804 flow [2022-01-19 07:06:33,954 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7189, PETRI_DIFFERENCE_MINUEND_PLACES=583, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7804, PETRI_PLACES=625, PETRI_TRANSITIONS=498} [2022-01-19 07:06:33,955 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 438 predicate places. [2022-01-19 07:06:33,955 INFO L470 AbstractCegarLoop]: Abstraction has has 625 places, 498 transitions, 7804 flow [2022-01-19 07:06:33,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:33,955 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:06:33,955 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:06:33,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2022-01-19 07:06:33,955 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:06:33,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:06:33,956 INFO L85 PathProgramCache]: Analyzing trace with hash -877186112, now seen corresponding path program 114 times [2022-01-19 07:06:33,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:06:33,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265732304] [2022-01-19 07:06:33,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:06:33,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:06:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:06:34,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:06:34,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:06:34,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265732304] [2022-01-19 07:06:34,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265732304] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:06:34,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:06:34,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:06:34,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034738913] [2022-01-19 07:06:34,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:06:34,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:06:34,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:06:34,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:06:34,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:06:34,069 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:06:34,070 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 625 places, 498 transitions, 7804 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:34,070 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:06:34,070 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:06:34,070 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:06:35,380 INFO L129 PetriNetUnfolder]: 773/2708 cut-off events. [2022-01-19 07:06:35,380 INFO L130 PetriNetUnfolder]: For 45058/45078 co-relation queries the response was YES. [2022-01-19 07:06:35,426 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16323 conditions, 2708 events. 773/2708 cut-off events. For 45058/45078 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 20677 event pairs, 389 based on Foata normal form. 3/2609 useless extension candidates. Maximal degree in co-relation 16091. Up to 931 conditions per place. [2022-01-19 07:06:35,435 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 266 selfloop transitions, 129 changer transitions 56/592 dead transitions. [2022-01-19 07:06:35,435 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 592 transitions, 10832 flow [2022-01-19 07:06:35,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:06:35,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:06:35,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4663 transitions. [2022-01-19 07:06:35,437 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7656814449917898 [2022-01-19 07:06:35,437 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4663 transitions. [2022-01-19 07:06:35,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4663 transitions. [2022-01-19 07:06:35,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:06:35,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4663 transitions. [2022-01-19 07:06:35,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.79310344827587) internal successors, (4663), 29 states have internal predecessors, (4663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:35,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:35,443 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:35,443 INFO L186 Difference]: Start difference. First operand has 625 places, 498 transitions, 7804 flow. Second operand 29 states and 4663 transitions. [2022-01-19 07:06:35,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 592 transitions, 10832 flow [2022-01-19 07:06:35,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 592 transitions, 10482 flow, removed 61 selfloop flow, removed 14 redundant places. [2022-01-19 07:06:35,720 INFO L242 Difference]: Finished difference. Result has 638 places, 513 transitions, 8296 flow [2022-01-19 07:06:35,720 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7534, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=8296, PETRI_PLACES=638, PETRI_TRANSITIONS=513} [2022-01-19 07:06:35,720 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 451 predicate places. [2022-01-19 07:06:35,720 INFO L470 AbstractCegarLoop]: Abstraction has has 638 places, 513 transitions, 8296 flow [2022-01-19 07:06:35,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:35,721 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:06:35,721 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:06:35,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2022-01-19 07:06:35,721 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:06:35,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:06:35,721 INFO L85 PathProgramCache]: Analyzing trace with hash -2076835798, now seen corresponding path program 115 times [2022-01-19 07:06:35,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:06:35,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026745946] [2022-01-19 07:06:35,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:06:35,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:06:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:06:35,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:06:35,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:06:35,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026745946] [2022-01-19 07:06:35,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026745946] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:06:35,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:06:35,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:06:35,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773874544] [2022-01-19 07:06:35,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:06:35,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:06:35,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:06:35,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:06:35,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:06:35,832 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:06:35,833 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 638 places, 513 transitions, 8296 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:35,833 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:06:35,833 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:06:35,833 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:06:36,922 INFO L129 PetriNetUnfolder]: 774/2808 cut-off events. [2022-01-19 07:06:36,923 INFO L130 PetriNetUnfolder]: For 46418/46424 co-relation queries the response was YES. [2022-01-19 07:06:36,978 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16484 conditions, 2808 events. 774/2808 cut-off events. For 46418/46424 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 21711 event pairs, 422 based on Foata normal form. 1/2707 useless extension candidates. Maximal degree in co-relation 16247. Up to 933 conditions per place. [2022-01-19 07:06:36,987 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 267 selfloop transitions, 142 changer transitions 59/609 dead transitions. [2022-01-19 07:06:36,987 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 651 places, 609 transitions, 11317 flow [2022-01-19 07:06:36,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 07:06:36,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 07:06:36,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4506 transitions. [2022-01-19 07:06:36,990 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7663265306122449 [2022-01-19 07:06:36,990 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4506 transitions. [2022-01-19 07:06:36,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4506 transitions. [2022-01-19 07:06:36,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:06:36,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4506 transitions. [2022-01-19 07:06:36,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.92857142857142) internal successors, (4506), 28 states have internal predecessors, (4506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:36,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:36,995 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:36,996 INFO L186 Difference]: Start difference. First operand has 638 places, 513 transitions, 8296 flow. Second operand 28 states and 4506 transitions. [2022-01-19 07:06:36,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 651 places, 609 transitions, 11317 flow [2022-01-19 07:06:37,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 639 places, 609 transitions, 10904 flow, removed 115 selfloop flow, removed 12 redundant places. [2022-01-19 07:06:37,268 INFO L242 Difference]: Finished difference. Result has 651 places, 521 transitions, 8514 flow [2022-01-19 07:06:37,268 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7973, PETRI_DIFFERENCE_MINUEND_PLACES=612, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=8514, PETRI_PLACES=651, PETRI_TRANSITIONS=521} [2022-01-19 07:06:37,269 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 464 predicate places. [2022-01-19 07:06:37,269 INFO L470 AbstractCegarLoop]: Abstraction has has 651 places, 521 transitions, 8514 flow [2022-01-19 07:06:37,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:37,269 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:06:37,269 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:06:37,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2022-01-19 07:06:37,269 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:06:37,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:06:37,269 INFO L85 PathProgramCache]: Analyzing trace with hash 163131482, now seen corresponding path program 116 times [2022-01-19 07:06:37,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:06:37,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221068406] [2022-01-19 07:06:37,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:06:37,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:06:37,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:06:37,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:06:37,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:06:37,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221068406] [2022-01-19 07:06:37,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221068406] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:06:37,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:06:37,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:06:37,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93695993] [2022-01-19 07:06:37,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:06:37,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:06:37,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:06:37,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:06:37,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:06:37,399 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:06:37,399 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 651 places, 521 transitions, 8514 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:37,399 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:06:37,400 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:06:37,400 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:06:38,738 INFO L129 PetriNetUnfolder]: 780/2746 cut-off events. [2022-01-19 07:06:38,738 INFO L130 PetriNetUnfolder]: For 46774/46794 co-relation queries the response was YES. [2022-01-19 07:06:38,785 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16576 conditions, 2746 events. 780/2746 cut-off events. For 46774/46794 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 21110 event pairs, 384 based on Foata normal form. 3/2651 useless extension candidates. Maximal degree in co-relation 16335. Up to 924 conditions per place. [2022-01-19 07:06:38,793 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 267 selfloop transitions, 152 changer transitions 80/640 dead transitions. [2022-01-19 07:06:38,793 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 683 places, 640 transitions, 12156 flow [2022-01-19 07:06:38,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 07:06:38,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 07:06:38,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7335 transitions. [2022-01-19 07:06:38,797 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7593167701863354 [2022-01-19 07:06:38,797 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7335 transitions. [2022-01-19 07:06:38,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7335 transitions. [2022-01-19 07:06:38,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:06:38,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7335 transitions. [2022-01-19 07:06:38,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.45652173913044) internal successors, (7335), 46 states have internal predecessors, (7335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:38,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:38,806 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:38,806 INFO L186 Difference]: Start difference. First operand has 651 places, 521 transitions, 8514 flow. Second operand 46 states and 7335 transitions. [2022-01-19 07:06:38,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 683 places, 640 transitions, 12156 flow [2022-01-19 07:06:39,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 668 places, 640 transitions, 11693 flow, removed 81 selfloop flow, removed 15 redundant places. [2022-01-19 07:06:39,099 INFO L242 Difference]: Finished difference. Result has 701 places, 529 transitions, 8796 flow [2022-01-19 07:06:39,099 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8161, PETRI_DIFFERENCE_MINUEND_PLACES=623, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=8796, PETRI_PLACES=701, PETRI_TRANSITIONS=529} [2022-01-19 07:06:39,099 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 514 predicate places. [2022-01-19 07:06:39,099 INFO L470 AbstractCegarLoop]: Abstraction has has 701 places, 529 transitions, 8796 flow [2022-01-19 07:06:39,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:39,100 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:06:39,100 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:06:39,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2022-01-19 07:06:39,100 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:06:39,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:06:39,100 INFO L85 PathProgramCache]: Analyzing trace with hash -70186094, now seen corresponding path program 117 times [2022-01-19 07:06:39,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:06:39,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443459833] [2022-01-19 07:06:39,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:06:39,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:06:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:06:39,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:06:39,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:06:39,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443459833] [2022-01-19 07:06:39,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443459833] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:06:39,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:06:39,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:06:39,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439118846] [2022-01-19 07:06:39,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:06:39,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:06:39,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:06:39,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:06:39,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:06:39,210 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:06:39,211 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 701 places, 529 transitions, 8796 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:39,211 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:06:39,211 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:06:39,211 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:06:40,488 INFO L129 PetriNetUnfolder]: 755/2758 cut-off events. [2022-01-19 07:06:40,489 INFO L130 PetriNetUnfolder]: For 45920/45926 co-relation queries the response was YES. [2022-01-19 07:06:40,527 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16174 conditions, 2758 events. 755/2758 cut-off events. For 45920/45926 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 21322 event pairs, 427 based on Foata normal form. 1/2656 useless extension candidates. Maximal degree in co-relation 15909. Up to 935 conditions per place. [2022-01-19 07:06:40,534 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 273 selfloop transitions, 118 changer transitions 58/590 dead transitions. [2022-01-19 07:06:40,534 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 697 places, 590 transitions, 10893 flow [2022-01-19 07:06:40,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:06:40,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:06:40,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4814 transitions. [2022-01-19 07:06:40,537 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7641269841269841 [2022-01-19 07:06:40,537 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4814 transitions. [2022-01-19 07:06:40,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4814 transitions. [2022-01-19 07:06:40,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:06:40,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4814 transitions. [2022-01-19 07:06:40,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.46666666666667) internal successors, (4814), 30 states have internal predecessors, (4814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:40,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:40,543 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:40,543 INFO L186 Difference]: Start difference. First operand has 701 places, 529 transitions, 8796 flow. Second operand 30 states and 4814 transitions. [2022-01-19 07:06:40,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 697 places, 590 transitions, 10893 flow [2022-01-19 07:06:40,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 590 transitions, 10623 flow, removed 77 selfloop flow, removed 31 redundant places. [2022-01-19 07:06:40,819 INFO L242 Difference]: Finished difference. Result has 677 places, 511 transitions, 8374 flow [2022-01-19 07:06:40,819 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8583, PETRI_DIFFERENCE_MINUEND_PLACES=637, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=8374, PETRI_PLACES=677, PETRI_TRANSITIONS=511} [2022-01-19 07:06:40,819 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 490 predicate places. [2022-01-19 07:06:40,819 INFO L470 AbstractCegarLoop]: Abstraction has has 677 places, 511 transitions, 8374 flow [2022-01-19 07:06:40,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:40,819 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:06:40,819 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:06:40,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2022-01-19 07:06:40,820 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:06:40,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:06:40,820 INFO L85 PathProgramCache]: Analyzing trace with hash -968457894, now seen corresponding path program 118 times [2022-01-19 07:06:40,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:06:40,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143891976] [2022-01-19 07:06:40,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:06:40,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:06:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:06:40,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:06:40,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:06:40,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143891976] [2022-01-19 07:06:40,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143891976] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:06:40,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:06:40,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:06:40,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797007519] [2022-01-19 07:06:40,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:06:40,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:06:40,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:06:40,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:06:40,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:06:40,927 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:06:40,927 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 677 places, 511 transitions, 8374 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:40,927 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:06:40,927 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:06:40,927 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:06:42,035 INFO L129 PetriNetUnfolder]: 734/2694 cut-off events. [2022-01-19 07:06:42,035 INFO L130 PetriNetUnfolder]: For 42314/42320 co-relation queries the response was YES. [2022-01-19 07:06:42,091 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15349 conditions, 2694 events. 734/2694 cut-off events. For 42314/42320 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20657 event pairs, 422 based on Foata normal form. 1/2594 useless extension candidates. Maximal degree in co-relation 15101. Up to 932 conditions per place. [2022-01-19 07:06:42,099 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 253 selfloop transitions, 115 changer transitions 60/569 dead transitions. [2022-01-19 07:06:42,099 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 679 places, 569 transitions, 10340 flow [2022-01-19 07:06:42,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:06:42,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:06:42,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4808 transitions. [2022-01-19 07:06:42,101 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7631746031746032 [2022-01-19 07:06:42,101 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4808 transitions. [2022-01-19 07:06:42,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4808 transitions. [2022-01-19 07:06:42,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:06:42,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4808 transitions. [2022-01-19 07:06:42,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.26666666666668) internal successors, (4808), 30 states have internal predecessors, (4808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:42,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:42,108 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:42,108 INFO L186 Difference]: Start difference. First operand has 677 places, 511 transitions, 8374 flow. Second operand 30 states and 4808 transitions. [2022-01-19 07:06:42,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 679 places, 569 transitions, 10340 flow [2022-01-19 07:06:42,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 649 places, 569 transitions, 9923 flow, removed 39 selfloop flow, removed 30 redundant places. [2022-01-19 07:06:42,384 INFO L242 Difference]: Finished difference. Result has 657 places, 483 transitions, 7566 flow [2022-01-19 07:06:42,385 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8020, PETRI_DIFFERENCE_MINUEND_PLACES=620, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7566, PETRI_PLACES=657, PETRI_TRANSITIONS=483} [2022-01-19 07:06:42,385 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 470 predicate places. [2022-01-19 07:06:42,385 INFO L470 AbstractCegarLoop]: Abstraction has has 657 places, 483 transitions, 7566 flow [2022-01-19 07:06:42,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:42,385 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:06:42,385 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:06:42,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2022-01-19 07:06:42,386 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:06:42,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:06:42,386 INFO L85 PathProgramCache]: Analyzing trace with hash 2089879200, now seen corresponding path program 119 times [2022-01-19 07:06:42,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:06:42,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076360943] [2022-01-19 07:06:42,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:06:42,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:06:42,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:06:42,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:06:42,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:06:42,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076360943] [2022-01-19 07:06:42,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076360943] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:06:42,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:06:42,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:06:42,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998807193] [2022-01-19 07:06:42,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:06:42,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:06:42,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:06:42,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:06:42,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:06:42,504 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:06:42,505 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 657 places, 483 transitions, 7566 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:42,505 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:06:42,505 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:06:42,505 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:06:43,765 INFO L129 PetriNetUnfolder]: 738/2728 cut-off events. [2022-01-19 07:06:43,765 INFO L130 PetriNetUnfolder]: For 42459/42465 co-relation queries the response was YES. [2022-01-19 07:06:43,819 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15389 conditions, 2728 events. 738/2728 cut-off events. For 42459/42465 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20993 event pairs, 417 based on Foata normal form. 1/2633 useless extension candidates. Maximal degree in co-relation 15153. Up to 902 conditions per place. [2022-01-19 07:06:43,827 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 265 selfloop transitions, 117 changer transitions 80/603 dead transitions. [2022-01-19 07:06:43,827 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 666 places, 603 transitions, 11184 flow [2022-01-19 07:06:43,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 07:06:43,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 07:06:43,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7185 transitions. [2022-01-19 07:06:43,830 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7603174603174603 [2022-01-19 07:06:43,830 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7185 transitions. [2022-01-19 07:06:43,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7185 transitions. [2022-01-19 07:06:43,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:06:43,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7185 transitions. [2022-01-19 07:06:43,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.66666666666666) internal successors, (7185), 45 states have internal predecessors, (7185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:43,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:43,839 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:43,839 INFO L186 Difference]: Start difference. First operand has 657 places, 483 transitions, 7566 flow. Second operand 45 states and 7185 transitions. [2022-01-19 07:06:43,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 666 places, 603 transitions, 11184 flow [2022-01-19 07:06:44,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 638 places, 603 transitions, 10541 flow, removed 31 selfloop flow, removed 28 redundant places. [2022-01-19 07:06:44,072 INFO L242 Difference]: Finished difference. Result has 667 places, 482 transitions, 7450 flow [2022-01-19 07:06:44,072 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7119, PETRI_DIFFERENCE_MINUEND_PLACES=594, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=7450, PETRI_PLACES=667, PETRI_TRANSITIONS=482} [2022-01-19 07:06:44,072 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 480 predicate places. [2022-01-19 07:06:44,072 INFO L470 AbstractCegarLoop]: Abstraction has has 667 places, 482 transitions, 7450 flow [2022-01-19 07:06:44,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:44,072 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:06:44,072 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:06:44,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2022-01-19 07:06:44,073 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:06:44,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:06:44,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1070228796, now seen corresponding path program 120 times [2022-01-19 07:06:44,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:06:44,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513241551] [2022-01-19 07:06:44,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:06:44,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:06:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:06:44,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:06:44,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:06:44,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513241551] [2022-01-19 07:06:44,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513241551] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:06:44,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:06:44,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:06:44,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294789706] [2022-01-19 07:06:44,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:06:44,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:06:44,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:06:44,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:06:44,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:06:44,188 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:06:44,189 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 667 places, 482 transitions, 7450 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:44,189 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:06:44,189 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:06:44,189 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:06:45,221 INFO L129 PetriNetUnfolder]: 732/2612 cut-off events. [2022-01-19 07:06:45,221 INFO L130 PetriNetUnfolder]: For 42026/42046 co-relation queries the response was YES. [2022-01-19 07:06:45,261 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15249 conditions, 2612 events. 732/2612 cut-off events. For 42026/42046 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 19751 event pairs, 386 based on Foata normal form. 3/2517 useless extension candidates. Maximal degree in co-relation 15000. Up to 930 conditions per place. [2022-01-19 07:06:45,268 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 241 selfloop transitions, 132 changer transitions 57/571 dead transitions. [2022-01-19 07:06:45,268 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 663 places, 571 transitions, 10293 flow [2022-01-19 07:06:45,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:06:45,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:06:45,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4660 transitions. [2022-01-19 07:06:45,271 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7651888341543513 [2022-01-19 07:06:45,271 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4660 transitions. [2022-01-19 07:06:45,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4660 transitions. [2022-01-19 07:06:45,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:06:45,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4660 transitions. [2022-01-19 07:06:45,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.68965517241378) internal successors, (4660), 29 states have internal predecessors, (4660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:45,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:45,276 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:45,276 INFO L186 Difference]: Start difference. First operand has 667 places, 482 transitions, 7450 flow. Second operand 29 states and 4660 transitions. [2022-01-19 07:06:45,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 663 places, 571 transitions, 10293 flow [2022-01-19 07:06:45,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 622 places, 571 transitions, 9759 flow, removed 100 selfloop flow, removed 41 redundant places. [2022-01-19 07:06:45,511 INFO L242 Difference]: Finished difference. Result has 636 places, 493 transitions, 7689 flow [2022-01-19 07:06:45,511 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7068, PETRI_DIFFERENCE_MINUEND_PLACES=594, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7689, PETRI_PLACES=636, PETRI_TRANSITIONS=493} [2022-01-19 07:06:45,512 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 449 predicate places. [2022-01-19 07:06:45,512 INFO L470 AbstractCegarLoop]: Abstraction has has 636 places, 493 transitions, 7689 flow [2022-01-19 07:06:45,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:45,512 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:06:45,512 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:06:45,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2022-01-19 07:06:45,512 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:06:45,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:06:45,512 INFO L85 PathProgramCache]: Analyzing trace with hash -904693200, now seen corresponding path program 121 times [2022-01-19 07:06:45,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:06:45,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482345358] [2022-01-19 07:06:45,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:06:45,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:06:45,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:06:45,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:06:45,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:06:45,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482345358] [2022-01-19 07:06:45,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482345358] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:06:45,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:06:45,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:06:45,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063577222] [2022-01-19 07:06:45,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:06:45,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:06:45,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:06:45,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:06:45,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:06:45,617 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:06:45,618 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 636 places, 493 transitions, 7689 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:45,618 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:06:45,618 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:06:45,618 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:06:46,654 INFO L129 PetriNetUnfolder]: 728/2686 cut-off events. [2022-01-19 07:06:46,654 INFO L130 PetriNetUnfolder]: For 40230/40236 co-relation queries the response was YES. [2022-01-19 07:06:46,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14951 conditions, 2686 events. 728/2686 cut-off events. For 40230/40236 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 20514 event pairs, 418 based on Foata normal form. 1/2588 useless extension candidates. Maximal degree in co-relation 14724. Up to 932 conditions per place. [2022-01-19 07:06:46,706 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 237 selfloop transitions, 136 changer transitions 57/571 dead transitions. [2022-01-19 07:06:46,706 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 648 places, 571 transitions, 10200 flow [2022-01-19 07:06:46,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 07:06:46,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 07:06:46,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4341 transitions. [2022-01-19 07:06:46,708 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7656084656084656 [2022-01-19 07:06:46,708 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4341 transitions. [2022-01-19 07:06:46,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4341 transitions. [2022-01-19 07:06:46,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:06:46,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4341 transitions. [2022-01-19 07:06:46,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 160.77777777777777) internal successors, (4341), 27 states have internal predecessors, (4341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:46,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:46,713 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:46,713 INFO L186 Difference]: Start difference. First operand has 636 places, 493 transitions, 7689 flow. Second operand 27 states and 4341 transitions. [2022-01-19 07:06:46,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 648 places, 571 transitions, 10200 flow [2022-01-19 07:06:46,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 635 places, 571 transitions, 9931 flow, removed 53 selfloop flow, removed 13 redundant places. [2022-01-19 07:06:46,946 INFO L242 Difference]: Finished difference. Result has 645 places, 497 transitions, 7891 flow [2022-01-19 07:06:46,946 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7471, PETRI_DIFFERENCE_MINUEND_PLACES=609, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=7891, PETRI_PLACES=645, PETRI_TRANSITIONS=497} [2022-01-19 07:06:46,947 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 458 predicate places. [2022-01-19 07:06:46,947 INFO L470 AbstractCegarLoop]: Abstraction has has 645 places, 497 transitions, 7891 flow [2022-01-19 07:06:46,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:46,947 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:06:46,947 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:06:46,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2022-01-19 07:06:46,947 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:06:46,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:06:46,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1538965192, now seen corresponding path program 122 times [2022-01-19 07:06:46,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:06:46,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115138787] [2022-01-19 07:06:46,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:06:46,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:06:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:06:47,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:06:47,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:06:47,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115138787] [2022-01-19 07:06:47,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115138787] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:06:47,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:06:47,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:06:47,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891873947] [2022-01-19 07:06:47,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:06:47,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:06:47,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:06:47,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:06:47,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:06:47,058 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:06:47,058 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 645 places, 497 transitions, 7891 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:47,058 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:06:47,058 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:06:47,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:06:48,334 INFO L129 PetriNetUnfolder]: 736/2735 cut-off events. [2022-01-19 07:06:48,334 INFO L130 PetriNetUnfolder]: For 41926/41932 co-relation queries the response was YES. [2022-01-19 07:06:48,378 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15250 conditions, 2735 events. 736/2735 cut-off events. For 41926/41932 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 21137 event pairs, 421 based on Foata normal form. 1/2634 useless extension candidates. Maximal degree in co-relation 15021. Up to 930 conditions per place. [2022-01-19 07:06:48,386 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 257 selfloop transitions, 126 changer transitions 67/591 dead transitions. [2022-01-19 07:06:48,386 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 670 places, 591 transitions, 10841 flow [2022-01-19 07:06:48,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:06:48,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:06:48,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6077 transitions. [2022-01-19 07:06:48,388 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7615288220551378 [2022-01-19 07:06:48,388 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6077 transitions. [2022-01-19 07:06:48,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6077 transitions. [2022-01-19 07:06:48,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:06:48,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6077 transitions. [2022-01-19 07:06:48,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.92105263157896) internal successors, (6077), 38 states have internal predecessors, (6077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:48,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:48,396 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:48,396 INFO L186 Difference]: Start difference. First operand has 645 places, 497 transitions, 7891 flow. Second operand 38 states and 6077 transitions. [2022-01-19 07:06:48,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 670 places, 591 transitions, 10841 flow [2022-01-19 07:06:48,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 652 places, 591 transitions, 10384 flow, removed 58 selfloop flow, removed 18 redundant places. [2022-01-19 07:06:48,648 INFO L242 Difference]: Finished difference. Result has 675 places, 505 transitions, 8064 flow [2022-01-19 07:06:48,648 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7508, PETRI_DIFFERENCE_MINUEND_PLACES=615, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8064, PETRI_PLACES=675, PETRI_TRANSITIONS=505} [2022-01-19 07:06:48,648 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 488 predicate places. [2022-01-19 07:06:48,648 INFO L470 AbstractCegarLoop]: Abstraction has has 675 places, 505 transitions, 8064 flow [2022-01-19 07:06:48,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:48,649 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:06:48,649 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:06:48,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2022-01-19 07:06:48,649 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:06:48,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:06:48,649 INFO L85 PathProgramCache]: Analyzing trace with hash -867861834, now seen corresponding path program 123 times [2022-01-19 07:06:48,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:06:48,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717893139] [2022-01-19 07:06:48,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:06:48,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:06:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:06:48,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:06:48,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:06:48,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717893139] [2022-01-19 07:06:48,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717893139] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:06:48,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:06:48,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:06:48,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061769886] [2022-01-19 07:06:48,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:06:48,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:06:48,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:06:48,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:06:48,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:06:48,778 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:06:48,779 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 675 places, 505 transitions, 8064 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:48,779 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:06:48,779 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:06:48,779 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:06:49,796 INFO L129 PetriNetUnfolder]: 713/2568 cut-off events. [2022-01-19 07:06:49,797 INFO L130 PetriNetUnfolder]: For 39869/39889 co-relation queries the response was YES. [2022-01-19 07:06:49,839 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14616 conditions, 2568 events. 713/2568 cut-off events. For 39869/39889 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 19407 event pairs, 386 based on Foata normal form. 3/2472 useless extension candidates. Maximal degree in co-relation 14373. Up to 928 conditions per place. [2022-01-19 07:06:49,846 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 248 selfloop transitions, 108 changer transitions 59/556 dead transitions. [2022-01-19 07:06:49,847 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 678 places, 556 transitions, 9858 flow [2022-01-19 07:06:49,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 07:06:49,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 07:06:49,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4496 transitions. [2022-01-19 07:06:49,849 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646258503401361 [2022-01-19 07:06:49,849 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4496 transitions. [2022-01-19 07:06:49,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4496 transitions. [2022-01-19 07:06:49,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:06:49,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4496 transitions. [2022-01-19 07:06:49,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.57142857142858) internal successors, (4496), 28 states have internal predecessors, (4496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:49,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:49,855 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:49,855 INFO L186 Difference]: Start difference. First operand has 675 places, 505 transitions, 8064 flow. Second operand 28 states and 4496 transitions. [2022-01-19 07:06:49,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 678 places, 556 transitions, 9858 flow [2022-01-19 07:06:50,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 656 places, 556 transitions, 9621 flow, removed 57 selfloop flow, removed 22 redundant places. [2022-01-19 07:06:50,136 INFO L242 Difference]: Finished difference. Result has 665 places, 480 transitions, 7444 flow [2022-01-19 07:06:50,136 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7864, PETRI_DIFFERENCE_MINUEND_PLACES=629, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=7444, PETRI_PLACES=665, PETRI_TRANSITIONS=480} [2022-01-19 07:06:50,136 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 478 predicate places. [2022-01-19 07:06:50,136 INFO L470 AbstractCegarLoop]: Abstraction has has 665 places, 480 transitions, 7444 flow [2022-01-19 07:06:50,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:50,137 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:06:50,137 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:06:50,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2022-01-19 07:06:50,137 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:06:50,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:06:50,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1805102650, now seen corresponding path program 124 times [2022-01-19 07:06:50,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:06:50,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870529014] [2022-01-19 07:06:50,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:06:50,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:06:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:06:50,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:06:50,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:06:50,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870529014] [2022-01-19 07:06:50,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870529014] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:06:50,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:06:50,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:06:50,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117937327] [2022-01-19 07:06:50,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:06:50,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:06:50,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:06:50,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:06:50,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:06:50,253 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:06:50,254 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 665 places, 480 transitions, 7444 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:50,254 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:06:50,254 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:06:50,254 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:06:51,432 INFO L129 PetriNetUnfolder]: 702/2635 cut-off events. [2022-01-19 07:06:51,432 INFO L130 PetriNetUnfolder]: For 38460/38466 co-relation queries the response was YES. [2022-01-19 07:06:51,475 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14262 conditions, 2635 events. 702/2635 cut-off events. For 38460/38466 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 20085 event pairs, 417 based on Foata normal form. 1/2537 useless extension candidates. Maximal degree in co-relation 14028. Up to 906 conditions per place. [2022-01-19 07:06:51,482 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 240 selfloop transitions, 110 changer transitions 68/559 dead transitions. [2022-01-19 07:06:51,482 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 559 transitions, 9920 flow [2022-01-19 07:06:51,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 07:06:51,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 07:06:51,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5916 transitions. [2022-01-19 07:06:51,485 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7613899613899614 [2022-01-19 07:06:51,485 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5916 transitions. [2022-01-19 07:06:51,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5916 transitions. [2022-01-19 07:06:51,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:06:51,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5916 transitions. [2022-01-19 07:06:51,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 159.8918918918919) internal successors, (5916), 37 states have internal predecessors, (5916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:51,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:51,492 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:51,492 INFO L186 Difference]: Start difference. First operand has 665 places, 480 transitions, 7444 flow. Second operand 37 states and 5916 transitions. [2022-01-19 07:06:51,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 559 transitions, 9920 flow [2022-01-19 07:06:51,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 632 places, 559 transitions, 9233 flow, removed 47 selfloop flow, removed 36 redundant places. [2022-01-19 07:06:51,717 INFO L242 Difference]: Finished difference. Result has 654 places, 474 transitions, 7044 flow [2022-01-19 07:06:51,717 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6897, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=7044, PETRI_PLACES=654, PETRI_TRANSITIONS=474} [2022-01-19 07:06:51,717 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 467 predicate places. [2022-01-19 07:06:51,718 INFO L470 AbstractCegarLoop]: Abstraction has has 654 places, 474 transitions, 7044 flow [2022-01-19 07:06:51,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:51,718 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:06:51,718 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:06:51,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2022-01-19 07:06:51,718 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:06:51,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:06:51,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1792242654, now seen corresponding path program 125 times [2022-01-19 07:06:51,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:06:51,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573834262] [2022-01-19 07:06:51,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:06:51,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:06:51,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:06:51,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:06:51,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:06:51,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573834262] [2022-01-19 07:06:51,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573834262] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:06:51,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:06:51,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:06:51,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532965594] [2022-01-19 07:06:51,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:06:51,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:06:51,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:06:51,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:06:51,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:06:51,821 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:06:51,822 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 654 places, 474 transitions, 7044 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:51,822 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:06:51,822 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:06:51,822 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:06:52,816 INFO L129 PetriNetUnfolder]: 687/2506 cut-off events. [2022-01-19 07:06:52,816 INFO L130 PetriNetUnfolder]: For 35136/35156 co-relation queries the response was YES. [2022-01-19 07:06:52,864 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13670 conditions, 2506 events. 687/2506 cut-off events. For 35136/35156 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 18766 event pairs, 378 based on Foata normal form. 3/2414 useless extension candidates. Maximal degree in co-relation 13437. Up to 914 conditions per place. [2022-01-19 07:06:52,871 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 237 selfloop transitions, 99 changer transitions 58/535 dead transitions. [2022-01-19 07:06:52,871 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 659 places, 535 transitions, 9061 flow [2022-01-19 07:06:52,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:06:52,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:06:52,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4652 transitions. [2022-01-19 07:06:52,873 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7638752052545156 [2022-01-19 07:06:52,874 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4652 transitions. [2022-01-19 07:06:52,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4652 transitions. [2022-01-19 07:06:52,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:06:52,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4652 transitions. [2022-01-19 07:06:52,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.41379310344828) internal successors, (4652), 29 states have internal predecessors, (4652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:52,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:52,879 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:52,879 INFO L186 Difference]: Start difference. First operand has 654 places, 474 transitions, 7044 flow. Second operand 29 states and 4652 transitions. [2022-01-19 07:06:52,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 659 places, 535 transitions, 9061 flow [2022-01-19 07:06:53,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 634 places, 535 transitions, 8702 flow, removed 83 selfloop flow, removed 25 redundant places. [2022-01-19 07:06:53,083 INFO L242 Difference]: Finished difference. Result has 645 places, 461 transitions, 6684 flow [2022-01-19 07:06:53,084 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6787, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6684, PETRI_PLACES=645, PETRI_TRANSITIONS=461} [2022-01-19 07:06:53,084 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 458 predicate places. [2022-01-19 07:06:53,084 INFO L470 AbstractCegarLoop]: Abstraction has has 645 places, 461 transitions, 6684 flow [2022-01-19 07:06:53,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:53,084 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:06:53,084 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:06:53,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2022-01-19 07:06:53,085 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:06:53,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:06:53,085 INFO L85 PathProgramCache]: Analyzing trace with hash -595019592, now seen corresponding path program 126 times [2022-01-19 07:06:53,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:06:53,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447098503] [2022-01-19 07:06:53,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:06:53,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:06:53,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:06:53,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:06:53,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:06:53,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447098503] [2022-01-19 07:06:53,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447098503] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:06:53,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:06:53,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:06:53,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937983623] [2022-01-19 07:06:53,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:06:53,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:06:53,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:06:53,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:06:53,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:06:53,188 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:06:53,188 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 645 places, 461 transitions, 6684 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:53,188 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:06:53,188 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:06:53,188 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:06:54,142 INFO L129 PetriNetUnfolder]: 660/2428 cut-off events. [2022-01-19 07:06:54,142 INFO L130 PetriNetUnfolder]: For 31312/31332 co-relation queries the response was YES. [2022-01-19 07:06:54,194 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12768 conditions, 2428 events. 660/2428 cut-off events. For 31312/31332 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 18067 event pairs, 376 based on Foata normal form. 3/2337 useless extension candidates. Maximal degree in co-relation 12543. Up to 900 conditions per place. [2022-01-19 07:06:54,202 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 214 selfloop transitions, 80 changer transitions 61/496 dead transitions. [2022-01-19 07:06:54,202 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 648 places, 496 transitions, 7898 flow [2022-01-19 07:06:54,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:06:54,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:06:54,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4804 transitions. [2022-01-19 07:06:54,205 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625396825396825 [2022-01-19 07:06:54,205 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4804 transitions. [2022-01-19 07:06:54,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4804 transitions. [2022-01-19 07:06:54,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:06:54,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4804 transitions. [2022-01-19 07:06:54,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.13333333333333) internal successors, (4804), 30 states have internal predecessors, (4804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:54,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:54,213 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:54,214 INFO L186 Difference]: Start difference. First operand has 645 places, 461 transitions, 6684 flow. Second operand 30 states and 4804 transitions. [2022-01-19 07:06:54,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 648 places, 496 transitions, 7898 flow [2022-01-19 07:06:54,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 619 places, 496 transitions, 7519 flow, removed 29 selfloop flow, removed 29 redundant places. [2022-01-19 07:06:54,392 INFO L242 Difference]: Finished difference. Result has 624 places, 419 transitions, 5505 flow [2022-01-19 07:06:54,392 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6335, PETRI_DIFFERENCE_MINUEND_PLACES=590, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=5505, PETRI_PLACES=624, PETRI_TRANSITIONS=419} [2022-01-19 07:06:54,392 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 437 predicate places. [2022-01-19 07:06:54,392 INFO L470 AbstractCegarLoop]: Abstraction has has 624 places, 419 transitions, 5505 flow [2022-01-19 07:06:54,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:54,392 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:06:54,393 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:06:54,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2022-01-19 07:06:54,393 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:06:54,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:06:54,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1959926434, now seen corresponding path program 127 times [2022-01-19 07:06:54,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:06:54,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937951349] [2022-01-19 07:06:54,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:06:54,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:06:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:06:54,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:06:54,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:06:54,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937951349] [2022-01-19 07:06:54,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937951349] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:06:54,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:06:54,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:06:54,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707354905] [2022-01-19 07:06:54,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:06:54,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:06:54,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:06:54,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:06:54,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:06:54,501 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:06:54,502 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 624 places, 419 transitions, 5505 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:54,502 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:06:54,502 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:06:54,502 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:06:55,523 INFO L129 PetriNetUnfolder]: 660/2445 cut-off events. [2022-01-19 07:06:55,523 INFO L130 PetriNetUnfolder]: For 29990/30010 co-relation queries the response was YES. [2022-01-19 07:06:55,567 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12615 conditions, 2445 events. 660/2445 cut-off events. For 29990/30010 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 18280 event pairs, 374 based on Foata normal form. 3/2357 useless extension candidates. Maximal degree in co-relation 12402. Up to 886 conditions per place. [2022-01-19 07:06:55,574 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 218 selfloop transitions, 77 changer transitions 68/504 dead transitions. [2022-01-19 07:06:55,574 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 504 transitions, 7820 flow [2022-01-19 07:06:55,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 07:06:55,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 07:06:55,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5757 transitions. [2022-01-19 07:06:55,577 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7615079365079365 [2022-01-19 07:06:55,577 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5757 transitions. [2022-01-19 07:06:55,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5757 transitions. [2022-01-19 07:06:55,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:06:55,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5757 transitions. [2022-01-19 07:06:55,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 159.91666666666666) internal successors, (5757), 36 states have internal predecessors, (5757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:55,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:55,584 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:55,584 INFO L186 Difference]: Start difference. First operand has 624 places, 419 transitions, 5505 flow. Second operand 36 states and 5757 transitions. [2022-01-19 07:06:55,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 504 transitions, 7820 flow [2022-01-19 07:06:55,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 504 transitions, 7103 flow, removed 30 selfloop flow, removed 43 redundant places. [2022-01-19 07:06:55,734 INFO L242 Difference]: Finished difference. Result has 593 places, 413 transitions, 5029 flow [2022-01-19 07:06:55,734 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4956, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=5029, PETRI_PLACES=593, PETRI_TRANSITIONS=413} [2022-01-19 07:06:55,734 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 406 predicate places. [2022-01-19 07:06:55,734 INFO L470 AbstractCegarLoop]: Abstraction has has 593 places, 413 transitions, 5029 flow [2022-01-19 07:06:55,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:55,735 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:06:55,735 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:06:55,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2022-01-19 07:06:55,735 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:06:55,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:06:55,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1141650722, now seen corresponding path program 128 times [2022-01-19 07:06:55,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:06:55,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851335429] [2022-01-19 07:06:55,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:06:55,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:06:55,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:06:55,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:06:55,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:06:55,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851335429] [2022-01-19 07:06:55,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851335429] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:06:55,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:06:55,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:06:55,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159687267] [2022-01-19 07:06:55,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:06:55,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:06:55,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:06:55,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:06:55,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:06:55,835 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:06:55,835 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 413 transitions, 5029 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:55,835 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:06:55,835 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:06:55,836 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:06:56,702 INFO L129 PetriNetUnfolder]: 625/2395 cut-off events. [2022-01-19 07:06:56,702 INFO L130 PetriNetUnfolder]: For 25207/25213 co-relation queries the response was YES. [2022-01-19 07:06:56,737 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11546 conditions, 2395 events. 625/2395 cut-off events. For 25207/25213 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 17807 event pairs, 406 based on Foata normal form. 1/2302 useless extension candidates. Maximal degree in co-relation 11338. Up to 879 conditions per place. [2022-01-19 07:06:56,743 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 203 selfloop transitions, 37 changer transitions 64/445 dead transitions. [2022-01-19 07:06:56,743 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 445 transitions, 6019 flow [2022-01-19 07:06:56,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:06:56,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:06:56,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4789 transitions. [2022-01-19 07:06:56,745 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7601587301587301 [2022-01-19 07:06:56,745 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4789 transitions. [2022-01-19 07:06:56,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4789 transitions. [2022-01-19 07:06:56,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:06:56,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4789 transitions. [2022-01-19 07:06:56,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.63333333333333) internal successors, (4789), 30 states have internal predecessors, (4789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:56,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:56,751 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:56,751 INFO L186 Difference]: Start difference. First operand has 593 places, 413 transitions, 5029 flow. Second operand 30 states and 4789 transitions. [2022-01-19 07:06:56,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 445 transitions, 6019 flow [2022-01-19 07:06:56,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 445 transitions, 5717 flow, removed 41 selfloop flow, removed 40 redundant places. [2022-01-19 07:06:56,874 INFO L242 Difference]: Finished difference. Result has 567 places, 365 transitions, 3865 flow [2022-01-19 07:06:56,874 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4749, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3865, PETRI_PLACES=567, PETRI_TRANSITIONS=365} [2022-01-19 07:06:56,874 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 380 predicate places. [2022-01-19 07:06:56,875 INFO L470 AbstractCegarLoop]: Abstraction has has 567 places, 365 transitions, 3865 flow [2022-01-19 07:06:56,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:56,875 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:06:56,875 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:06:56,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2022-01-19 07:06:56,875 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:06:56,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:06:56,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1310608822, now seen corresponding path program 129 times [2022-01-19 07:06:56,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:06:56,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898391247] [2022-01-19 07:06:56,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:06:56,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:06:56,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:06:56,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:06:56,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:06:56,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898391247] [2022-01-19 07:06:56,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898391247] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:06:56,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:06:56,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:06:56,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990121795] [2022-01-19 07:06:56,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:06:56,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:06:56,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:06:56,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:06:56,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:06:56,994 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:06:56,995 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 365 transitions, 3865 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:56,995 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:06:56,995 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:06:56,995 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:06:57,800 INFO L129 PetriNetUnfolder]: 597/2215 cut-off events. [2022-01-19 07:06:57,800 INFO L130 PetriNetUnfolder]: For 21691/21711 co-relation queries the response was YES. [2022-01-19 07:06:57,826 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10531 conditions, 2215 events. 597/2215 cut-off events. For 21691/21711 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 15913 event pairs, 364 based on Foata normal form. 3/2128 useless extension candidates. Maximal degree in co-relation 10343. Up to 863 conditions per place. [2022-01-19 07:06:57,831 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 159 selfloop transitions, 39 changer transitions 63/402 dead transitions. [2022-01-19 07:06:57,831 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 402 transitions, 4866 flow [2022-01-19 07:06:57,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:06:57,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:06:57,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4796 transitions. [2022-01-19 07:06:57,833 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7612698412698413 [2022-01-19 07:06:57,833 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4796 transitions. [2022-01-19 07:06:57,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4796 transitions. [2022-01-19 07:06:57,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:06:57,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4796 transitions. [2022-01-19 07:06:57,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.86666666666667) internal successors, (4796), 30 states have internal predecessors, (4796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:57,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:57,839 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:57,839 INFO L186 Difference]: Start difference. First operand has 567 places, 365 transitions, 3865 flow. Second operand 30 states and 4796 transitions. [2022-01-19 07:06:57,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 402 transitions, 4866 flow [2022-01-19 07:06:57,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 402 transitions, 4588 flow, removed 26 selfloop flow, removed 28 redundant places. [2022-01-19 07:06:57,924 INFO L242 Difference]: Finished difference. Result has 518 places, 323 transitions, 2957 flow [2022-01-19 07:06:57,924 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3627, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2957, PETRI_PLACES=518, PETRI_TRANSITIONS=323} [2022-01-19 07:06:57,925 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 331 predicate places. [2022-01-19 07:06:57,925 INFO L470 AbstractCegarLoop]: Abstraction has has 518 places, 323 transitions, 2957 flow [2022-01-19 07:06:57,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:57,925 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:06:57,925 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:06:57,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2022-01-19 07:06:57,925 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:06:57,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:06:57,926 INFO L85 PathProgramCache]: Analyzing trace with hash -471642470, now seen corresponding path program 130 times [2022-01-19 07:06:57,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:06:57,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457402453] [2022-01-19 07:06:57,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:06:57,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:06:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:06:58,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:06:58,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:06:58,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457402453] [2022-01-19 07:06:58,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457402453] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:06:58,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:06:58,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:06:58,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002868812] [2022-01-19 07:06:58,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:06:58,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:06:58,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:06:58,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:06:58,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:06:58,045 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:06:58,045 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 323 transitions, 2957 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:58,045 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:06:58,045 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:06:58,045 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:06:58,788 INFO L129 PetriNetUnfolder]: 565/2098 cut-off events. [2022-01-19 07:06:58,788 INFO L130 PetriNetUnfolder]: For 18525/18545 co-relation queries the response was YES. [2022-01-19 07:06:58,819 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9586 conditions, 2098 events. 565/2098 cut-off events. For 18525/18545 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 14785 event pairs, 358 based on Foata normal form. 3/2013 useless extension candidates. Maximal degree in co-relation 9406. Up to 841 conditions per place. [2022-01-19 07:06:58,823 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 133 selfloop transitions, 10 changer transitions 65/349 dead transitions. [2022-01-19 07:06:58,823 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 349 transitions, 3638 flow [2022-01-19 07:06:58,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:06:58,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:06:58,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4768 transitions. [2022-01-19 07:06:58,826 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7568253968253968 [2022-01-19 07:06:58,826 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4768 transitions. [2022-01-19 07:06:58,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4768 transitions. [2022-01-19 07:06:58,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:06:58,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4768 transitions. [2022-01-19 07:06:58,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 158.93333333333334) internal successors, (4768), 30 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:58,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:58,832 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:58,832 INFO L186 Difference]: Start difference. First operand has 518 places, 323 transitions, 2957 flow. Second operand 30 states and 4768 transitions. [2022-01-19 07:06:58,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 349 transitions, 3638 flow [2022-01-19 07:06:58,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 349 transitions, 3404 flow, removed 23 selfloop flow, removed 33 redundant places. [2022-01-19 07:06:58,905 INFO L242 Difference]: Finished difference. Result has 472 places, 268 transitions, 1865 flow [2022-01-19 07:06:58,905 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2737, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1865, PETRI_PLACES=472, PETRI_TRANSITIONS=268} [2022-01-19 07:06:58,905 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 285 predicate places. [2022-01-19 07:06:58,905 INFO L470 AbstractCegarLoop]: Abstraction has has 472 places, 268 transitions, 1865 flow [2022-01-19 07:06:58,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:58,906 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:06:58,906 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:06:58,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2022-01-19 07:06:58,906 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:06:58,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:06:58,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1399152340, now seen corresponding path program 131 times [2022-01-19 07:06:58,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:06:58,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104210263] [2022-01-19 07:06:58,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:06:58,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:06:58,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:06:59,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:06:59,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:06:59,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104210263] [2022-01-19 07:06:59,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104210263] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:06:59,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:06:59,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:06:59,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577794269] [2022-01-19 07:06:59,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:06:59,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:06:59,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:06:59,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:06:59,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:06:59,008 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:06:59,009 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 268 transitions, 1865 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:06:59,009 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:06:59,009 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:06:59,009 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:07:00,029 INFO L129 PetriNetUnfolder]: 598/2188 cut-off events. [2022-01-19 07:07:00,029 INFO L130 PetriNetUnfolder]: For 18836/18849 co-relation queries the response was YES. [2022-01-19 07:07:00,059 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9987 conditions, 2188 events. 598/2188 cut-off events. For 18836/18849 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 15645 event pairs, 275 based on Foata normal form. 1/2110 useless extension candidates. Maximal degree in co-relation 9820. Up to 777 conditions per place. [2022-01-19 07:07:00,064 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 180 selfloop transitions, 57 changer transitions 84/462 dead transitions. [2022-01-19 07:07:00,064 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 462 transitions, 5056 flow [2022-01-19 07:07:00,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-19 07:07:00,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-01-19 07:07:00,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 8587 transitions. [2022-01-19 07:07:00,071 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7572310405643738 [2022-01-19 07:07:00,071 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 8587 transitions. [2022-01-19 07:07:00,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 8587 transitions. [2022-01-19 07:07:00,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:07:00,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 8587 transitions. [2022-01-19 07:07:00,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 159.0185185185185) internal successors, (8587), 54 states have internal predecessors, (8587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:00,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 210.0) internal successors, (11550), 55 states have internal predecessors, (11550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:00,082 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 210.0) internal successors, (11550), 55 states have internal predecessors, (11550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:00,082 INFO L186 Difference]: Start difference. First operand has 472 places, 268 transitions, 1865 flow. Second operand 54 states and 8587 transitions. [2022-01-19 07:07:00,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 462 transitions, 5056 flow [2022-01-19 07:07:00,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 462 transitions, 4760 flow, removed 71 selfloop flow, removed 31 redundant places. [2022-01-19 07:07:00,139 INFO L242 Difference]: Finished difference. Result has 460 places, 281 transitions, 2171 flow [2022-01-19 07:07:00,139 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1745, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=2171, PETRI_PLACES=460, PETRI_TRANSITIONS=281} [2022-01-19 07:07:00,139 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 273 predicate places. [2022-01-19 07:07:00,139 INFO L470 AbstractCegarLoop]: Abstraction has has 460 places, 281 transitions, 2171 flow [2022-01-19 07:07:00,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:00,140 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:07:00,140 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:07:00,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2022-01-19 07:07:00,140 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:07:00,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:07:00,140 INFO L85 PathProgramCache]: Analyzing trace with hash -307017874, now seen corresponding path program 132 times [2022-01-19 07:07:00,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:07:00,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384942347] [2022-01-19 07:07:00,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:07:00,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:07:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:07:00,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:07:00,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:07:00,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384942347] [2022-01-19 07:07:00,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384942347] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:07:00,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:07:00,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:07:00,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091990896] [2022-01-19 07:07:00,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:07:00,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:07:00,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:07:00,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:07:00,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:07:00,244 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:07:00,245 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 281 transitions, 2171 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:00,245 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:07:00,245 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:07:00,245 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:07:01,328 INFO L129 PetriNetUnfolder]: 656/2333 cut-off events. [2022-01-19 07:07:01,329 INFO L130 PetriNetUnfolder]: For 24656/24669 co-relation queries the response was YES. [2022-01-19 07:07:01,361 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11655 conditions, 2333 events. 656/2333 cut-off events. For 24656/24669 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 16861 event pairs, 348 based on Foata normal form. 1/2244 useless extension candidates. Maximal degree in co-relation 11472. Up to 792 conditions per place. [2022-01-19 07:07:01,367 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 179 selfloop transitions, 54 changer transitions 79/453 dead transitions. [2022-01-19 07:07:01,367 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 453 transitions, 5913 flow [2022-01-19 07:07:01,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-19 07:07:01,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-01-19 07:07:01,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 8125 transitions. [2022-01-19 07:07:01,371 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7586367880485527 [2022-01-19 07:07:01,371 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 8125 transitions. [2022-01-19 07:07:01,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 8125 transitions. [2022-01-19 07:07:01,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:07:01,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 8125 transitions. [2022-01-19 07:07:01,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 159.31372549019608) internal successors, (8125), 51 states have internal predecessors, (8125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:01,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 210.0) internal successors, (10920), 52 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:01,382 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 210.0) internal successors, (10920), 52 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:01,382 INFO L186 Difference]: Start difference. First operand has 460 places, 281 transitions, 2171 flow. Second operand 51 states and 8125 transitions. [2022-01-19 07:07:01,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 453 transitions, 5913 flow [2022-01-19 07:07:01,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 453 transitions, 5217 flow, removed 304 selfloop flow, removed 40 redundant places. [2022-01-19 07:07:01,459 INFO L242 Difference]: Finished difference. Result has 474 places, 306 transitions, 2758 flow [2022-01-19 07:07:01,459 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2015, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=2758, PETRI_PLACES=474, PETRI_TRANSITIONS=306} [2022-01-19 07:07:01,460 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 287 predicate places. [2022-01-19 07:07:01,460 INFO L470 AbstractCegarLoop]: Abstraction has has 474 places, 306 transitions, 2758 flow [2022-01-19 07:07:01,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:01,460 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:07:01,460 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:07:01,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2022-01-19 07:07:01,460 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:07:01,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:07:01,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1321919674, now seen corresponding path program 133 times [2022-01-19 07:07:01,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:07:01,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463925221] [2022-01-19 07:07:01,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:07:01,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:07:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:07:01,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:07:01,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:07:01,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463925221] [2022-01-19 07:07:01,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463925221] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:07:01,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:07:01,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:07:01,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105734860] [2022-01-19 07:07:01,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:07:01,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:07:01,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:07:01,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:07:01,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:07:01,563 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:07:01,564 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 306 transitions, 2758 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:01,564 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:07:01,564 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:07:01,564 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:07:02,914 INFO L129 PetriNetUnfolder]: 664/2377 cut-off events. [2022-01-19 07:07:02,915 INFO L130 PetriNetUnfolder]: For 32508/32521 co-relation queries the response was YES. [2022-01-19 07:07:02,944 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12902 conditions, 2377 events. 664/2377 cut-off events. For 32508/32521 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 17345 event pairs, 288 based on Foata normal form. 1/2296 useless extension candidates. Maximal degree in co-relation 12711. Up to 805 conditions per place. [2022-01-19 07:07:02,950 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 208 selfloop transitions, 69 changer transitions 82/500 dead transitions. [2022-01-19 07:07:02,951 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 500 transitions, 6956 flow [2022-01-19 07:07:02,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-19 07:07:02,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-01-19 07:07:02,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 8437 transitions. [2022-01-19 07:07:02,954 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7580413297394429 [2022-01-19 07:07:02,954 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 8437 transitions. [2022-01-19 07:07:02,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 8437 transitions. [2022-01-19 07:07:02,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:07:02,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 8437 transitions. [2022-01-19 07:07:02,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 159.18867924528303) internal successors, (8437), 53 states have internal predecessors, (8437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:02,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 210.0) internal successors, (11340), 54 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:02,965 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 210.0) internal successors, (11340), 54 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:02,965 INFO L186 Difference]: Start difference. First operand has 474 places, 306 transitions, 2758 flow. Second operand 53 states and 8437 transitions. [2022-01-19 07:07:02,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 500 transitions, 6956 flow [2022-01-19 07:07:03,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 500 transitions, 6376 flow, removed 256 selfloop flow, removed 28 redundant places. [2022-01-19 07:07:03,070 INFO L242 Difference]: Finished difference. Result has 501 places, 321 transitions, 3101 flow [2022-01-19 07:07:03,070 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2544, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=3101, PETRI_PLACES=501, PETRI_TRANSITIONS=321} [2022-01-19 07:07:03,070 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 314 predicate places. [2022-01-19 07:07:03,070 INFO L470 AbstractCegarLoop]: Abstraction has has 501 places, 321 transitions, 3101 flow [2022-01-19 07:07:03,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:03,070 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:07:03,071 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:07:03,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2022-01-19 07:07:03,071 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:07:03,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:07:03,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1557014560, now seen corresponding path program 134 times [2022-01-19 07:07:03,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:07:03,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729955605] [2022-01-19 07:07:03,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:07:03,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:07:03,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:07:03,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:07:03,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:07:03,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729955605] [2022-01-19 07:07:03,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729955605] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:07:03,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:07:03,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:07:03,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15895032] [2022-01-19 07:07:03,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:07:03,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:07:03,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:07:03,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:07:03,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:07:03,176 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:07:03,177 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 321 transitions, 3101 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:03,177 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:07:03,177 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:07:03,177 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:07:04,392 INFO L129 PetriNetUnfolder]: 659/2357 cut-off events. [2022-01-19 07:07:04,393 INFO L130 PetriNetUnfolder]: For 35591/35604 co-relation queries the response was YES. [2022-01-19 07:07:04,431 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13261 conditions, 2357 events. 659/2357 cut-off events. For 35591/35604 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 17077 event pairs, 319 based on Foata normal form. 1/2273 useless extension candidates. Maximal degree in co-relation 13054. Up to 803 conditions per place. [2022-01-19 07:07:04,437 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 208 selfloop transitions, 66 changer transitions 82/497 dead transitions. [2022-01-19 07:07:04,437 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 497 transitions, 7651 flow [2022-01-19 07:07:04,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-19 07:07:04,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-01-19 07:07:04,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 8281 transitions. [2022-01-19 07:07:04,441 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7583333333333333 [2022-01-19 07:07:04,441 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 8281 transitions. [2022-01-19 07:07:04,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 8281 transitions. [2022-01-19 07:07:04,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:07:04,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 8281 transitions. [2022-01-19 07:07:04,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 159.25) internal successors, (8281), 52 states have internal predecessors, (8281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:04,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 210.0) internal successors, (11130), 53 states have internal predecessors, (11130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:04,451 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 210.0) internal successors, (11130), 53 states have internal predecessors, (11130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:04,451 INFO L186 Difference]: Start difference. First operand has 501 places, 321 transitions, 3101 flow. Second operand 52 states and 8281 transitions. [2022-01-19 07:07:04,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 497 transitions, 7651 flow [2022-01-19 07:07:04,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 497 transitions, 6945 flow, removed 315 selfloop flow, removed 39 redundant places. [2022-01-19 07:07:04,575 INFO L242 Difference]: Finished difference. Result has 516 places, 334 transitions, 3569 flow [2022-01-19 07:07:04,575 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2911, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=3569, PETRI_PLACES=516, PETRI_TRANSITIONS=334} [2022-01-19 07:07:04,575 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 329 predicate places. [2022-01-19 07:07:04,576 INFO L470 AbstractCegarLoop]: Abstraction has has 516 places, 334 transitions, 3569 flow [2022-01-19 07:07:04,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:04,576 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:07:04,576 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:07:04,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2022-01-19 07:07:04,576 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:07:04,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:07:04,576 INFO L85 PathProgramCache]: Analyzing trace with hash -743567740, now seen corresponding path program 135 times [2022-01-19 07:07:04,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:07:04,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861430926] [2022-01-19 07:07:04,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:07:04,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:07:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:07:04,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:07:04,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:07:04,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861430926] [2022-01-19 07:07:04,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861430926] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:07:04,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:07:04,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:07:04,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792383886] [2022-01-19 07:07:04,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:07:04,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:07:04,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:07:04,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:07:04,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:07:04,673 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:07:04,674 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 334 transitions, 3569 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:04,674 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:07:04,674 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:07:04,674 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:07:05,788 INFO L129 PetriNetUnfolder]: 651/2330 cut-off events. [2022-01-19 07:07:05,788 INFO L130 PetriNetUnfolder]: For 39361/39374 co-relation queries the response was YES. [2022-01-19 07:07:05,831 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13447 conditions, 2330 events. 651/2330 cut-off events. For 39361/39374 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 16841 event pairs, 277 based on Foata normal form. 1/2251 useless extension candidates. Maximal degree in co-relation 13232. Up to 805 conditions per place. [2022-01-19 07:07:05,838 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 196 selfloop transitions, 85 changer transitions 76/498 dead transitions. [2022-01-19 07:07:05,838 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 498 transitions, 7134 flow [2022-01-19 07:07:05,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 07:07:05,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 07:07:05,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7328 transitions. [2022-01-19 07:07:05,841 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.758592132505176 [2022-01-19 07:07:05,841 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7328 transitions. [2022-01-19 07:07:05,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7328 transitions. [2022-01-19 07:07:05,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:07:05,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7328 transitions. [2022-01-19 07:07:05,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.30434782608697) internal successors, (7328), 46 states have internal predecessors, (7328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:05,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:05,851 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:05,851 INFO L186 Difference]: Start difference. First operand has 516 places, 334 transitions, 3569 flow. Second operand 46 states and 7328 transitions. [2022-01-19 07:07:05,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 498 transitions, 7134 flow [2022-01-19 07:07:05,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 498 transitions, 6374 flow, removed 337 selfloop flow, removed 38 redundant places. [2022-01-19 07:07:06,000 INFO L242 Difference]: Finished difference. Result has 515 places, 338 transitions, 3636 flow [2022-01-19 07:07:06,000 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3283, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=3636, PETRI_PLACES=515, PETRI_TRANSITIONS=338} [2022-01-19 07:07:06,000 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 328 predicate places. [2022-01-19 07:07:06,000 INFO L470 AbstractCegarLoop]: Abstraction has has 515 places, 338 transitions, 3636 flow [2022-01-19 07:07:06,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:06,001 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:07:06,001 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:07:06,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2022-01-19 07:07:06,001 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:07:06,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:07:06,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1771564934, now seen corresponding path program 136 times [2022-01-19 07:07:06,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:07:06,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560554473] [2022-01-19 07:07:06,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:07:06,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:07:06,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:07:06,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:07:06,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:07:06,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560554473] [2022-01-19 07:07:06,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560554473] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:07:06,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:07:06,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:07:06,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64143647] [2022-01-19 07:07:06,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:07:06,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:07:06,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:07:06,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:07:06,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:07:06,101 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:07:06,102 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 338 transitions, 3636 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:06,102 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:07:06,102 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:07:06,102 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:07:07,286 INFO L129 PetriNetUnfolder]: 668/2384 cut-off events. [2022-01-19 07:07:07,286 INFO L130 PetriNetUnfolder]: For 38973/38986 co-relation queries the response was YES. [2022-01-19 07:07:07,316 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14042 conditions, 2384 events. 668/2384 cut-off events. For 38973/38986 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 17433 event pairs, 290 based on Foata normal form. 1/2301 useless extension candidates. Maximal degree in co-relation 13832. Up to 815 conditions per place. [2022-01-19 07:07:07,322 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 213 selfloop transitions, 82 changer transitions 74/510 dead transitions. [2022-01-19 07:07:07,322 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 510 transitions, 7860 flow [2022-01-19 07:07:07,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 07:07:07,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 07:07:07,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7177 transitions. [2022-01-19 07:07:07,325 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7594708994708995 [2022-01-19 07:07:07,325 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7177 transitions. [2022-01-19 07:07:07,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7177 transitions. [2022-01-19 07:07:07,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:07:07,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7177 transitions. [2022-01-19 07:07:07,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.48888888888888) internal successors, (7177), 45 states have internal predecessors, (7177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:07,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:07,334 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:07,334 INFO L186 Difference]: Start difference. First operand has 515 places, 338 transitions, 3636 flow. Second operand 45 states and 7177 transitions. [2022-01-19 07:07:07,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 510 transitions, 7860 flow [2022-01-19 07:07:07,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 510 transitions, 7239 flow, removed 263 selfloop flow, removed 33 redundant places. [2022-01-19 07:07:07,484 INFO L242 Difference]: Finished difference. Result has 525 places, 359 transitions, 4251 flow [2022-01-19 07:07:07,485 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3464, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=4251, PETRI_PLACES=525, PETRI_TRANSITIONS=359} [2022-01-19 07:07:07,485 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 338 predicate places. [2022-01-19 07:07:07,485 INFO L470 AbstractCegarLoop]: Abstraction has has 525 places, 359 transitions, 4251 flow [2022-01-19 07:07:07,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:07,485 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:07:07,485 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:07:07,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2022-01-19 07:07:07,485 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:07:07,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:07:07,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1224069286, now seen corresponding path program 137 times [2022-01-19 07:07:07,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:07:07,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115636245] [2022-01-19 07:07:07,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:07:07,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:07:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:07:07,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:07:07,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:07:07,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115636245] [2022-01-19 07:07:07,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115636245] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:07:07,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:07:07,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:07:07,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991597747] [2022-01-19 07:07:07,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:07:07,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:07:07,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:07:07,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:07:07,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:07:07,580 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:07:07,580 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 359 transitions, 4251 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:07,580 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:07:07,581 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:07:07,581 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:07:08,632 INFO L129 PetriNetUnfolder]: 663/2381 cut-off events. [2022-01-19 07:07:08,632 INFO L130 PetriNetUnfolder]: For 40672/40685 co-relation queries the response was YES. [2022-01-19 07:07:08,668 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14289 conditions, 2381 events. 663/2381 cut-off events. For 40672/40685 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 17413 event pairs, 292 based on Foata normal form. 1/2299 useless extension candidates. Maximal degree in co-relation 14075. Up to 813 conditions per place. [2022-01-19 07:07:08,676 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 214 selfloop transitions, 82 changer transitions 75/512 dead transitions. [2022-01-19 07:07:08,676 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 512 transitions, 8003 flow [2022-01-19 07:07:08,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 07:07:08,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 07:07:08,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7335 transitions. [2022-01-19 07:07:08,679 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7593167701863354 [2022-01-19 07:07:08,679 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7335 transitions. [2022-01-19 07:07:08,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7335 transitions. [2022-01-19 07:07:08,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:07:08,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7335 transitions. [2022-01-19 07:07:08,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.45652173913044) internal successors, (7335), 46 states have internal predecessors, (7335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:08,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:08,688 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:08,688 INFO L186 Difference]: Start difference. First operand has 525 places, 359 transitions, 4251 flow. Second operand 46 states and 7335 transitions. [2022-01-19 07:07:08,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 512 transitions, 8003 flow [2022-01-19 07:07:08,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 512 transitions, 7305 flow, removed 330 selfloop flow, removed 27 redundant places. [2022-01-19 07:07:08,868 INFO L242 Difference]: Finished difference. Result has 543 places, 362 transitions, 4329 flow [2022-01-19 07:07:08,868 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3998, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=4329, PETRI_PLACES=543, PETRI_TRANSITIONS=362} [2022-01-19 07:07:08,868 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 356 predicate places. [2022-01-19 07:07:08,868 INFO L470 AbstractCegarLoop]: Abstraction has has 543 places, 362 transitions, 4329 flow [2022-01-19 07:07:08,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:08,869 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:07:08,869 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:07:08,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2022-01-19 07:07:08,869 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:07:08,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:07:08,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1784084954, now seen corresponding path program 138 times [2022-01-19 07:07:08,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:07:08,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929516527] [2022-01-19 07:07:08,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:07:08,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:07:08,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:07:08,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:07:08,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:07:08,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929516527] [2022-01-19 07:07:08,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929516527] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:07:08,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:07:08,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:07:08,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784994992] [2022-01-19 07:07:08,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:07:08,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:07:08,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:07:08,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:07:08,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:07:08,970 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:07:08,971 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 362 transitions, 4329 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:08,971 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:07:08,971 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:07:08,971 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:07:10,206 INFO L129 PetriNetUnfolder]: 699/2451 cut-off events. [2022-01-19 07:07:10,206 INFO L130 PetriNetUnfolder]: For 44432/44445 co-relation queries the response was YES. [2022-01-19 07:07:10,249 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15235 conditions, 2451 events. 699/2451 cut-off events. For 44432/44445 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 17943 event pairs, 333 based on Foata normal form. 1/2365 useless extension candidates. Maximal degree in co-relation 15015. Up to 823 conditions per place. [2022-01-19 07:07:10,257 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 212 selfloop transitions, 100 changer transitions 73/526 dead transitions. [2022-01-19 07:07:10,257 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 526 transitions, 8605 flow [2022-01-19 07:07:10,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-19 07:07:10,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-01-19 07:07:10,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7021 transitions. [2022-01-19 07:07:10,260 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7598484848484849 [2022-01-19 07:07:10,260 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7021 transitions. [2022-01-19 07:07:10,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7021 transitions. [2022-01-19 07:07:10,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:07:10,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7021 transitions. [2022-01-19 07:07:10,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.5681818181818) internal successors, (7021), 44 states have internal predecessors, (7021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:10,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:10,269 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:10,269 INFO L186 Difference]: Start difference. First operand has 543 places, 362 transitions, 4329 flow. Second operand 44 states and 7021 transitions. [2022-01-19 07:07:10,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 526 transitions, 8605 flow [2022-01-19 07:07:10,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 526 transitions, 8035 flow, removed 239 selfloop flow, removed 31 redundant places. [2022-01-19 07:07:10,449 INFO L242 Difference]: Finished difference. Result has 558 places, 386 transitions, 5069 flow [2022-01-19 07:07:10,449 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4154, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=5069, PETRI_PLACES=558, PETRI_TRANSITIONS=386} [2022-01-19 07:07:10,449 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 371 predicate places. [2022-01-19 07:07:10,449 INFO L470 AbstractCegarLoop]: Abstraction has has 558 places, 386 transitions, 5069 flow [2022-01-19 07:07:10,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:10,449 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:07:10,449 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:07:10,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2022-01-19 07:07:10,450 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:07:10,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:07:10,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1765005700, now seen corresponding path program 139 times [2022-01-19 07:07:10,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:07:10,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326023508] [2022-01-19 07:07:10,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:07:10,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:07:10,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:07:10,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:07:10,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:07:10,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326023508] [2022-01-19 07:07:10,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326023508] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:07:10,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:07:10,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:07:10,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934761839] [2022-01-19 07:07:10,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:07:10,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:07:10,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:07:10,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:07:10,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:07:10,548 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:07:10,548 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 386 transitions, 5069 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:10,548 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:07:10,549 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:07:10,549 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:07:11,802 INFO L129 PetriNetUnfolder]: 730/2548 cut-off events. [2022-01-19 07:07:11,803 INFO L130 PetriNetUnfolder]: For 54948/54961 co-relation queries the response was YES. [2022-01-19 07:07:11,835 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16887 conditions, 2548 events. 730/2548 cut-off events. For 54948/54961 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 18969 event pairs, 327 based on Foata normal form. 1/2462 useless extension candidates. Maximal degree in co-relation 16659. Up to 833 conditions per place. [2022-01-19 07:07:11,842 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 238 selfloop transitions, 98 changer transitions 72/549 dead transitions. [2022-01-19 07:07:11,843 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 572 places, 549 transitions, 9753 flow [2022-01-19 07:07:11,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 07:07:11,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 07:07:11,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7340 transitions. [2022-01-19 07:07:11,846 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7598343685300207 [2022-01-19 07:07:11,846 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7340 transitions. [2022-01-19 07:07:11,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7340 transitions. [2022-01-19 07:07:11,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:07:11,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7340 transitions. [2022-01-19 07:07:11,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.56521739130434) internal successors, (7340), 46 states have internal predecessors, (7340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:11,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:11,855 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:11,855 INFO L186 Difference]: Start difference. First operand has 558 places, 386 transitions, 5069 flow. Second operand 46 states and 7340 transitions. [2022-01-19 07:07:11,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 572 places, 549 transitions, 9753 flow [2022-01-19 07:07:12,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 549 transitions, 8893 flow, removed 378 selfloop flow, removed 31 redundant places. [2022-01-19 07:07:12,054 INFO L242 Difference]: Finished difference. Result has 574 places, 405 transitions, 5573 flow [2022-01-19 07:07:12,055 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4810, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=5573, PETRI_PLACES=574, PETRI_TRANSITIONS=405} [2022-01-19 07:07:12,055 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 387 predicate places. [2022-01-19 07:07:12,055 INFO L470 AbstractCegarLoop]: Abstraction has has 574 places, 405 transitions, 5573 flow [2022-01-19 07:07:12,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:12,055 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:07:12,055 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:07:12,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2022-01-19 07:07:12,055 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:07:12,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:07:12,056 INFO L85 PathProgramCache]: Analyzing trace with hash -408610136, now seen corresponding path program 140 times [2022-01-19 07:07:12,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:07:12,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980495036] [2022-01-19 07:07:12,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:07:12,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:07:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:07:12,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:07:12,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:07:12,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980495036] [2022-01-19 07:07:12,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980495036] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:07:12,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:07:12,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:07:12,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718497158] [2022-01-19 07:07:12,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:07:12,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:07:12,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:07:12,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:07:12,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:07:12,157 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:07:12,158 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 405 transitions, 5573 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:12,158 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:07:12,158 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:07:12,158 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:07:13,329 INFO L129 PetriNetUnfolder]: 724/2543 cut-off events. [2022-01-19 07:07:13,330 INFO L130 PetriNetUnfolder]: For 54348/54361 co-relation queries the response was YES. [2022-01-19 07:07:13,371 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16899 conditions, 2543 events. 724/2543 cut-off events. For 54348/54361 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 18994 event pairs, 335 based on Foata normal form. 1/2456 useless extension candidates. Maximal degree in co-relation 16667. Up to 831 conditions per place. [2022-01-19 07:07:13,379 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 246 selfloop transitions, 97 changer transitions 73/557 dead transitions. [2022-01-19 07:07:13,379 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 557 transitions, 10015 flow [2022-01-19 07:07:13,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 07:07:13,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 07:07:13,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7186 transitions. [2022-01-19 07:07:13,382 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7604232804232804 [2022-01-19 07:07:13,382 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7186 transitions. [2022-01-19 07:07:13,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7186 transitions. [2022-01-19 07:07:13,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:07:13,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7186 transitions. [2022-01-19 07:07:13,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.6888888888889) internal successors, (7186), 45 states have internal predecessors, (7186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:13,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:13,391 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:13,391 INFO L186 Difference]: Start difference. First operand has 574 places, 405 transitions, 5573 flow. Second operand 45 states and 7186 transitions. [2022-01-19 07:07:13,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 557 transitions, 10015 flow [2022-01-19 07:07:13,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 557 transitions, 9348 flow, removed 297 selfloop flow, removed 28 redundant places. [2022-01-19 07:07:13,631 INFO L242 Difference]: Finished difference. Result has 591 places, 413 transitions, 5899 flow [2022-01-19 07:07:13,631 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5375, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=5899, PETRI_PLACES=591, PETRI_TRANSITIONS=413} [2022-01-19 07:07:13,631 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 404 predicate places. [2022-01-19 07:07:13,631 INFO L470 AbstractCegarLoop]: Abstraction has has 591 places, 413 transitions, 5899 flow [2022-01-19 07:07:13,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:13,631 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:07:13,631 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:07:13,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2022-01-19 07:07:13,632 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:07:13,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:07:13,632 INFO L85 PathProgramCache]: Analyzing trace with hash -2099298558, now seen corresponding path program 141 times [2022-01-19 07:07:13,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:07:13,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700026060] [2022-01-19 07:07:13,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:07:13,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:07:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:07:13,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:07:13,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:07:13,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700026060] [2022-01-19 07:07:13,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700026060] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:07:13,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:07:13,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:07:13,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13793475] [2022-01-19 07:07:13,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:07:13,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:07:13,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:07:13,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:07:13,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:07:13,749 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:07:13,750 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 413 transitions, 5899 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:13,750 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:07:13,750 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:07:13,750 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:07:15,011 INFO L129 PetriNetUnfolder]: 771/2644 cut-off events. [2022-01-19 07:07:15,011 INFO L130 PetriNetUnfolder]: For 58752/58765 co-relation queries the response was YES. [2022-01-19 07:07:15,057 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18320 conditions, 2644 events. 771/2644 cut-off events. For 58752/58765 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 19749 event pairs, 390 based on Foata normal form. 1/2552 useless extension candidates. Maximal degree in co-relation 18080. Up to 846 conditions per place. [2022-01-19 07:07:15,065 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 209 selfloop transitions, 136 changer transitions 71/557 dead transitions. [2022-01-19 07:07:15,066 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 557 transitions, 10105 flow [2022-01-19 07:07:15,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-19 07:07:15,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-01-19 07:07:15,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6865 transitions. [2022-01-19 07:07:15,068 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7602436323366556 [2022-01-19 07:07:15,068 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6865 transitions. [2022-01-19 07:07:15,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6865 transitions. [2022-01-19 07:07:15,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:07:15,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6865 transitions. [2022-01-19 07:07:15,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 159.65116279069767) internal successors, (6865), 43 states have internal predecessors, (6865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:15,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:15,077 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:15,077 INFO L186 Difference]: Start difference. First operand has 591 places, 413 transitions, 5899 flow. Second operand 43 states and 6865 transitions. [2022-01-19 07:07:15,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 557 transitions, 10105 flow [2022-01-19 07:07:15,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 557 transitions, 9477 flow, removed 257 selfloop flow, removed 30 redundant places. [2022-01-19 07:07:15,346 INFO L242 Difference]: Finished difference. Result has 607 places, 435 transitions, 6626 flow [2022-01-19 07:07:15,346 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5652, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=6626, PETRI_PLACES=607, PETRI_TRANSITIONS=435} [2022-01-19 07:07:15,346 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 420 predicate places. [2022-01-19 07:07:15,346 INFO L470 AbstractCegarLoop]: Abstraction has has 607 places, 435 transitions, 6626 flow [2022-01-19 07:07:15,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:15,347 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:07:15,347 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:07:15,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2022-01-19 07:07:15,347 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:07:15,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:07:15,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1043525350, now seen corresponding path program 142 times [2022-01-19 07:07:15,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:07:15,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529869264] [2022-01-19 07:07:15,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:07:15,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:07:15,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:07:15,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:07:15,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:07:15,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529869264] [2022-01-19 07:07:15,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529869264] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:07:15,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:07:15,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:07:15,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868030257] [2022-01-19 07:07:15,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:07:15,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:07:15,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:07:15,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:07:15,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:07:15,454 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:07:15,454 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 607 places, 435 transitions, 6626 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:15,454 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:07:15,454 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:07:15,454 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:07:16,869 INFO L129 PetriNetUnfolder]: 800/2722 cut-off events. [2022-01-19 07:07:16,869 INFO L130 PetriNetUnfolder]: For 69906/69919 co-relation queries the response was YES. [2022-01-19 07:07:16,915 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19872 conditions, 2722 events. 800/2722 cut-off events. For 69906/69919 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 20567 event pairs, 392 based on Foata normal form. 1/2631 useless extension candidates. Maximal degree in co-relation 19624. Up to 855 conditions per place. [2022-01-19 07:07:16,925 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 259 selfloop transitions, 110 changer transitions 70/580 dead transitions. [2022-01-19 07:07:16,925 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 580 transitions, 11335 flow [2022-01-19 07:07:16,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 07:07:16,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 07:07:16,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7341 transitions. [2022-01-19 07:07:16,929 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7599378881987577 [2022-01-19 07:07:16,929 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7341 transitions. [2022-01-19 07:07:16,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7341 transitions. [2022-01-19 07:07:16,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:07:16,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7341 transitions. [2022-01-19 07:07:16,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.58695652173913) internal successors, (7341), 46 states have internal predecessors, (7341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:16,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:16,942 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:16,942 INFO L186 Difference]: Start difference. First operand has 607 places, 435 transitions, 6626 flow. Second operand 46 states and 7341 transitions. [2022-01-19 07:07:16,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 580 transitions, 11335 flow [2022-01-19 07:07:17,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 580 transitions, 10632 flow, removed 247 selfloop flow, removed 24 redundant places. [2022-01-19 07:07:17,276 INFO L242 Difference]: Finished difference. Result has 631 places, 454 transitions, 7128 flow [2022-01-19 07:07:17,276 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6317, PETRI_DIFFERENCE_MINUEND_PLACES=553, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=7128, PETRI_PLACES=631, PETRI_TRANSITIONS=454} [2022-01-19 07:07:17,276 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 444 predicate places. [2022-01-19 07:07:17,277 INFO L470 AbstractCegarLoop]: Abstraction has has 631 places, 454 transitions, 7128 flow [2022-01-19 07:07:17,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:17,277 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:07:17,277 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:07:17,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2022-01-19 07:07:17,277 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:07:17,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:07:17,277 INFO L85 PathProgramCache]: Analyzing trace with hash 837093764, now seen corresponding path program 143 times [2022-01-19 07:07:17,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:07:17,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625713156] [2022-01-19 07:07:17,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:07:17,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:07:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:07:17,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:07:17,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:07:17,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625713156] [2022-01-19 07:07:17,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625713156] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:07:17,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:07:17,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:07:17,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324470175] [2022-01-19 07:07:17,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:07:17,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:07:17,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:07:17,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:07:17,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:07:17,392 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:07:17,393 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 631 places, 454 transitions, 7128 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:17,393 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:07:17,393 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:07:17,393 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:07:18,848 INFO L129 PetriNetUnfolder]: 837/2810 cut-off events. [2022-01-19 07:07:18,848 INFO L130 PetriNetUnfolder]: For 84166/84179 co-relation queries the response was YES. [2022-01-19 07:07:18,900 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21550 conditions, 2810 events. 837/2810 cut-off events. For 84166/84179 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 21264 event pairs, 425 based on Foata normal form. 1/2718 useless extension candidates. Maximal degree in co-relation 21290. Up to 865 conditions per place. [2022-01-19 07:07:18,910 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 274 selfloop transitions, 117 changer transitions 71/603 dead transitions. [2022-01-19 07:07:18,910 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 641 places, 603 transitions, 12182 flow [2022-01-19 07:07:18,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-19 07:07:18,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-01-19 07:07:18,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7032 transitions. [2022-01-19 07:07:18,913 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7610389610389611 [2022-01-19 07:07:18,913 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7032 transitions. [2022-01-19 07:07:18,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7032 transitions. [2022-01-19 07:07:18,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:07:18,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7032 transitions. [2022-01-19 07:07:18,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.8181818181818) internal successors, (7032), 44 states have internal predecessors, (7032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:18,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:18,921 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:18,921 INFO L186 Difference]: Start difference. First operand has 631 places, 454 transitions, 7128 flow. Second operand 44 states and 7032 transitions. [2022-01-19 07:07:18,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 641 places, 603 transitions, 12182 flow [2022-01-19 07:07:19,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 603 transitions, 11483 flow, removed 300 selfloop flow, removed 30 redundant places. [2022-01-19 07:07:19,267 INFO L242 Difference]: Finished difference. Result has 647 places, 476 transitions, 7857 flow [2022-01-19 07:07:19,267 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6889, PETRI_DIFFERENCE_MINUEND_PLACES=568, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=7857, PETRI_PLACES=647, PETRI_TRANSITIONS=476} [2022-01-19 07:07:19,267 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 460 predicate places. [2022-01-19 07:07:19,267 INFO L470 AbstractCegarLoop]: Abstraction has has 647 places, 476 transitions, 7857 flow [2022-01-19 07:07:19,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:19,267 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:07:19,268 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:07:19,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2022-01-19 07:07:19,268 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:07:19,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:07:19,268 INFO L85 PathProgramCache]: Analyzing trace with hash -605808158, now seen corresponding path program 144 times [2022-01-19 07:07:19,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:07:19,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841583097] [2022-01-19 07:07:19,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:07:19,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:07:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:07:19,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:07:19,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:07:19,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841583097] [2022-01-19 07:07:19,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841583097] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:07:19,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:07:19,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:07:19,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744389633] [2022-01-19 07:07:19,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:07:19,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:07:19,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:07:19,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:07:19,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:07:19,386 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:07:19,386 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 647 places, 476 transitions, 7857 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:19,387 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:07:19,387 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:07:19,387 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:07:20,918 INFO L129 PetriNetUnfolder]: 831/2794 cut-off events. [2022-01-19 07:07:20,918 INFO L130 PetriNetUnfolder]: For 88970/88983 co-relation queries the response was YES. [2022-01-19 07:07:20,961 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21709 conditions, 2794 events. 831/2794 cut-off events. For 88970/88983 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 21158 event pairs, 399 based on Foata normal form. 1/2703 useless extension candidates. Maximal degree in co-relation 21441. Up to 863 conditions per place. [2022-01-19 07:07:20,971 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 278 selfloop transitions, 118 changer transitions 72/609 dead transitions. [2022-01-19 07:07:20,971 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 660 places, 609 transitions, 12719 flow [2022-01-19 07:07:20,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 07:07:20,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 07:07:20,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7187 transitions. [2022-01-19 07:07:20,974 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7605291005291005 [2022-01-19 07:07:20,974 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7187 transitions. [2022-01-19 07:07:20,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7187 transitions. [2022-01-19 07:07:20,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:07:20,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7187 transitions. [2022-01-19 07:07:20,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.7111111111111) internal successors, (7187), 45 states have internal predecessors, (7187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:20,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:20,982 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:20,982 INFO L186 Difference]: Start difference. First operand has 647 places, 476 transitions, 7857 flow. Second operand 45 states and 7187 transitions. [2022-01-19 07:07:20,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 660 places, 609 transitions, 12719 flow [2022-01-19 07:07:21,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 630 places, 609 transitions, 11903 flow, removed 343 selfloop flow, removed 30 redundant places. [2022-01-19 07:07:21,361 INFO L242 Difference]: Finished difference. Result has 663 places, 483 transitions, 8130 flow [2022-01-19 07:07:21,361 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7581, PETRI_DIFFERENCE_MINUEND_PLACES=586, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=8130, PETRI_PLACES=663, PETRI_TRANSITIONS=483} [2022-01-19 07:07:21,361 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 476 predicate places. [2022-01-19 07:07:21,361 INFO L470 AbstractCegarLoop]: Abstraction has has 663 places, 483 transitions, 8130 flow [2022-01-19 07:07:21,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:21,362 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:07:21,362 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:07:21,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2022-01-19 07:07:21,362 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:07:21,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:07:21,362 INFO L85 PathProgramCache]: Analyzing trace with hash -109358202, now seen corresponding path program 145 times [2022-01-19 07:07:21,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:07:21,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181813718] [2022-01-19 07:07:21,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:07:21,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:07:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:07:21,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:07:21,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:07:21,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181813718] [2022-01-19 07:07:21,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181813718] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:07:21,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:07:21,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:07:21,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905117051] [2022-01-19 07:07:21,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:07:21,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:07:21,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:07:21,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:07:21,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:07:21,454 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:07:21,455 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 663 places, 483 transitions, 8130 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:21,455 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:07:21,455 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:07:21,455 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:07:22,668 INFO L129 PetriNetUnfolder]: 820/2770 cut-off events. [2022-01-19 07:07:22,668 INFO L130 PetriNetUnfolder]: For 90131/90144 co-relation queries the response was YES. [2022-01-19 07:07:22,722 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21082 conditions, 2770 events. 820/2770 cut-off events. For 90131/90144 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 21016 event pairs, 302 based on Foata normal form. 1/2687 useless extension candidates. Maximal degree in co-relation 20808. Up to 861 conditions per place. [2022-01-19 07:07:22,732 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 264 selfloop transitions, 151 changer transitions 67/623 dead transitions. [2022-01-19 07:07:22,732 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 623 transitions, 11826 flow [2022-01-19 07:07:22,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:07:22,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:07:22,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6068 transitions. [2022-01-19 07:07:22,734 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7604010025062656 [2022-01-19 07:07:22,734 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6068 transitions. [2022-01-19 07:07:22,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6068 transitions. [2022-01-19 07:07:22,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:07:22,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6068 transitions. [2022-01-19 07:07:22,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.68421052631578) internal successors, (6068), 38 states have internal predecessors, (6068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:22,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:22,742 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:22,742 INFO L186 Difference]: Start difference. First operand has 663 places, 483 transitions, 8130 flow. Second operand 38 states and 6068 transitions. [2022-01-19 07:07:22,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 623 transitions, 11826 flow [2022-01-19 07:07:23,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 638 places, 623 transitions, 11227 flow, removed 226 selfloop flow, removed 30 redundant places. [2022-01-19 07:07:23,133 INFO L242 Difference]: Finished difference. Result has 660 places, 487 transitions, 8323 flow [2022-01-19 07:07:23,133 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7834, PETRI_DIFFERENCE_MINUEND_PLACES=601, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8323, PETRI_PLACES=660, PETRI_TRANSITIONS=487} [2022-01-19 07:07:23,133 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 473 predicate places. [2022-01-19 07:07:23,133 INFO L470 AbstractCegarLoop]: Abstraction has has 660 places, 487 transitions, 8323 flow [2022-01-19 07:07:23,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:23,134 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:07:23,134 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:07:23,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2022-01-19 07:07:23,134 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:07:23,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:07:23,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1444901534, now seen corresponding path program 146 times [2022-01-19 07:07:23,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:07:23,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894914726] [2022-01-19 07:07:23,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:07:23,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:07:23,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:07:23,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:07:23,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:07:23,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894914726] [2022-01-19 07:07:23,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894914726] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:07:23,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:07:23,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:07:23,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339872404] [2022-01-19 07:07:23,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:07:23,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:07:23,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:07:23,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:07:23,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:07:23,235 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:07:23,236 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 660 places, 487 transitions, 8323 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:23,236 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:07:23,236 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:07:23,236 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:07:24,492 INFO L129 PetriNetUnfolder]: 838/2831 cut-off events. [2022-01-19 07:07:24,492 INFO L130 PetriNetUnfolder]: For 96350/96363 co-relation queries the response was YES. [2022-01-19 07:07:24,559 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22062 conditions, 2831 events. 838/2831 cut-off events. For 96350/96363 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 21683 event pairs, 339 based on Foata normal form. 1/2744 useless extension candidates. Maximal degree in co-relation 21794. Up to 867 conditions per place. [2022-01-19 07:07:24,571 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 286 selfloop transitions, 141 changer transitions 66/634 dead transitions. [2022-01-19 07:07:24,571 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 672 places, 634 transitions, 12707 flow [2022-01-19 07:07:24,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 07:07:24,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 07:07:24,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5917 transitions. [2022-01-19 07:07:24,573 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7615186615186615 [2022-01-19 07:07:24,573 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5917 transitions. [2022-01-19 07:07:24,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5917 transitions. [2022-01-19 07:07:24,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:07:24,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5917 transitions. [2022-01-19 07:07:24,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 159.9189189189189) internal successors, (5917), 37 states have internal predecessors, (5917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:24,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:24,581 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:24,581 INFO L186 Difference]: Start difference. First operand has 660 places, 487 transitions, 8323 flow. Second operand 37 states and 5917 transitions. [2022-01-19 07:07:24,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 672 places, 634 transitions, 12707 flow [2022-01-19 07:07:24,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 647 places, 634 transitions, 12168 flow, removed 192 selfloop flow, removed 25 redundant places. [2022-01-19 07:07:24,985 INFO L242 Difference]: Finished difference. Result has 670 places, 508 transitions, 9164 flow [2022-01-19 07:07:24,985 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8078, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=9164, PETRI_PLACES=670, PETRI_TRANSITIONS=508} [2022-01-19 07:07:24,985 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 483 predicate places. [2022-01-19 07:07:24,985 INFO L470 AbstractCegarLoop]: Abstraction has has 670 places, 508 transitions, 9164 flow [2022-01-19 07:07:24,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:24,986 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:07:24,986 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:07:24,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2022-01-19 07:07:24,986 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:07:24,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:07:24,986 INFO L85 PathProgramCache]: Analyzing trace with hash 125277454, now seen corresponding path program 147 times [2022-01-19 07:07:24,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:07:24,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132734860] [2022-01-19 07:07:24,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:07:24,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:07:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:07:25,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:07:25,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:07:25,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132734860] [2022-01-19 07:07:25,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132734860] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:07:25,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:07:25,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:07:25,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150912205] [2022-01-19 07:07:25,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:07:25,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:07:25,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:07:25,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:07:25,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:07:25,095 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:07:25,096 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 670 places, 508 transitions, 9164 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:25,096 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:07:25,096 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:07:25,096 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:07:26,324 INFO L129 PetriNetUnfolder]: 833/2828 cut-off events. [2022-01-19 07:07:26,325 INFO L130 PetriNetUnfolder]: For 98272/98285 co-relation queries the response was YES. [2022-01-19 07:07:26,381 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22333 conditions, 2828 events. 833/2828 cut-off events. For 98272/98285 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 21753 event pairs, 333 based on Foata normal form. 1/2740 useless extension candidates. Maximal degree in co-relation 22061. Up to 865 conditions per place. [2022-01-19 07:07:26,392 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 300 selfloop transitions, 138 changer transitions 65/644 dead transitions. [2022-01-19 07:07:26,392 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 684 places, 644 transitions, 13346 flow [2022-01-19 07:07:26,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:07:26,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:07:26,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6077 transitions. [2022-01-19 07:07:26,395 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7615288220551378 [2022-01-19 07:07:26,395 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6077 transitions. [2022-01-19 07:07:26,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6077 transitions. [2022-01-19 07:07:26,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:07:26,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6077 transitions. [2022-01-19 07:07:26,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.92105263157896) internal successors, (6077), 38 states have internal predecessors, (6077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:26,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:26,403 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:26,403 INFO L186 Difference]: Start difference. First operand has 670 places, 508 transitions, 9164 flow. Second operand 38 states and 6077 transitions. [2022-01-19 07:07:26,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 684 places, 644 transitions, 13346 flow [2022-01-19 07:07:26,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 664 places, 644 transitions, 12489 flow, removed 397 selfloop flow, removed 20 redundant places. [2022-01-19 07:07:26,902 INFO L242 Difference]: Finished difference. Result has 687 places, 516 transitions, 9316 flow [2022-01-19 07:07:26,902 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8761, PETRI_DIFFERENCE_MINUEND_PLACES=627, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9316, PETRI_PLACES=687, PETRI_TRANSITIONS=516} [2022-01-19 07:07:26,902 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 500 predicate places. [2022-01-19 07:07:26,902 INFO L470 AbstractCegarLoop]: Abstraction has has 687 places, 516 transitions, 9316 flow [2022-01-19 07:07:26,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:26,903 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:07:26,903 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:07:26,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2022-01-19 07:07:26,903 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:07:26,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:07:26,903 INFO L85 PathProgramCache]: Analyzing trace with hash 2123983226, now seen corresponding path program 148 times [2022-01-19 07:07:26,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:07:26,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428490508] [2022-01-19 07:07:26,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:07:26,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:07:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:07:27,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:07:27,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:07:27,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428490508] [2022-01-19 07:07:27,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428490508] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:07:27,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:07:27,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:07:27,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694466706] [2022-01-19 07:07:27,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:07:27,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:07:27,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:07:27,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:07:27,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:07:27,004 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:07:27,005 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 687 places, 516 transitions, 9316 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:27,005 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:07:27,005 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:07:27,005 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:07:28,311 INFO L129 PetriNetUnfolder]: 828/2824 cut-off events. [2022-01-19 07:07:28,311 INFO L130 PetriNetUnfolder]: For 92967/92980 co-relation queries the response was YES. [2022-01-19 07:07:28,372 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21934 conditions, 2824 events. 828/2824 cut-off events. For 92967/92980 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 21784 event pairs, 330 based on Foata normal form. 1/2738 useless extension candidates. Maximal degree in co-relation 21658. Up to 863 conditions per place. [2022-01-19 07:07:28,382 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 302 selfloop transitions, 134 changer transitions 66/643 dead transitions. [2022-01-19 07:07:28,382 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 700 places, 643 transitions, 13040 flow [2022-01-19 07:07:28,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:07:28,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:07:28,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6076 transitions. [2022-01-19 07:07:28,385 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7614035087719299 [2022-01-19 07:07:28,385 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6076 transitions. [2022-01-19 07:07:28,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6076 transitions. [2022-01-19 07:07:28,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:07:28,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6076 transitions. [2022-01-19 07:07:28,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.89473684210526) internal successors, (6076), 38 states have internal predecessors, (6076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:28,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:28,392 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:28,392 INFO L186 Difference]: Start difference. First operand has 687 places, 516 transitions, 9316 flow. Second operand 38 states and 6076 transitions. [2022-01-19 07:07:28,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 700 places, 643 transitions, 13040 flow [2022-01-19 07:07:28,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 677 places, 643 transitions, 12533 flow, removed 169 selfloop flow, removed 23 redundant places. [2022-01-19 07:07:28,858 INFO L242 Difference]: Finished difference. Result has 699 places, 519 transitions, 9454 flow [2022-01-19 07:07:28,858 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9034, PETRI_DIFFERENCE_MINUEND_PLACES=640, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9454, PETRI_PLACES=699, PETRI_TRANSITIONS=519} [2022-01-19 07:07:28,859 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 512 predicate places. [2022-01-19 07:07:28,859 INFO L470 AbstractCegarLoop]: Abstraction has has 699 places, 519 transitions, 9454 flow [2022-01-19 07:07:28,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:28,859 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:07:28,859 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:07:28,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2022-01-19 07:07:28,859 INFO L402 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:07:28,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:07:28,859 INFO L85 PathProgramCache]: Analyzing trace with hash 974199346, now seen corresponding path program 149 times [2022-01-19 07:07:28,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:07:28,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665216053] [2022-01-19 07:07:28,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:07:28,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:07:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:07:28,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:07:28,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:07:28,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665216053] [2022-01-19 07:07:28,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665216053] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:07:28,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:07:28,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:07:28,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941236720] [2022-01-19 07:07:28,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:07:28,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:07:28,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:07:28,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:07:28,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:07:28,956 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:07:28,957 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 699 places, 519 transitions, 9454 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:28,957 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:07:28,957 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:07:28,957 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:07:30,311 INFO L129 PetriNetUnfolder]: 859/2890 cut-off events. [2022-01-19 07:07:30,311 INFO L130 PetriNetUnfolder]: For 96266/96279 co-relation queries the response was YES. [2022-01-19 07:07:30,367 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23061 conditions, 2890 events. 859/2890 cut-off events. For 96266/96279 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 22205 event pairs, 390 based on Foata normal form. 1/2797 useless extension candidates. Maximal degree in co-relation 22782. Up to 869 conditions per place. [2022-01-19 07:07:30,380 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 284 selfloop transitions, 171 changer transitions 66/662 dead transitions. [2022-01-19 07:07:30,381 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 710 places, 662 transitions, 14094 flow [2022-01-19 07:07:30,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 07:07:30,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 07:07:30,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5761 transitions. [2022-01-19 07:07:30,383 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7620370370370371 [2022-01-19 07:07:30,383 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5761 transitions. [2022-01-19 07:07:30,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5761 transitions. [2022-01-19 07:07:30,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:07:30,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5761 transitions. [2022-01-19 07:07:30,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.02777777777777) internal successors, (5761), 36 states have internal predecessors, (5761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:30,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:30,390 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:30,390 INFO L186 Difference]: Start difference. First operand has 699 places, 519 transitions, 9454 flow. Second operand 36 states and 5761 transitions. [2022-01-19 07:07:30,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 710 places, 662 transitions, 14094 flow [2022-01-19 07:07:30,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 685 places, 662 transitions, 13640 flow, removed 156 selfloop flow, removed 25 redundant places. [2022-01-19 07:07:30,879 INFO L242 Difference]: Finished difference. Result has 711 places, 542 transitions, 10482 flow [2022-01-19 07:07:30,880 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9229, PETRI_DIFFERENCE_MINUEND_PLACES=650, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=10482, PETRI_PLACES=711, PETRI_TRANSITIONS=542} [2022-01-19 07:07:30,880 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 524 predicate places. [2022-01-19 07:07:30,880 INFO L470 AbstractCegarLoop]: Abstraction has has 711 places, 542 transitions, 10482 flow [2022-01-19 07:07:30,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:30,880 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:07:30,880 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:07:30,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2022-01-19 07:07:30,880 INFO L402 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:07:30,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:07:30,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1980016676, now seen corresponding path program 150 times [2022-01-19 07:07:30,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:07:30,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279654115] [2022-01-19 07:07:30,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:07:30,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:07:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:07:30,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:07:30,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:07:30,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279654115] [2022-01-19 07:07:30,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279654115] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:07:30,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:07:30,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:07:30,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598725915] [2022-01-19 07:07:30,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:07:30,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:07:30,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:07:30,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:07:30,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:07:30,990 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:07:30,991 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 711 places, 542 transitions, 10482 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:30,991 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:07:30,991 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:07:30,991 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:07:32,482 INFO L129 PetriNetUnfolder]: 851/2884 cut-off events. [2022-01-19 07:07:32,482 INFO L130 PetriNetUnfolder]: For 102839/102852 co-relation queries the response was YES. [2022-01-19 07:07:32,541 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23495 conditions, 2884 events. 851/2884 cut-off events. For 102839/102852 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 22231 event pairs, 369 based on Foata normal form. 1/2794 useless extension candidates. Maximal degree in co-relation 23209. Up to 867 conditions per place. [2022-01-19 07:07:32,551 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 327 selfloop transitions, 136 changer transitions 64/668 dead transitions. [2022-01-19 07:07:32,552 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 726 places, 668 transitions, 14830 flow [2022-01-19 07:07:32,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:07:32,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:07:32,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6080 transitions. [2022-01-19 07:07:32,554 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2022-01-19 07:07:32,554 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6080 transitions. [2022-01-19 07:07:32,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6080 transitions. [2022-01-19 07:07:32,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:07:32,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6080 transitions. [2022-01-19 07:07:32,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.0) internal successors, (6080), 38 states have internal predecessors, (6080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:32,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:32,562 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:32,562 INFO L186 Difference]: Start difference. First operand has 711 places, 542 transitions, 10482 flow. Second operand 38 states and 6080 transitions. [2022-01-19 07:07:32,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 726 places, 668 transitions, 14830 flow [2022-01-19 07:07:33,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 706 places, 668 transitions, 14123 flow, removed 276 selfloop flow, removed 20 redundant places. [2022-01-19 07:07:33,124 INFO L242 Difference]: Finished difference. Result has 729 places, 551 transitions, 10739 flow [2022-01-19 07:07:33,124 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10136, PETRI_DIFFERENCE_MINUEND_PLACES=669, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=10739, PETRI_PLACES=729, PETRI_TRANSITIONS=551} [2022-01-19 07:07:33,125 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 542 predicate places. [2022-01-19 07:07:33,125 INFO L470 AbstractCegarLoop]: Abstraction has has 729 places, 551 transitions, 10739 flow [2022-01-19 07:07:33,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:33,125 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:07:33,125 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:07:33,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2022-01-19 07:07:33,125 INFO L402 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:07:33,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:07:33,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1143510414, now seen corresponding path program 151 times [2022-01-19 07:07:33,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:07:33,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032496086] [2022-01-19 07:07:33,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:07:33,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:07:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:07:33,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:07:33,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:07:33,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032496086] [2022-01-19 07:07:33,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032496086] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:07:33,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:07:33,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:07:33,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9905176] [2022-01-19 07:07:33,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:07:33,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:07:33,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:07:33,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:07:33,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:07:33,230 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:07:33,231 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 729 places, 551 transitions, 10739 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:33,231 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:07:33,231 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:07:33,231 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:07:34,654 INFO L129 PetriNetUnfolder]: 874/2944 cut-off events. [2022-01-19 07:07:34,654 INFO L130 PetriNetUnfolder]: For 110483/110496 co-relation queries the response was YES. [2022-01-19 07:07:34,709 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24495 conditions, 2944 events. 874/2944 cut-off events. For 110483/110496 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 22806 event pairs, 385 based on Foata normal form. 1/2851 useless extension candidates. Maximal degree in co-relation 24203. Up to 873 conditions per place. [2022-01-19 07:07:34,721 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 338 selfloop transitions, 144 changer transitions 64/687 dead transitions. [2022-01-19 07:07:34,721 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 741 places, 687 transitions, 15474 flow [2022-01-19 07:07:34,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 07:07:34,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 07:07:34,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5926 transitions. [2022-01-19 07:07:34,723 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7626769626769627 [2022-01-19 07:07:34,723 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5926 transitions. [2022-01-19 07:07:34,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5926 transitions. [2022-01-19 07:07:34,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:07:34,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5926 transitions. [2022-01-19 07:07:34,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.16216216216216) internal successors, (5926), 37 states have internal predecessors, (5926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:34,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:34,731 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:34,731 INFO L186 Difference]: Start difference. First operand has 729 places, 551 transitions, 10739 flow. Second operand 37 states and 5926 transitions. [2022-01-19 07:07:34,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 741 places, 687 transitions, 15474 flow [2022-01-19 07:07:35,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 720 places, 687 transitions, 14883 flow, removed 229 selfloop flow, removed 21 redundant places. [2022-01-19 07:07:35,283 INFO L242 Difference]: Finished difference. Result has 745 places, 570 transitions, 11430 flow [2022-01-19 07:07:35,283 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10456, PETRI_DIFFERENCE_MINUEND_PLACES=684, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=11430, PETRI_PLACES=745, PETRI_TRANSITIONS=570} [2022-01-19 07:07:35,283 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 558 predicate places. [2022-01-19 07:07:35,283 INFO L470 AbstractCegarLoop]: Abstraction has has 745 places, 570 transitions, 11430 flow [2022-01-19 07:07:35,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:35,284 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:07:35,284 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:07:35,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2022-01-19 07:07:35,284 INFO L402 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:07:35,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:07:35,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1315170484, now seen corresponding path program 152 times [2022-01-19 07:07:35,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:07:35,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048131997] [2022-01-19 07:07:35,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:07:35,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:07:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:07:35,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:07:35,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:07:35,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048131997] [2022-01-19 07:07:35,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048131997] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:07:35,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:07:35,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:07:35,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195901641] [2022-01-19 07:07:35,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:07:35,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:07:35,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:07:35,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:07:35,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:07:35,408 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:07:35,409 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 745 places, 570 transitions, 11430 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:35,409 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:07:35,409 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:07:35,409 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:07:36,861 INFO L129 PetriNetUnfolder]: 897/3010 cut-off events. [2022-01-19 07:07:36,862 INFO L130 PetriNetUnfolder]: For 120801/120814 co-relation queries the response was YES. [2022-01-19 07:07:36,940 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25722 conditions, 3010 events. 897/3010 cut-off events. For 120801/120814 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 23381 event pairs, 404 based on Foata normal form. 1/2916 useless extension candidates. Maximal degree in co-relation 25423. Up to 879 conditions per place. [2022-01-19 07:07:36,952 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 336 selfloop transitions, 162 changer transitions 64/703 dead transitions. [2022-01-19 07:07:36,953 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 758 places, 703 transitions, 16223 flow [2022-01-19 07:07:36,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 07:07:36,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 07:07:36,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5924 transitions. [2022-01-19 07:07:36,956 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7624195624195624 [2022-01-19 07:07:36,956 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5924 transitions. [2022-01-19 07:07:36,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5924 transitions. [2022-01-19 07:07:36,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:07:36,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5924 transitions. [2022-01-19 07:07:36,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.1081081081081) internal successors, (5924), 37 states have internal predecessors, (5924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:36,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:36,965 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:36,965 INFO L186 Difference]: Start difference. First operand has 745 places, 570 transitions, 11430 flow. Second operand 37 states and 5924 transitions. [2022-01-19 07:07:36,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 758 places, 703 transitions, 16223 flow [2022-01-19 07:07:37,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 737 places, 703 transitions, 15704 flow, removed 192 selfloop flow, removed 21 redundant places. [2022-01-19 07:07:37,598 INFO L242 Difference]: Finished difference. Result has 762 places, 587 transitions, 12150 flow [2022-01-19 07:07:37,598 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11162, PETRI_DIFFERENCE_MINUEND_PLACES=701, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=12150, PETRI_PLACES=762, PETRI_TRANSITIONS=587} [2022-01-19 07:07:37,598 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 575 predicate places. [2022-01-19 07:07:37,598 INFO L470 AbstractCegarLoop]: Abstraction has has 762 places, 587 transitions, 12150 flow [2022-01-19 07:07:37,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:37,599 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:07:37,599 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:07:37,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2022-01-19 07:07:37,599 INFO L402 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:07:37,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:07:37,599 INFO L85 PathProgramCache]: Analyzing trace with hash 404415070, now seen corresponding path program 153 times [2022-01-19 07:07:37,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:07:37,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315446470] [2022-01-19 07:07:37,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:07:37,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:07:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:07:37,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:07:37,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:07:37,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315446470] [2022-01-19 07:07:37,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315446470] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:07:37,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:07:37,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:07:37,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84705635] [2022-01-19 07:07:37,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:07:37,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:07:37,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:07:37,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:07:37,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:07:37,700 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:07:37,701 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 762 places, 587 transitions, 12150 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:37,701 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:07:37,701 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:07:37,701 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:07:39,165 INFO L129 PetriNetUnfolder]: 892/3014 cut-off events. [2022-01-19 07:07:39,165 INFO L130 PetriNetUnfolder]: For 123816/123829 co-relation queries the response was YES. [2022-01-19 07:07:39,226 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26051 conditions, 3014 events. 892/3014 cut-off events. For 123816/123829 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 23590 event pairs, 397 based on Foata normal form. 1/2920 useless extension candidates. Maximal degree in co-relation 25745. Up to 877 conditions per place. [2022-01-19 07:07:39,237 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 339 selfloop transitions, 164 changer transitions 64/708 dead transitions. [2022-01-19 07:07:39,238 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 776 places, 708 transitions, 16683 flow [2022-01-19 07:07:39,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:07:39,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:07:39,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6078 transitions. [2022-01-19 07:07:39,240 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616541353383459 [2022-01-19 07:07:39,240 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6078 transitions. [2022-01-19 07:07:39,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6078 transitions. [2022-01-19 07:07:39,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:07:39,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6078 transitions. [2022-01-19 07:07:39,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.94736842105263) internal successors, (6078), 38 states have internal predecessors, (6078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:39,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:39,248 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:39,248 INFO L186 Difference]: Start difference. First operand has 762 places, 587 transitions, 12150 flow. Second operand 38 states and 6078 transitions. [2022-01-19 07:07:39,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 776 places, 708 transitions, 16683 flow [2022-01-19 07:07:39,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 756 places, 708 transitions, 16097 flow, removed 213 selfloop flow, removed 20 redundant places. [2022-01-19 07:07:40,005 INFO L242 Difference]: Finished difference. Result has 780 places, 593 transitions, 12424 flow [2022-01-19 07:07:40,006 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11845, PETRI_DIFFERENCE_MINUEND_PLACES=719, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=12424, PETRI_PLACES=780, PETRI_TRANSITIONS=593} [2022-01-19 07:07:40,006 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 593 predicate places. [2022-01-19 07:07:40,006 INFO L470 AbstractCegarLoop]: Abstraction has has 780 places, 593 transitions, 12424 flow [2022-01-19 07:07:40,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:40,006 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:07:40,006 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:07:40,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2022-01-19 07:07:40,007 INFO L402 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:07:40,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:07:40,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1411516600, now seen corresponding path program 154 times [2022-01-19 07:07:40,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:07:40,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628875162] [2022-01-19 07:07:40,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:07:40,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:07:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:07:40,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:07:40,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:07:40,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628875162] [2022-01-19 07:07:40,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628875162] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:07:40,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:07:40,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:07:40,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161628487] [2022-01-19 07:07:40,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:07:40,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:07:40,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:07:40,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:07:40,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:07:40,129 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:07:40,129 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 780 places, 593 transitions, 12424 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:40,129 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:07:40,129 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:07:40,129 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:07:41,588 INFO L129 PetriNetUnfolder]: 882/2996 cut-off events. [2022-01-19 07:07:41,588 INFO L130 PetriNetUnfolder]: For 133663/133676 co-relation queries the response was YES. [2022-01-19 07:07:41,655 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25883 conditions, 2996 events. 882/2996 cut-off events. For 133663/133676 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 23509 event pairs, 392 based on Foata normal form. 1/2902 useless extension candidates. Maximal degree in co-relation 25570. Up to 875 conditions per place. [2022-01-19 07:07:41,667 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 368 selfloop transitions, 145 changer transitions 64/718 dead transitions. [2022-01-19 07:07:41,667 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 793 places, 718 transitions, 17179 flow [2022-01-19 07:07:41,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:07:41,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:07:41,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6086 transitions. [2022-01-19 07:07:41,669 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.76265664160401 [2022-01-19 07:07:41,669 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6086 transitions. [2022-01-19 07:07:41,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6086 transitions. [2022-01-19 07:07:41,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:07:41,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6086 transitions. [2022-01-19 07:07:41,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.1578947368421) internal successors, (6086), 38 states have internal predecessors, (6086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:41,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:41,677 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:41,677 INFO L186 Difference]: Start difference. First operand has 780 places, 593 transitions, 12424 flow. Second operand 38 states and 6086 transitions. [2022-01-19 07:07:41,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 793 places, 718 transitions, 17179 flow [2022-01-19 07:07:42,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 771 places, 718 transitions, 16576 flow, removed 210 selfloop flow, removed 22 redundant places. [2022-01-19 07:07:42,379 INFO L242 Difference]: Finished difference. Result has 795 places, 599 transitions, 12632 flow [2022-01-19 07:07:42,379 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12088, PETRI_DIFFERENCE_MINUEND_PLACES=734, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=12632, PETRI_PLACES=795, PETRI_TRANSITIONS=599} [2022-01-19 07:07:42,379 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 608 predicate places. [2022-01-19 07:07:42,379 INFO L470 AbstractCegarLoop]: Abstraction has has 795 places, 599 transitions, 12632 flow [2022-01-19 07:07:42,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:42,379 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:07:42,379 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:07:42,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2022-01-19 07:07:42,380 INFO L402 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:07:42,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:07:42,380 INFO L85 PathProgramCache]: Analyzing trace with hash 856655376, now seen corresponding path program 155 times [2022-01-19 07:07:42,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:07:42,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536893070] [2022-01-19 07:07:42,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:07:42,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:07:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:07:42,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:07:42,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:07:42,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536893070] [2022-01-19 07:07:42,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536893070] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:07:42,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:07:42,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:07:42,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137007186] [2022-01-19 07:07:42,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:07:42,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:07:42,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:07:42,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:07:42,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:07:42,491 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:07:42,491 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 795 places, 599 transitions, 12632 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:42,491 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:07:42,491 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:07:42,492 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:07:44,031 INFO L129 PetriNetUnfolder]: 906/3055 cut-off events. [2022-01-19 07:07:44,031 INFO L130 PetriNetUnfolder]: For 138103/138116 co-relation queries the response was YES. [2022-01-19 07:07:44,095 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27063 conditions, 3055 events. 906/3055 cut-off events. For 138103/138116 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 24001 event pairs, 408 based on Foata normal form. 1/2957 useless extension candidates. Maximal degree in co-relation 26745. Up to 889 conditions per place. [2022-01-19 07:07:44,107 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 382 selfloop transitions, 135 changer transitions 63/721 dead transitions. [2022-01-19 07:07:44,107 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 807 places, 721 transitions, 17603 flow [2022-01-19 07:07:44,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 07:07:44,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 07:07:44,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5927 transitions. [2022-01-19 07:07:44,110 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7628056628056628 [2022-01-19 07:07:44,110 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5927 transitions. [2022-01-19 07:07:44,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5927 transitions. [2022-01-19 07:07:44,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:07:44,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5927 transitions. [2022-01-19 07:07:44,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.1891891891892) internal successors, (5927), 37 states have internal predecessors, (5927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:44,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:44,117 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:44,117 INFO L186 Difference]: Start difference. First operand has 795 places, 599 transitions, 12632 flow. Second operand 37 states and 5927 transitions. [2022-01-19 07:07:44,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 807 places, 721 transitions, 17603 flow [2022-01-19 07:07:44,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 783 places, 721 transitions, 17023 flow, removed 212 selfloop flow, removed 24 redundant places. [2022-01-19 07:07:44,994 INFO L242 Difference]: Finished difference. Result has 808 places, 618 transitions, 13321 flow [2022-01-19 07:07:44,994 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12315, PETRI_DIFFERENCE_MINUEND_PLACES=747, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=13321, PETRI_PLACES=808, PETRI_TRANSITIONS=618} [2022-01-19 07:07:44,994 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 621 predicate places. [2022-01-19 07:07:44,994 INFO L470 AbstractCegarLoop]: Abstraction has has 808 places, 618 transitions, 13321 flow [2022-01-19 07:07:44,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:44,995 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:07:44,995 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:07:44,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2022-01-19 07:07:44,995 INFO L402 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:07:44,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:07:44,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1068205640, now seen corresponding path program 156 times [2022-01-19 07:07:44,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:07:44,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070944810] [2022-01-19 07:07:44,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:07:44,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:07:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:07:45,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:07:45,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:07:45,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070944810] [2022-01-19 07:07:45,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070944810] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:07:45,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:07:45,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:07:45,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265491161] [2022-01-19 07:07:45,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:07:45,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:07:45,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:07:45,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:07:45,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:07:45,098 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:07:45,099 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 808 places, 618 transitions, 13321 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:45,099 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:07:45,099 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:07:45,099 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:07:46,674 INFO L129 PetriNetUnfolder]: 939/3141 cut-off events. [2022-01-19 07:07:46,675 INFO L130 PetriNetUnfolder]: For 144552/144565 co-relation queries the response was YES. [2022-01-19 07:07:46,767 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28621 conditions, 3141 events. 939/3141 cut-off events. For 144552/144565 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 24791 event pairs, 443 based on Foata normal form. 1/3041 useless extension candidates. Maximal degree in co-relation 28299. Up to 900 conditions per place. [2022-01-19 07:07:46,780 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 285 selfloop transitions, 255 changer transitions 65/746 dead transitions. [2022-01-19 07:07:46,780 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 819 places, 746 transitions, 18554 flow [2022-01-19 07:07:46,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 07:07:46,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 07:07:46,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5605 transitions. [2022-01-19 07:07:46,784 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625850340136054 [2022-01-19 07:07:46,784 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5605 transitions. [2022-01-19 07:07:46,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5605 transitions. [2022-01-19 07:07:46,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:07:46,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5605 transitions. [2022-01-19 07:07:46,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 160.14285714285714) internal successors, (5605), 35 states have internal predecessors, (5605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:46,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:46,793 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:46,793 INFO L186 Difference]: Start difference. First operand has 808 places, 618 transitions, 13321 flow. Second operand 35 states and 5605 transitions. [2022-01-19 07:07:46,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 819 places, 746 transitions, 18554 flow [2022-01-19 07:07:47,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 798 places, 746 transitions, 17950 flow, removed 226 selfloop flow, removed 21 redundant places. [2022-01-19 07:07:47,713 INFO L242 Difference]: Finished difference. Result has 824 places, 637 transitions, 14324 flow [2022-01-19 07:07:47,713 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12977, PETRI_DIFFERENCE_MINUEND_PLACES=764, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=14324, PETRI_PLACES=824, PETRI_TRANSITIONS=637} [2022-01-19 07:07:47,714 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 637 predicate places. [2022-01-19 07:07:47,714 INFO L470 AbstractCegarLoop]: Abstraction has has 824 places, 637 transitions, 14324 flow [2022-01-19 07:07:47,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:47,714 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:07:47,714 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:07:47,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2022-01-19 07:07:47,714 INFO L402 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:07:47,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:07:47,714 INFO L85 PathProgramCache]: Analyzing trace with hash -116814954, now seen corresponding path program 157 times [2022-01-19 07:07:47,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:07:47,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983172310] [2022-01-19 07:07:47,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:07:47,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:07:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:07:47,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:07:47,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:07:47,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983172310] [2022-01-19 07:07:47,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983172310] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:07:47,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:07:47,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:07:47,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520792489] [2022-01-19 07:07:47,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:07:47,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:07:47,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:07:47,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:07:47,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:07:47,825 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:07:47,826 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 824 places, 637 transitions, 14324 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:47,826 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:07:47,826 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:07:47,826 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:07:49,462 INFO L129 PetriNetUnfolder]: 958/3200 cut-off events. [2022-01-19 07:07:49,463 INFO L130 PetriNetUnfolder]: For 161054/161067 co-relation queries the response was YES. [2022-01-19 07:07:49,540 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29887 conditions, 3200 events. 958/3200 cut-off events. For 161054/161067 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 25398 event pairs, 447 based on Foata normal form. 1/3102 useless extension candidates. Maximal degree in co-relation 29557. Up to 905 conditions per place. [2022-01-19 07:07:49,554 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 359 selfloop transitions, 193 changer transitions 61/754 dead transitions. [2022-01-19 07:07:49,554 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 840 places, 754 transitions, 19439 flow [2022-01-19 07:07:49,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:07:49,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:07:49,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6079 transitions. [2022-01-19 07:07:49,556 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7617794486215539 [2022-01-19 07:07:49,556 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6079 transitions. [2022-01-19 07:07:49,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6079 transitions. [2022-01-19 07:07:49,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:07:49,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6079 transitions. [2022-01-19 07:07:49,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.97368421052633) internal successors, (6079), 38 states have internal predecessors, (6079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:49,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:49,564 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:49,564 INFO L186 Difference]: Start difference. First operand has 824 places, 637 transitions, 14324 flow. Second operand 38 states and 6079 transitions. [2022-01-19 07:07:49,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 840 places, 754 transitions, 19439 flow [2022-01-19 07:07:50,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 818 places, 754 transitions, 18600 flow, removed 197 selfloop flow, removed 22 redundant places. [2022-01-19 07:07:50,579 INFO L242 Difference]: Finished difference. Result has 843 places, 652 transitions, 14774 flow [2022-01-19 07:07:50,579 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13760, PETRI_DIFFERENCE_MINUEND_PLACES=781, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=14774, PETRI_PLACES=843, PETRI_TRANSITIONS=652} [2022-01-19 07:07:50,579 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 656 predicate places. [2022-01-19 07:07:50,580 INFO L470 AbstractCegarLoop]: Abstraction has has 843 places, 652 transitions, 14774 flow [2022-01-19 07:07:50,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:50,580 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:07:50,580 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:07:50,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2022-01-19 07:07:50,580 INFO L402 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:07:50,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:07:50,580 INFO L85 PathProgramCache]: Analyzing trace with hash 83784014, now seen corresponding path program 158 times [2022-01-19 07:07:50,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:07:50,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790758635] [2022-01-19 07:07:50,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:07:50,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:07:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:07:50,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:07:50,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:07:50,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790758635] [2022-01-19 07:07:50,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790758635] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:07:50,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:07:50,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:07:50,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873390020] [2022-01-19 07:07:50,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:07:50,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:07:50,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:07:50,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:07:50,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:07:50,687 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:07:50,688 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 843 places, 652 transitions, 14774 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:50,688 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:07:50,688 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:07:50,688 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:07:52,355 INFO L129 PetriNetUnfolder]: 949/3187 cut-off events. [2022-01-19 07:07:52,355 INFO L130 PetriNetUnfolder]: For 173081/173094 co-relation queries the response was YES. [2022-01-19 07:07:52,437 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29703 conditions, 3187 events. 949/3187 cut-off events. For 173081/173094 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 25338 event pairs, 410 based on Foata normal form. 1/3089 useless extension candidates. Maximal degree in co-relation 29365. Up to 899 conditions per place. [2022-01-19 07:07:52,450 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 412 selfloop transitions, 149 changer transitions 62/764 dead transitions. [2022-01-19 07:07:52,450 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 856 places, 764 transitions, 19831 flow [2022-01-19 07:07:52,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:07:52,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:07:52,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6087 transitions. [2022-01-19 07:07:52,452 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.762781954887218 [2022-01-19 07:07:52,453 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6087 transitions. [2022-01-19 07:07:52,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6087 transitions. [2022-01-19 07:07:52,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:07:52,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6087 transitions. [2022-01-19 07:07:52,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.18421052631578) internal successors, (6087), 38 states have internal predecessors, (6087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:52,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:52,460 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:52,460 INFO L186 Difference]: Start difference. First operand has 843 places, 652 transitions, 14774 flow. Second operand 38 states and 6087 transitions. [2022-01-19 07:07:52,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 856 places, 764 transitions, 19831 flow [2022-01-19 07:07:53,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 835 places, 764 transitions, 19193 flow, removed 208 selfloop flow, removed 21 redundant places. [2022-01-19 07:07:53,632 INFO L242 Difference]: Finished difference. Result has 858 places, 660 transitions, 15019 flow [2022-01-19 07:07:53,632 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14382, PETRI_DIFFERENCE_MINUEND_PLACES=798, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=15019, PETRI_PLACES=858, PETRI_TRANSITIONS=660} [2022-01-19 07:07:53,633 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 671 predicate places. [2022-01-19 07:07:53,633 INFO L470 AbstractCegarLoop]: Abstraction has has 858 places, 660 transitions, 15019 flow [2022-01-19 07:07:53,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:53,633 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:07:53,633 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:07:53,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2022-01-19 07:07:53,633 INFO L402 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:07:53,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:07:53,633 INFO L85 PathProgramCache]: Analyzing trace with hash 948920408, now seen corresponding path program 159 times [2022-01-19 07:07:53,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:07:53,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269069435] [2022-01-19 07:07:53,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:07:53,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:07:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:07:53,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:07:53,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:07:53,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269069435] [2022-01-19 07:07:53,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269069435] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:07:53,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:07:53,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:07:53,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129966719] [2022-01-19 07:07:53,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:07:53,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:07:53,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:07:53,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:07:53,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:07:53,732 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:07:53,733 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 858 places, 660 transitions, 15019 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:53,733 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:07:53,733 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:07:53,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:07:55,429 INFO L129 PetriNetUnfolder]: 980/3268 cut-off events. [2022-01-19 07:07:55,429 INFO L130 PetriNetUnfolder]: For 182050/182063 co-relation queries the response was YES. [2022-01-19 07:07:55,527 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31303 conditions, 3268 events. 980/3268 cut-off events. For 182050/182063 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 26151 event pairs, 456 based on Foata normal form. 1/3166 useless extension candidates. Maximal degree in co-relation 30960. Up to 909 conditions per place. [2022-01-19 07:07:55,541 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 380 selfloop transitions, 198 changer transitions 62/781 dead transitions. [2022-01-19 07:07:55,541 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 869 places, 781 transitions, 20551 flow [2022-01-19 07:07:55,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 07:07:55,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 07:07:55,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5770 transitions. [2022-01-19 07:07:55,544 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7632275132275133 [2022-01-19 07:07:55,544 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5770 transitions. [2022-01-19 07:07:55,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5770 transitions. [2022-01-19 07:07:55,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:07:55,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5770 transitions. [2022-01-19 07:07:55,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.27777777777777) internal successors, (5770), 36 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:55,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:55,551 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:55,551 INFO L186 Difference]: Start difference. First operand has 858 places, 660 transitions, 15019 flow. Second operand 36 states and 5770 transitions. [2022-01-19 07:07:55,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 869 places, 781 transitions, 20551 flow [2022-01-19 07:07:56,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 848 places, 781 transitions, 19997 flow, removed 194 selfloop flow, removed 21 redundant places. [2022-01-19 07:07:56,703 INFO L242 Difference]: Finished difference. Result has 874 places, 681 transitions, 16024 flow [2022-01-19 07:07:56,703 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14702, PETRI_DIFFERENCE_MINUEND_PLACES=813, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=16024, PETRI_PLACES=874, PETRI_TRANSITIONS=681} [2022-01-19 07:07:56,704 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 687 predicate places. [2022-01-19 07:07:56,704 INFO L470 AbstractCegarLoop]: Abstraction has has 874 places, 681 transitions, 16024 flow [2022-01-19 07:07:56,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:56,704 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:07:56,704 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:07:56,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2022-01-19 07:07:56,704 INFO L402 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:07:56,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:07:56,704 INFO L85 PathProgramCache]: Analyzing trace with hash -2086298424, now seen corresponding path program 160 times [2022-01-19 07:07:56,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:07:56,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889548112] [2022-01-19 07:07:56,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:07:56,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:07:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:07:56,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:07:56,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:07:56,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889548112] [2022-01-19 07:07:56,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889548112] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:07:56,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:07:56,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:07:56,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324017085] [2022-01-19 07:07:56,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:07:56,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:07:56,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:07:56,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:07:56,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:07:56,808 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:07:56,808 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 874 places, 681 transitions, 16024 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:56,808 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:07:56,809 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:07:56,809 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:07:58,567 INFO L129 PetriNetUnfolder]: 1005/3333 cut-off events. [2022-01-19 07:07:58,568 INFO L130 PetriNetUnfolder]: For 212971/212984 co-relation queries the response was YES. [2022-01-19 07:07:58,657 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32640 conditions, 3333 events. 1005/3333 cut-off events. For 212971/212984 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 26796 event pairs, 461 based on Foata normal form. 1/3232 useless extension candidates. Maximal degree in co-relation 32289. Up to 911 conditions per place. [2022-01-19 07:07:58,673 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 431 selfloop transitions, 168 changer transitions 63/803 dead transitions. [2022-01-19 07:07:58,673 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 887 places, 803 transitions, 21665 flow [2022-01-19 07:07:58,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 07:07:58,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 07:07:58,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5772 transitions. [2022-01-19 07:07:58,675 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7634920634920634 [2022-01-19 07:07:58,675 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5772 transitions. [2022-01-19 07:07:58,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5772 transitions. [2022-01-19 07:07:58,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:07:58,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5772 transitions. [2022-01-19 07:07:58,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.33333333333334) internal successors, (5772), 36 states have internal predecessors, (5772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:58,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:58,682 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:58,682 INFO L186 Difference]: Start difference. First operand has 874 places, 681 transitions, 16024 flow. Second operand 36 states and 5772 transitions. [2022-01-19 07:07:58,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 887 places, 803 transitions, 21665 flow [2022-01-19 07:07:59,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 866 places, 803 transitions, 20978 flow, removed 225 selfloop flow, removed 21 redundant places. [2022-01-19 07:07:59,946 INFO L242 Difference]: Finished difference. Result has 892 places, 701 transitions, 16838 flow [2022-01-19 07:07:59,946 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15571, PETRI_DIFFERENCE_MINUEND_PLACES=831, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=16838, PETRI_PLACES=892, PETRI_TRANSITIONS=701} [2022-01-19 07:07:59,946 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 705 predicate places. [2022-01-19 07:07:59,946 INFO L470 AbstractCegarLoop]: Abstraction has has 892 places, 701 transitions, 16838 flow [2022-01-19 07:07:59,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:07:59,947 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:07:59,947 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:07:59,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2022-01-19 07:07:59,947 INFO L402 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:07:59,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:07:59,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1018448108, now seen corresponding path program 161 times [2022-01-19 07:07:59,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:07:59,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482742767] [2022-01-19 07:07:59,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:07:59,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:07:59,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:08:00,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:08:00,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:08:00,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482742767] [2022-01-19 07:08:00,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482742767] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:08:00,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:08:00,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:08:00,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497910050] [2022-01-19 07:08:00,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:08:00,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:08:00,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:08:00,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:08:00,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:08:00,055 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:08:00,056 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 892 places, 701 transitions, 16838 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:00,056 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:08:00,056 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:08:00,056 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:08:02,008 INFO L129 PetriNetUnfolder]: 1024/3401 cut-off events. [2022-01-19 07:08:02,008 INFO L130 PetriNetUnfolder]: For 231266/231279 co-relation queries the response was YES. [2022-01-19 07:08:02,100 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33946 conditions, 3401 events. 1024/3401 cut-off events. For 231266/231279 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 27503 event pairs, 452 based on Foata normal form. 1/3300 useless extension candidates. Maximal degree in co-relation 33587. Up to 917 conditions per place. [2022-01-19 07:08:02,115 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 452 selfloop transitions, 165 changer transitions 61/819 dead transitions. [2022-01-19 07:08:02,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 907 places, 819 transitions, 22685 flow [2022-01-19 07:08:02,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:08:02,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:08:02,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6089 transitions. [2022-01-19 07:08:02,118 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7630325814536341 [2022-01-19 07:08:02,118 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6089 transitions. [2022-01-19 07:08:02,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6089 transitions. [2022-01-19 07:08:02,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:08:02,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6089 transitions. [2022-01-19 07:08:02,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.23684210526315) internal successors, (6089), 38 states have internal predecessors, (6089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:02,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:02,126 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:02,126 INFO L186 Difference]: Start difference. First operand has 892 places, 701 transitions, 16838 flow. Second operand 38 states and 6089 transitions. [2022-01-19 07:08:02,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 907 places, 819 transitions, 22685 flow [2022-01-19 07:08:03,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 887 places, 819 transitions, 21941 flow, removed 291 selfloop flow, removed 20 redundant places. [2022-01-19 07:08:03,663 INFO L242 Difference]: Finished difference. Result has 910 places, 717 transitions, 17487 flow [2022-01-19 07:08:03,663 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16454, PETRI_DIFFERENCE_MINUEND_PLACES=850, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=17487, PETRI_PLACES=910, PETRI_TRANSITIONS=717} [2022-01-19 07:08:03,664 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 723 predicate places. [2022-01-19 07:08:03,664 INFO L470 AbstractCegarLoop]: Abstraction has has 910 places, 717 transitions, 17487 flow [2022-01-19 07:08:03,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:03,664 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:08:03,664 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:08:03,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2022-01-19 07:08:03,664 INFO L402 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:08:03,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:08:03,665 INFO L85 PathProgramCache]: Analyzing trace with hash -2128100980, now seen corresponding path program 162 times [2022-01-19 07:08:03,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:08:03,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230719392] [2022-01-19 07:08:03,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:08:03,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:08:03,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:08:03,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:08:03,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:08:03,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230719392] [2022-01-19 07:08:03,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230719392] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:08:03,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:08:03,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:08:03,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250026615] [2022-01-19 07:08:03,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:08:03,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:08:03,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:08:03,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:08:03,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:08:03,769 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:08:03,769 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 910 places, 717 transitions, 17487 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:03,769 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:08:03,769 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:08:03,770 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:08:05,658 INFO L129 PetriNetUnfolder]: 1018/3394 cut-off events. [2022-01-19 07:08:05,658 INFO L130 PetriNetUnfolder]: For 227263/227276 co-relation queries the response was YES. [2022-01-19 07:08:05,749 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33814 conditions, 3394 events. 1018/3394 cut-off events. For 227263/227276 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 27546 event pairs, 455 based on Foata normal form. 1/3292 useless extension candidates. Maximal degree in co-relation 33449. Up to 921 conditions per place. [2022-01-19 07:08:05,764 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 415 selfloop transitions, 206 changer transitions 62/824 dead transitions. [2022-01-19 07:08:05,764 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 922 places, 824 transitions, 22819 flow [2022-01-19 07:08:05,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 07:08:05,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 07:08:05,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5925 transitions. [2022-01-19 07:08:05,767 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625482625482626 [2022-01-19 07:08:05,767 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5925 transitions. [2022-01-19 07:08:05,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5925 transitions. [2022-01-19 07:08:05,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:08:05,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5925 transitions. [2022-01-19 07:08:05,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.13513513513513) internal successors, (5925), 37 states have internal predecessors, (5925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:05,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:05,774 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:05,774 INFO L186 Difference]: Start difference. First operand has 910 places, 717 transitions, 17487 flow. Second operand 37 states and 5925 transitions. [2022-01-19 07:08:05,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 922 places, 824 transitions, 22819 flow [2022-01-19 07:08:07,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 904 places, 824 transitions, 22286 flow, removed 206 selfloop flow, removed 18 redundant places. [2022-01-19 07:08:07,150 INFO L242 Difference]: Finished difference. Result has 928 places, 726 transitions, 18005 flow [2022-01-19 07:08:07,150 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17171, PETRI_DIFFERENCE_MINUEND_PLACES=868, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=717, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=18005, PETRI_PLACES=928, PETRI_TRANSITIONS=726} [2022-01-19 07:08:07,151 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 741 predicate places. [2022-01-19 07:08:07,151 INFO L470 AbstractCegarLoop]: Abstraction has has 928 places, 726 transitions, 18005 flow [2022-01-19 07:08:07,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:07,151 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:08:07,151 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:08:07,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2022-01-19 07:08:07,151 INFO L402 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:08:07,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:08:07,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1347111622, now seen corresponding path program 163 times [2022-01-19 07:08:07,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:08:07,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637015825] [2022-01-19 07:08:07,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:08:07,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:08:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:08:07,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:08:07,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:08:07,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637015825] [2022-01-19 07:08:07,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637015825] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:08:07,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:08:07,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:08:07,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224616465] [2022-01-19 07:08:07,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:08:07,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:08:07,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:08:07,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:08:07,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:08:07,271 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:08:07,272 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 928 places, 726 transitions, 18005 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:07,272 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:08:07,272 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:08:07,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:08:09,096 INFO L129 PetriNetUnfolder]: 1014/3386 cut-off events. [2022-01-19 07:08:09,096 INFO L130 PetriNetUnfolder]: For 238932/238945 co-relation queries the response was YES. [2022-01-19 07:08:09,200 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33626 conditions, 3386 events. 1014/3386 cut-off events. For 238932/238945 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 27434 event pairs, 448 based on Foata normal form. 1/3284 useless extension candidates. Maximal degree in co-relation 33253. Up to 913 conditions per place. [2022-01-19 07:08:09,216 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 468 selfloop transitions, 165 changer transitions 62/836 dead transitions. [2022-01-19 07:08:09,216 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 941 places, 836 transitions, 23627 flow [2022-01-19 07:08:09,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 07:08:09,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 07:08:09,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5935 transitions. [2022-01-19 07:08:09,218 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7638352638352638 [2022-01-19 07:08:09,218 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5935 transitions. [2022-01-19 07:08:09,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5935 transitions. [2022-01-19 07:08:09,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:08:09,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5935 transitions. [2022-01-19 07:08:09,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.40540540540542) internal successors, (5935), 37 states have internal predecessors, (5935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:09,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:09,225 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:09,225 INFO L186 Difference]: Start difference. First operand has 928 places, 726 transitions, 18005 flow. Second operand 37 states and 5935 transitions. [2022-01-19 07:08:09,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 941 places, 836 transitions, 23627 flow [2022-01-19 07:08:10,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 921 places, 836 transitions, 22923 flow, removed 228 selfloop flow, removed 20 redundant places. [2022-01-19 07:08:10,717 INFO L242 Difference]: Finished difference. Result has 945 places, 734 transitions, 18256 flow [2022-01-19 07:08:10,717 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17543, PETRI_DIFFERENCE_MINUEND_PLACES=885, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=18256, PETRI_PLACES=945, PETRI_TRANSITIONS=734} [2022-01-19 07:08:10,718 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 758 predicate places. [2022-01-19 07:08:10,718 INFO L470 AbstractCegarLoop]: Abstraction has has 945 places, 734 transitions, 18256 flow [2022-01-19 07:08:10,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:10,718 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:08:10,718 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:08:10,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2022-01-19 07:08:10,718 INFO L402 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:08:10,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:08:10,718 INFO L85 PathProgramCache]: Analyzing trace with hash -229903456, now seen corresponding path program 164 times [2022-01-19 07:08:10,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:08:10,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32166649] [2022-01-19 07:08:10,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:08:10,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:08:10,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:08:10,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:08:10,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:08:10,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32166649] [2022-01-19 07:08:10,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32166649] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:08:10,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:08:10,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:08:10,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211136693] [2022-01-19 07:08:10,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:08:10,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:08:10,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:08:10,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:08:10,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:08:10,820 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:08:10,820 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 945 places, 734 transitions, 18256 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:10,820 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:08:10,820 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:08:10,821 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:08:12,753 INFO L129 PetriNetUnfolder]: 1002/3377 cut-off events. [2022-01-19 07:08:12,753 INFO L130 PetriNetUnfolder]: For 240387/240400 co-relation queries the response was YES. [2022-01-19 07:08:12,827 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33093 conditions, 3377 events. 1002/3377 cut-off events. For 240387/240400 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 27542 event pairs, 403 based on Foata normal form. 1/3277 useless extension candidates. Maximal degree in co-relation 32713. Up to 911 conditions per place. [2022-01-19 07:08:12,840 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 453 selfloop transitions, 182 changer transitions 63/839 dead transitions. [2022-01-19 07:08:12,840 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 959 places, 839 transitions, 23684 flow [2022-01-19 07:08:12,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:08:12,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:08:12,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6081 transitions. [2022-01-19 07:08:12,843 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.76203007518797 [2022-01-19 07:08:12,843 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6081 transitions. [2022-01-19 07:08:12,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6081 transitions. [2022-01-19 07:08:12,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:08:12,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6081 transitions. [2022-01-19 07:08:12,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.02631578947367) internal successors, (6081), 38 states have internal predecessors, (6081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:12,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:12,850 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:12,850 INFO L186 Difference]: Start difference. First operand has 945 places, 734 transitions, 18256 flow. Second operand 38 states and 6081 transitions. [2022-01-19 07:08:12,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 959 places, 839 transitions, 23684 flow [2022-01-19 07:08:14,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 937 places, 839 transitions, 23048 flow, removed 219 selfloop flow, removed 22 redundant places. [2022-01-19 07:08:14,461 INFO L242 Difference]: Finished difference. Result has 959 places, 740 transitions, 18478 flow [2022-01-19 07:08:14,461 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17848, PETRI_DIFFERENCE_MINUEND_PLACES=900, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=554, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=18478, PETRI_PLACES=959, PETRI_TRANSITIONS=740} [2022-01-19 07:08:14,461 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 772 predicate places. [2022-01-19 07:08:14,461 INFO L470 AbstractCegarLoop]: Abstraction has has 959 places, 740 transitions, 18478 flow [2022-01-19 07:08:14,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:14,462 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:08:14,462 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:08:14,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2022-01-19 07:08:14,462 INFO L402 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:08:14,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:08:14,462 INFO L85 PathProgramCache]: Analyzing trace with hash -79783928, now seen corresponding path program 165 times [2022-01-19 07:08:14,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:08:14,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968996170] [2022-01-19 07:08:14,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:08:14,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:08:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:08:14,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:08:14,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:08:14,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968996170] [2022-01-19 07:08:14,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968996170] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:08:14,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:08:14,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:08:14,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623978346] [2022-01-19 07:08:14,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:08:14,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:08:14,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:08:14,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:08:14,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:08:14,573 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:08:14,574 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 959 places, 740 transitions, 18478 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:14,574 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:08:14,574 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:08:14,574 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:08:16,320 INFO L129 PetriNetUnfolder]: 963/3264 cut-off events. [2022-01-19 07:08:16,320 INFO L130 PetriNetUnfolder]: For 241680/241693 co-relation queries the response was YES. [2022-01-19 07:08:16,409 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31440 conditions, 3264 events. 963/3264 cut-off events. For 241680/241693 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 26462 event pairs, 324 based on Foata normal form. 1/3178 useless extension candidates. Maximal degree in co-relation 31057. Up to 898 conditions per place. [2022-01-19 07:08:16,424 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 409 selfloop transitions, 206 changer transitions 65/821 dead transitions. [2022-01-19 07:08:16,424 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 964 places, 821 transitions, 21383 flow [2022-01-19 07:08:16,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:08:16,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:08:16,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4797 transitions. [2022-01-19 07:08:16,426 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7614285714285715 [2022-01-19 07:08:16,426 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4797 transitions. [2022-01-19 07:08:16,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4797 transitions. [2022-01-19 07:08:16,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:08:16,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4797 transitions. [2022-01-19 07:08:16,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.9) internal successors, (4797), 30 states have internal predecessors, (4797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:16,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:16,433 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:16,433 INFO L186 Difference]: Start difference. First operand has 959 places, 740 transitions, 18478 flow. Second operand 30 states and 4797 transitions. [2022-01-19 07:08:16,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 964 places, 821 transitions, 21383 flow [2022-01-19 07:08:17,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 940 places, 821 transitions, 20870 flow, removed 170 selfloop flow, removed 24 redundant places. [2022-01-19 07:08:17,968 INFO L242 Difference]: Finished difference. Result has 951 places, 701 transitions, 17365 flow [2022-01-19 07:08:17,968 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18079, PETRI_DIFFERENCE_MINUEND_PLACES=911, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17365, PETRI_PLACES=951, PETRI_TRANSITIONS=701} [2022-01-19 07:08:17,968 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 764 predicate places. [2022-01-19 07:08:17,969 INFO L470 AbstractCegarLoop]: Abstraction has has 951 places, 701 transitions, 17365 flow [2022-01-19 07:08:17,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:17,969 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:08:17,969 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:08:17,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2022-01-19 07:08:17,969 INFO L402 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:08:17,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:08:17,969 INFO L85 PathProgramCache]: Analyzing trace with hash -632030626, now seen corresponding path program 166 times [2022-01-19 07:08:17,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:08:17,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049585854] [2022-01-19 07:08:17,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:08:17,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:08:17,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:08:18,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:08:18,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:08:18,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049585854] [2022-01-19 07:08:18,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049585854] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:08:18,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:08:18,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:08:18,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679647662] [2022-01-19 07:08:18,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:08:18,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:08:18,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:08:18,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:08:18,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:08:18,065 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:08:18,076 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 951 places, 701 transitions, 17365 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:18,076 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:08:18,076 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:08:18,076 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:08:19,744 INFO L129 PetriNetUnfolder]: 958/3249 cut-off events. [2022-01-19 07:08:19,745 INFO L130 PetriNetUnfolder]: For 237398/237411 co-relation queries the response was YES. [2022-01-19 07:08:19,844 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31273 conditions, 3249 events. 958/3249 cut-off events. For 237398/237411 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 26252 event pairs, 374 based on Foata normal form. 1/3153 useless extension candidates. Maximal degree in co-relation 30900. Up to 896 conditions per place. [2022-01-19 07:08:19,858 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 436 selfloop transitions, 182 changer transitions 57/816 dead transitions. [2022-01-19 07:08:19,858 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 933 places, 816 transitions, 21868 flow [2022-01-19 07:08:19,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:08:19,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:08:19,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4817 transitions. [2022-01-19 07:08:19,860 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646031746031746 [2022-01-19 07:08:19,861 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4817 transitions. [2022-01-19 07:08:19,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4817 transitions. [2022-01-19 07:08:19,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:08:19,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4817 transitions. [2022-01-19 07:08:19,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.56666666666666) internal successors, (4817), 30 states have internal predecessors, (4817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:19,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:19,867 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:19,867 INFO L186 Difference]: Start difference. First operand has 951 places, 701 transitions, 17365 flow. Second operand 30 states and 4817 transitions. [2022-01-19 07:08:19,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 933 places, 816 transitions, 21868 flow [2022-01-19 07:08:21,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 887 places, 816 transitions, 20009 flow, removed 141 selfloop flow, removed 46 redundant places. [2022-01-19 07:08:21,234 INFO L242 Difference]: Finished difference. Result has 902 places, 710 transitions, 16650 flow [2022-01-19 07:08:21,234 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15863, PETRI_DIFFERENCE_MINUEND_PLACES=858, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=16650, PETRI_PLACES=902, PETRI_TRANSITIONS=710} [2022-01-19 07:08:21,235 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 715 predicate places. [2022-01-19 07:08:21,235 INFO L470 AbstractCegarLoop]: Abstraction has has 902 places, 710 transitions, 16650 flow [2022-01-19 07:08:21,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:21,235 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:08:21,235 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:08:21,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2022-01-19 07:08:21,235 INFO L402 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:08:21,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:08:21,235 INFO L85 PathProgramCache]: Analyzing trace with hash 2117682024, now seen corresponding path program 167 times [2022-01-19 07:08:21,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:08:21,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092379685] [2022-01-19 07:08:21,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:08:21,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:08:21,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:08:21,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:08:21,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:08:21,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092379685] [2022-01-19 07:08:21,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092379685] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:08:21,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:08:21,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:08:21,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851571173] [2022-01-19 07:08:21,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:08:21,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:08:21,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:08:21,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:08:21,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:08:21,338 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:08:21,339 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 902 places, 710 transitions, 16650 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:21,339 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:08:21,339 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:08:21,339 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:08:23,028 INFO L129 PetriNetUnfolder]: 933/3173 cut-off events. [2022-01-19 07:08:23,028 INFO L130 PetriNetUnfolder]: For 218900/218913 co-relation queries the response was YES. [2022-01-19 07:08:23,098 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29244 conditions, 3173 events. 933/3173 cut-off events. For 218900/218913 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 25465 event pairs, 371 based on Foata normal form. 1/3078 useless extension candidates. Maximal degree in co-relation 28887. Up to 889 conditions per place. [2022-01-19 07:08:23,112 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 430 selfloop transitions, 156 changer transitions 63/790 dead transitions. [2022-01-19 07:08:23,112 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 916 places, 790 transitions, 19903 flow [2022-01-19 07:08:23,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:08:23,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:08:23,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4805 transitions. [2022-01-19 07:08:23,115 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7626984126984127 [2022-01-19 07:08:23,115 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4805 transitions. [2022-01-19 07:08:23,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4805 transitions. [2022-01-19 07:08:23,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:08:23,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4805 transitions. [2022-01-19 07:08:23,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.16666666666666) internal successors, (4805), 30 states have internal predecessors, (4805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:23,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:23,121 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:23,121 INFO L186 Difference]: Start difference. First operand has 902 places, 710 transitions, 16650 flow. Second operand 30 states and 4805 transitions. [2022-01-19 07:08:23,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 916 places, 790 transitions, 19903 flow [2022-01-19 07:08:24,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 902 places, 790 transitions, 19313 flow, removed 227 selfloop flow, removed 14 redundant places. [2022-01-19 07:08:24,326 INFO L242 Difference]: Finished difference. Result has 913 places, 679 transitions, 15697 flow [2022-01-19 07:08:24,326 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16216, PETRI_DIFFERENCE_MINUEND_PLACES=873, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=554, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=15697, PETRI_PLACES=913, PETRI_TRANSITIONS=679} [2022-01-19 07:08:24,327 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 726 predicate places. [2022-01-19 07:08:24,327 INFO L470 AbstractCegarLoop]: Abstraction has has 913 places, 679 transitions, 15697 flow [2022-01-19 07:08:24,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:24,327 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:08:24,327 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:08:24,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2022-01-19 07:08:24,327 INFO L402 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:08:24,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:08:24,327 INFO L85 PathProgramCache]: Analyzing trace with hash -743667636, now seen corresponding path program 168 times [2022-01-19 07:08:24,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:08:24,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092990013] [2022-01-19 07:08:24,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:08:24,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:08:24,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:08:24,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:08:24,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:08:24,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092990013] [2022-01-19 07:08:24,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092990013] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:08:24,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:08:24,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:08:24,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287917782] [2022-01-19 07:08:24,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:08:24,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:08:24,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:08:24,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:08:24,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:08:24,422 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:08:24,423 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 913 places, 679 transitions, 15697 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:24,423 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:08:24,423 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:08:24,423 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:08:26,020 INFO L129 PetriNetUnfolder]: 937/3214 cut-off events. [2022-01-19 07:08:26,020 INFO L130 PetriNetUnfolder]: For 205034/205047 co-relation queries the response was YES. [2022-01-19 07:08:26,110 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29114 conditions, 3214 events. 937/3214 cut-off events. For 205034/205047 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 25909 event pairs, 367 based on Foata normal form. 1/3119 useless extension candidates. Maximal degree in co-relation 28757. Up to 889 conditions per place. [2022-01-19 07:08:26,124 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 418 selfloop transitions, 170 changer transitions 71/800 dead transitions. [2022-01-19 07:08:26,124 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 905 places, 800 transitions, 19863 flow [2022-01-19 07:08:26,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-19 07:08:26,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-01-19 07:08:26,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5442 transitions. [2022-01-19 07:08:26,127 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7621848739495798 [2022-01-19 07:08:26,127 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5442 transitions. [2022-01-19 07:08:26,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5442 transitions. [2022-01-19 07:08:26,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:08:26,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5442 transitions. [2022-01-19 07:08:26,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 160.05882352941177) internal successors, (5442), 34 states have internal predecessors, (5442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:26,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:26,133 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:26,134 INFO L186 Difference]: Start difference. First operand has 913 places, 679 transitions, 15697 flow. Second operand 34 states and 5442 transitions. [2022-01-19 07:08:26,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 905 places, 800 transitions, 19863 flow [2022-01-19 07:08:27,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 869 places, 800 transitions, 18730 flow, removed 127 selfloop flow, removed 36 redundant places. [2022-01-19 07:08:27,387 INFO L242 Difference]: Finished difference. Result has 889 places, 682 transitions, 15466 flow [2022-01-19 07:08:27,387 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14854, PETRI_DIFFERENCE_MINUEND_PLACES=836, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=15466, PETRI_PLACES=889, PETRI_TRANSITIONS=682} [2022-01-19 07:08:27,388 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 702 predicate places. [2022-01-19 07:08:27,388 INFO L470 AbstractCegarLoop]: Abstraction has has 889 places, 682 transitions, 15466 flow [2022-01-19 07:08:27,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:27,388 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:08:27,388 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:08:27,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2022-01-19 07:08:27,388 INFO L402 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:08:27,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:08:27,388 INFO L85 PathProgramCache]: Analyzing trace with hash -472356196, now seen corresponding path program 169 times [2022-01-19 07:08:27,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:08:27,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585882052] [2022-01-19 07:08:27,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:08:27,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:08:27,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:08:27,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:08:27,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:08:27,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585882052] [2022-01-19 07:08:27,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585882052] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:08:27,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:08:27,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:08:27,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931425336] [2022-01-19 07:08:27,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:08:27,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:08:27,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:08:27,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:08:27,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:08:27,507 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:08:27,508 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 889 places, 682 transitions, 15466 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:27,508 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:08:27,508 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:08:27,508 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:08:29,062 INFO L129 PetriNetUnfolder]: 940/3211 cut-off events. [2022-01-19 07:08:29,062 INFO L130 PetriNetUnfolder]: For 199017/199030 co-relation queries the response was YES. [2022-01-19 07:08:29,157 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28329 conditions, 3211 events. 940/3211 cut-off events. For 199017/199030 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 25870 event pairs, 365 based on Foata normal form. 1/3114 useless extension candidates. Maximal degree in co-relation 27975. Up to 889 conditions per place. [2022-01-19 07:08:29,172 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 422 selfloop transitions, 176 changer transitions 58/797 dead transitions. [2022-01-19 07:08:29,172 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 897 places, 797 transitions, 19429 flow [2022-01-19 07:08:29,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:08:29,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:08:29,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4660 transitions. [2022-01-19 07:08:29,175 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7651888341543513 [2022-01-19 07:08:29,175 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4660 transitions. [2022-01-19 07:08:29,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4660 transitions. [2022-01-19 07:08:29,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:08:29,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4660 transitions. [2022-01-19 07:08:29,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.68965517241378) internal successors, (4660), 29 states have internal predecessors, (4660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:29,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:29,183 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:29,183 INFO L186 Difference]: Start difference. First operand has 889 places, 682 transitions, 15466 flow. Second operand 29 states and 4660 transitions. [2022-01-19 07:08:29,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 897 places, 797 transitions, 19429 flow [2022-01-19 07:08:30,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 869 places, 797 transitions, 18454 flow, removed 274 selfloop flow, removed 28 redundant places. [2022-01-19 07:08:30,414 INFO L242 Difference]: Finished difference. Result has 883 places, 694 transitions, 15579 flow [2022-01-19 07:08:30,415 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14882, PETRI_DIFFERENCE_MINUEND_PLACES=841, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=682, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=15579, PETRI_PLACES=883, PETRI_TRANSITIONS=694} [2022-01-19 07:08:30,415 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 696 predicate places. [2022-01-19 07:08:30,415 INFO L470 AbstractCegarLoop]: Abstraction has has 883 places, 694 transitions, 15579 flow [2022-01-19 07:08:30,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:30,415 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:08:30,415 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:08:30,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2022-01-19 07:08:30,415 INFO L402 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:08:30,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:08:30,416 INFO L85 PathProgramCache]: Analyzing trace with hash -686172648, now seen corresponding path program 170 times [2022-01-19 07:08:30,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:08:30,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548959103] [2022-01-19 07:08:30,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:08:30,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:08:30,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:08:30,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:08:30,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:08:30,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548959103] [2022-01-19 07:08:30,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548959103] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:08:30,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:08:30,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:08:30,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589881402] [2022-01-19 07:08:30,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:08:30,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:08:30,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:08:30,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:08:30,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:08:30,508 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:08:30,509 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 883 places, 694 transitions, 15579 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:30,509 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:08:30,509 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:08:30,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:08:32,078 INFO L129 PetriNetUnfolder]: 941/3216 cut-off events. [2022-01-19 07:08:32,078 INFO L130 PetriNetUnfolder]: For 178193/178206 co-relation queries the response was YES. [2022-01-19 07:08:32,158 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27500 conditions, 3216 events. 941/3216 cut-off events. For 178193/178206 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 25942 event pairs, 365 based on Foata normal form. 1/3118 useless extension candidates. Maximal degree in co-relation 27152. Up to 890 conditions per place. [2022-01-19 07:08:32,170 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 421 selfloop transitions, 185 changer transitions 58/805 dead transitions. [2022-01-19 07:08:32,170 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 897 places, 805 transitions, 19317 flow [2022-01-19 07:08:32,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:08:32,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:08:32,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4656 transitions. [2022-01-19 07:08:32,172 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7645320197044335 [2022-01-19 07:08:32,172 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4656 transitions. [2022-01-19 07:08:32,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4656 transitions. [2022-01-19 07:08:32,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:08:32,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4656 transitions. [2022-01-19 07:08:32,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.55172413793105) internal successors, (4656), 29 states have internal predecessors, (4656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:32,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:32,178 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:32,179 INFO L186 Difference]: Start difference. First operand has 883 places, 694 transitions, 15579 flow. Second operand 29 states and 4656 transitions. [2022-01-19 07:08:32,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 897 places, 805 transitions, 19317 flow [2022-01-19 07:08:33,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 885 places, 805 transitions, 18918 flow, removed 45 selfloop flow, removed 12 redundant places. [2022-01-19 07:08:33,441 INFO L242 Difference]: Finished difference. Result has 899 places, 706 transitions, 16037 flow [2022-01-19 07:08:33,442 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15244, PETRI_DIFFERENCE_MINUEND_PLACES=857, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=516, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=16037, PETRI_PLACES=899, PETRI_TRANSITIONS=706} [2022-01-19 07:08:33,442 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 712 predicate places. [2022-01-19 07:08:33,442 INFO L470 AbstractCegarLoop]: Abstraction has has 899 places, 706 transitions, 16037 flow [2022-01-19 07:08:33,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:33,442 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:08:33,442 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:08:33,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2022-01-19 07:08:33,442 INFO L402 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:08:33,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:08:33,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1099621338, now seen corresponding path program 171 times [2022-01-19 07:08:33,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:08:33,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245009869] [2022-01-19 07:08:33,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:08:33,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:08:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:08:33,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:08:33,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:08:33,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245009869] [2022-01-19 07:08:33,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245009869] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:08:33,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:08:33,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:08:33,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138614060] [2022-01-19 07:08:33,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:08:33,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:08:33,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:08:33,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:08:33,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:08:33,536 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:08:33,537 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 899 places, 706 transitions, 16037 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:33,537 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:08:33,537 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:08:33,537 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:08:35,102 INFO L129 PetriNetUnfolder]: 926/3186 cut-off events. [2022-01-19 07:08:35,102 INFO L130 PetriNetUnfolder]: For 185670/185683 co-relation queries the response was YES. [2022-01-19 07:08:35,180 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27816 conditions, 3186 events. 926/3186 cut-off events. For 185670/185683 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 25618 event pairs, 372 based on Foata normal form. 1/3091 useless extension candidates. Maximal degree in co-relation 27462. Up to 888 conditions per place. [2022-01-19 07:08:35,192 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 422 selfloop transitions, 164 changer transitions 63/790 dead transitions. [2022-01-19 07:08:35,192 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 914 places, 790 transitions, 19028 flow [2022-01-19 07:08:35,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:08:35,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:08:35,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4807 transitions. [2022-01-19 07:08:35,194 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763015873015873 [2022-01-19 07:08:35,194 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4807 transitions. [2022-01-19 07:08:35,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4807 transitions. [2022-01-19 07:08:35,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:08:35,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4807 transitions. [2022-01-19 07:08:35,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.23333333333332) internal successors, (4807), 30 states have internal predecessors, (4807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:35,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:35,200 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:35,200 INFO L186 Difference]: Start difference. First operand has 899 places, 706 transitions, 16037 flow. Second operand 30 states and 4807 transitions. [2022-01-19 07:08:35,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 914 places, 790 transitions, 19028 flow [2022-01-19 07:08:36,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 901 places, 790 transitions, 18664 flow, removed 94 selfloop flow, removed 13 redundant places. [2022-01-19 07:08:36,566 INFO L242 Difference]: Finished difference. Result has 910 places, 686 transitions, 15555 flow [2022-01-19 07:08:36,566 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15732, PETRI_DIFFERENCE_MINUEND_PLACES=872, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=706, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=15555, PETRI_PLACES=910, PETRI_TRANSITIONS=686} [2022-01-19 07:08:36,567 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 723 predicate places. [2022-01-19 07:08:36,567 INFO L470 AbstractCegarLoop]: Abstraction has has 910 places, 686 transitions, 15555 flow [2022-01-19 07:08:36,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:36,567 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:08:36,567 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:08:36,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2022-01-19 07:08:36,567 INFO L402 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:08:36,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:08:36,568 INFO L85 PathProgramCache]: Analyzing trace with hash -484841400, now seen corresponding path program 172 times [2022-01-19 07:08:36,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:08:36,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215184600] [2022-01-19 07:08:36,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:08:36,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:08:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:08:36,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:08:36,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:08:36,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215184600] [2022-01-19 07:08:36,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215184600] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:08:36,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:08:36,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:08:36,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786245426] [2022-01-19 07:08:36,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:08:36,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:08:36,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:08:36,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:08:36,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:08:36,675 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:08:36,676 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 910 places, 686 transitions, 15555 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:36,676 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:08:36,676 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:08:36,676 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:08:38,397 INFO L129 PetriNetUnfolder]: 942/3210 cut-off events. [2022-01-19 07:08:38,397 INFO L130 PetriNetUnfolder]: For 187001/187014 co-relation queries the response was YES. [2022-01-19 07:08:38,480 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28671 conditions, 3210 events. 942/3210 cut-off events. For 187001/187014 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 25819 event pairs, 412 based on Foata normal form. 1/3112 useless extension candidates. Maximal degree in co-relation 28316. Up to 889 conditions per place. [2022-01-19 07:08:38,493 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 435 selfloop transitions, 163 changer transitions 55/794 dead transitions. [2022-01-19 07:08:38,493 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 912 places, 794 transitions, 20015 flow [2022-01-19 07:08:38,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:08:38,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:08:38,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4824 transitions. [2022-01-19 07:08:38,495 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7657142857142857 [2022-01-19 07:08:38,495 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4824 transitions. [2022-01-19 07:08:38,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4824 transitions. [2022-01-19 07:08:38,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:08:38,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4824 transitions. [2022-01-19 07:08:38,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.8) internal successors, (4824), 30 states have internal predecessors, (4824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:38,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:38,501 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:38,501 INFO L186 Difference]: Start difference. First operand has 910 places, 686 transitions, 15555 flow. Second operand 30 states and 4824 transitions. [2022-01-19 07:08:38,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 912 places, 794 transitions, 20015 flow [2022-01-19 07:08:39,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 878 places, 794 transitions, 19331 flow, removed 97 selfloop flow, removed 34 redundant places. [2022-01-19 07:08:39,750 INFO L242 Difference]: Finished difference. Result has 893 places, 698 transitions, 15973 flow [2022-01-19 07:08:39,751 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15057, PETRI_DIFFERENCE_MINUEND_PLACES=849, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=686, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=15973, PETRI_PLACES=893, PETRI_TRANSITIONS=698} [2022-01-19 07:08:39,751 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 706 predicate places. [2022-01-19 07:08:39,751 INFO L470 AbstractCegarLoop]: Abstraction has has 893 places, 698 transitions, 15973 flow [2022-01-19 07:08:39,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:39,751 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:08:39,751 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:08:39,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2022-01-19 07:08:39,751 INFO L402 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:08:39,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:08:39,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1244779086, now seen corresponding path program 173 times [2022-01-19 07:08:39,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:08:39,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455472968] [2022-01-19 07:08:39,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:08:39,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:08:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:08:39,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:08:39,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:08:39,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455472968] [2022-01-19 07:08:39,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455472968] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:08:39,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:08:39,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:08:39,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028912768] [2022-01-19 07:08:39,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:08:39,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:08:39,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:08:39,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:08:39,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:08:39,854 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:08:39,855 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 893 places, 698 transitions, 15973 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:39,855 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:08:39,855 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:08:39,855 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:08:41,390 INFO L129 PetriNetUnfolder]: 937/3200 cut-off events. [2022-01-19 07:08:41,390 INFO L130 PetriNetUnfolder]: For 200205/200218 co-relation queries the response was YES. [2022-01-19 07:08:41,468 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29171 conditions, 3200 events. 937/3200 cut-off events. For 200205/200218 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 25595 event pairs, 405 based on Foata normal form. 1/3103 useless extension candidates. Maximal degree in co-relation 28822. Up to 888 conditions per place. [2022-01-19 07:08:41,480 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 440 selfloop transitions, 170 changer transitions 58/809 dead transitions. [2022-01-19 07:08:41,480 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 906 places, 809 transitions, 20577 flow [2022-01-19 07:08:41,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:08:41,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:08:41,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4666 transitions. [2022-01-19 07:08:41,482 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7661740558292283 [2022-01-19 07:08:41,482 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4666 transitions. [2022-01-19 07:08:41,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4666 transitions. [2022-01-19 07:08:41,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:08:41,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4666 transitions. [2022-01-19 07:08:41,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.89655172413794) internal successors, (4666), 29 states have internal predecessors, (4666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:41,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:41,489 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:41,489 INFO L186 Difference]: Start difference. First operand has 893 places, 698 transitions, 15973 flow. Second operand 29 states and 4666 transitions. [2022-01-19 07:08:41,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 906 places, 809 transitions, 20577 flow [2022-01-19 07:08:42,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 894 places, 809 transitions, 19920 flow, removed 247 selfloop flow, removed 12 redundant places. [2022-01-19 07:08:42,850 INFO L242 Difference]: Finished difference. Result has 907 places, 714 transitions, 16697 flow [2022-01-19 07:08:42,850 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15513, PETRI_DIFFERENCE_MINUEND_PLACES=866, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=16697, PETRI_PLACES=907, PETRI_TRANSITIONS=714} [2022-01-19 07:08:42,851 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 720 predicate places. [2022-01-19 07:08:42,851 INFO L470 AbstractCegarLoop]: Abstraction has has 907 places, 714 transitions, 16697 flow [2022-01-19 07:08:42,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:42,851 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:08:42,851 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:08:42,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2022-01-19 07:08:42,851 INFO L402 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:08:42,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:08:42,852 INFO L85 PathProgramCache]: Analyzing trace with hash 4568056, now seen corresponding path program 174 times [2022-01-19 07:08:42,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:08:42,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661295628] [2022-01-19 07:08:42,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:08:42,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:08:42,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:08:42,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:08:42,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:08:42,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661295628] [2022-01-19 07:08:42,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661295628] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:08:42,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:08:42,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:08:42,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596446023] [2022-01-19 07:08:42,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:08:42,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:08:42,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:08:42,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:08:42,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:08:42,956 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:08:42,957 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 907 places, 714 transitions, 16697 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:42,957 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:08:42,957 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:08:42,957 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:08:44,524 INFO L129 PetriNetUnfolder]: 938/3209 cut-off events. [2022-01-19 07:08:44,524 INFO L130 PetriNetUnfolder]: For 189655/189668 co-relation queries the response was YES. [2022-01-19 07:08:44,606 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28916 conditions, 3209 events. 938/3209 cut-off events. For 189655/189668 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 25766 event pairs, 402 based on Foata normal form. 1/3110 useless extension candidates. Maximal degree in co-relation 28562. Up to 889 conditions per place. [2022-01-19 07:08:44,618 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 453 selfloop transitions, 162 changer transitions 59/815 dead transitions. [2022-01-19 07:08:44,618 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 920 places, 815 transitions, 20703 flow [2022-01-19 07:08:44,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 07:08:44,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 07:08:44,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4515 transitions. [2022-01-19 07:08:44,621 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7678571428571429 [2022-01-19 07:08:44,621 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4515 transitions. [2022-01-19 07:08:44,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4515 transitions. [2022-01-19 07:08:44,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:08:44,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4515 transitions. [2022-01-19 07:08:44,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 161.25) internal successors, (4515), 28 states have internal predecessors, (4515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:44,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:44,627 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:44,627 INFO L186 Difference]: Start difference. First operand has 907 places, 714 transitions, 16697 flow. Second operand 28 states and 4515 transitions. [2022-01-19 07:08:44,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 920 places, 815 transitions, 20703 flow [2022-01-19 07:08:46,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 903 places, 815 transitions, 19618 flow, removed 446 selfloop flow, removed 17 redundant places. [2022-01-19 07:08:46,052 INFO L242 Difference]: Finished difference. Result has 915 places, 722 transitions, 16526 flow [2022-01-19 07:08:46,053 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15965, PETRI_DIFFERENCE_MINUEND_PLACES=876, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=714, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=16526, PETRI_PLACES=915, PETRI_TRANSITIONS=722} [2022-01-19 07:08:46,053 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 728 predicate places. [2022-01-19 07:08:46,053 INFO L470 AbstractCegarLoop]: Abstraction has has 915 places, 722 transitions, 16526 flow [2022-01-19 07:08:46,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:46,053 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:08:46,054 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:08:46,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2022-01-19 07:08:46,054 INFO L402 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:08:46,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:08:46,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1115585934, now seen corresponding path program 175 times [2022-01-19 07:08:46,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:08:46,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014852922] [2022-01-19 07:08:46,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:08:46,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:08:46,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:08:46,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:08:46,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:08:46,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014852922] [2022-01-19 07:08:46,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014852922] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:08:46,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:08:46,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:08:46,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275285798] [2022-01-19 07:08:46,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:08:46,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:08:46,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:08:46,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:08:46,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:08:46,162 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:08:46,162 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 915 places, 722 transitions, 16526 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:46,162 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:08:46,163 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:08:46,163 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:08:47,951 INFO L129 PetriNetUnfolder]: 916/3141 cut-off events. [2022-01-19 07:08:47,951 INFO L130 PetriNetUnfolder]: For 148362/148375 co-relation queries the response was YES. [2022-01-19 07:08:48,013 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26252 conditions, 3141 events. 916/3141 cut-off events. For 148362/148375 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 25115 event pairs, 408 based on Foata normal form. 1/3042 useless extension candidates. Maximal degree in co-relation 25899. Up to 883 conditions per place. [2022-01-19 07:08:48,025 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 447 selfloop transitions, 143 changer transitions 61/792 dead transitions. [2022-01-19 07:08:48,025 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 931 places, 792 transitions, 19456 flow [2022-01-19 07:08:48,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:08:48,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:08:48,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4817 transitions. [2022-01-19 07:08:48,028 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646031746031746 [2022-01-19 07:08:48,028 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4817 transitions. [2022-01-19 07:08:48,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4817 transitions. [2022-01-19 07:08:48,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:08:48,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4817 transitions. [2022-01-19 07:08:48,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.56666666666666) internal successors, (4817), 30 states have internal predecessors, (4817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:48,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:48,034 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:48,034 INFO L186 Difference]: Start difference. First operand has 915 places, 722 transitions, 16526 flow. Second operand 30 states and 4817 transitions. [2022-01-19 07:08:48,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 931 places, 792 transitions, 19456 flow [2022-01-19 07:08:49,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 916 places, 792 transitions, 19045 flow, removed 58 selfloop flow, removed 15 redundant places. [2022-01-19 07:08:49,166 INFO L242 Difference]: Finished difference. Result has 927 places, 698 transitions, 15803 flow [2022-01-19 07:08:49,166 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16164, PETRI_DIFFERENCE_MINUEND_PLACES=887, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=722, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=15803, PETRI_PLACES=927, PETRI_TRANSITIONS=698} [2022-01-19 07:08:49,166 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 740 predicate places. [2022-01-19 07:08:49,166 INFO L470 AbstractCegarLoop]: Abstraction has has 927 places, 698 transitions, 15803 flow [2022-01-19 07:08:49,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:49,167 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:08:49,167 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:08:49,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2022-01-19 07:08:49,167 INFO L402 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:08:49,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:08:49,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1170635184, now seen corresponding path program 176 times [2022-01-19 07:08:49,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:08:49,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405822231] [2022-01-19 07:08:49,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:08:49,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:08:49,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:08:49,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:08:49,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:08:49,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405822231] [2022-01-19 07:08:49,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405822231] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:08:49,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:08:49,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:08:49,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575080721] [2022-01-19 07:08:49,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:08:49,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:08:49,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:08:49,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:08:49,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:08:49,265 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:08:49,266 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 927 places, 698 transitions, 15803 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:49,266 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:08:49,266 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:08:49,266 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:08:50,844 INFO L129 PetriNetUnfolder]: 915/3147 cut-off events. [2022-01-19 07:08:50,844 INFO L130 PetriNetUnfolder]: For 146412/146425 co-relation queries the response was YES. [2022-01-19 07:08:50,939 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26311 conditions, 3147 events. 915/3147 cut-off events. For 146412/146425 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 25181 event pairs, 390 based on Foata normal form. 1/3050 useless extension candidates. Maximal degree in co-relation 25957. Up to 883 conditions per place. [2022-01-19 07:08:50,951 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 439 selfloop transitions, 157 changer transitions 59/796 dead transitions. [2022-01-19 07:08:50,951 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 918 places, 796 transitions, 19548 flow [2022-01-19 07:08:50,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 07:08:50,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 07:08:50,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4350 transitions. [2022-01-19 07:08:50,953 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7671957671957672 [2022-01-19 07:08:50,953 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4350 transitions. [2022-01-19 07:08:50,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4350 transitions. [2022-01-19 07:08:50,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:08:50,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4350 transitions. [2022-01-19 07:08:50,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 161.11111111111111) internal successors, (4350), 27 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:50,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:50,959 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:50,959 INFO L186 Difference]: Start difference. First operand has 927 places, 698 transitions, 15803 flow. Second operand 27 states and 4350 transitions. [2022-01-19 07:08:50,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 918 places, 796 transitions, 19548 flow [2022-01-19 07:08:52,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 885 places, 796 transitions, 18828 flow, removed 68 selfloop flow, removed 33 redundant places. [2022-01-19 07:08:52,018 INFO L242 Difference]: Finished difference. Result has 895 places, 702 transitions, 15673 flow [2022-01-19 07:08:52,018 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15250, PETRI_DIFFERENCE_MINUEND_PLACES=859, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=15673, PETRI_PLACES=895, PETRI_TRANSITIONS=702} [2022-01-19 07:08:52,018 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 708 predicate places. [2022-01-19 07:08:52,018 INFO L470 AbstractCegarLoop]: Abstraction has has 895 places, 702 transitions, 15673 flow [2022-01-19 07:08:52,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:52,019 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:08:52,019 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:08:52,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2022-01-19 07:08:52,019 INFO L402 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:08:52,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:08:52,019 INFO L85 PathProgramCache]: Analyzing trace with hash -407850412, now seen corresponding path program 177 times [2022-01-19 07:08:52,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:08:52,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524057468] [2022-01-19 07:08:52,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:08:52,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:08:52,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:08:52,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:08:52,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:08:52,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524057468] [2022-01-19 07:08:52,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524057468] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:08:52,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:08:52,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:08:52,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956664716] [2022-01-19 07:08:52,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:08:52,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:08:52,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:08:52,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:08:52,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:08:52,118 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:08:52,119 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 895 places, 702 transitions, 15673 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:52,119 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:08:52,119 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:08:52,119 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:08:53,552 INFO L129 PetriNetUnfolder]: 889/3068 cut-off events. [2022-01-19 07:08:53,552 INFO L130 PetriNetUnfolder]: For 133684/133697 co-relation queries the response was YES. [2022-01-19 07:08:53,625 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25055 conditions, 3068 events. 889/3068 cut-off events. For 133684/133697 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 24351 event pairs, 389 based on Foata normal form. 1/2972 useless extension candidates. Maximal degree in co-relation 24711. Up to 875 conditions per place. [2022-01-19 07:08:53,636 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 429 selfloop transitions, 134 changer transitions 62/766 dead transitions. [2022-01-19 07:08:53,636 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 912 places, 766 transitions, 18422 flow [2022-01-19 07:08:53,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:08:53,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:08:53,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4808 transitions. [2022-01-19 07:08:53,638 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7631746031746032 [2022-01-19 07:08:53,638 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4808 transitions. [2022-01-19 07:08:53,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4808 transitions. [2022-01-19 07:08:53,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:08:53,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4808 transitions. [2022-01-19 07:08:53,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.26666666666668) internal successors, (4808), 30 states have internal predecessors, (4808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:53,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:53,644 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:53,644 INFO L186 Difference]: Start difference. First operand has 895 places, 702 transitions, 15673 flow. Second operand 30 states and 4808 transitions. [2022-01-19 07:08:53,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 912 places, 766 transitions, 18422 flow [2022-01-19 07:08:54,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 894 places, 766 transitions, 17994 flow, removed 55 selfloop flow, removed 18 redundant places. [2022-01-19 07:08:54,678 INFO L242 Difference]: Finished difference. Result has 905 places, 670 transitions, 14713 flow [2022-01-19 07:08:54,679 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15301, PETRI_DIFFERENCE_MINUEND_PLACES=865, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=14713, PETRI_PLACES=905, PETRI_TRANSITIONS=670} [2022-01-19 07:08:54,679 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 718 predicate places. [2022-01-19 07:08:54,679 INFO L470 AbstractCegarLoop]: Abstraction has has 905 places, 670 transitions, 14713 flow [2022-01-19 07:08:54,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:54,680 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:08:54,680 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:08:54,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2022-01-19 07:08:54,680 INFO L402 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:08:54,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:08:54,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1877316860, now seen corresponding path program 178 times [2022-01-19 07:08:54,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:08:54,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401187764] [2022-01-19 07:08:54,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:08:54,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:08:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:08:54,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:08:54,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:08:54,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401187764] [2022-01-19 07:08:54,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401187764] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:08:54,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:08:54,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:08:54,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961864802] [2022-01-19 07:08:54,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:08:54,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:08:54,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:08:54,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:08:54,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:08:54,773 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:08:54,773 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 905 places, 670 transitions, 14713 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:54,774 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:08:54,774 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:08:54,774 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:08:56,380 INFO L129 PetriNetUnfolder]: 900/3156 cut-off events. [2022-01-19 07:08:56,380 INFO L130 PetriNetUnfolder]: For 134683/134696 co-relation queries the response was YES. [2022-01-19 07:08:56,458 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25462 conditions, 3156 events. 900/3156 cut-off events. For 134683/134696 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 25385 event pairs, 384 based on Foata normal form. 1/3063 useless extension candidates. Maximal degree in co-relation 25117. Up to 875 conditions per place. [2022-01-19 07:08:56,470 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 401 selfloop transitions, 189 changer transitions 92/823 dead transitions. [2022-01-19 07:08:56,470 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 905 places, 823 transitions, 20062 flow [2022-01-19 07:08:56,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-19 07:08:56,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-01-19 07:08:56,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 6701 transitions. [2022-01-19 07:08:56,473 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.759750566893424 [2022-01-19 07:08:56,473 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 6701 transitions. [2022-01-19 07:08:56,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 6701 transitions. [2022-01-19 07:08:56,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:08:56,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 6701 transitions. [2022-01-19 07:08:56,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 159.54761904761904) internal successors, (6701), 42 states have internal predecessors, (6701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:56,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 210.0) internal successors, (9030), 43 states have internal predecessors, (9030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:56,482 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 210.0) internal successors, (9030), 43 states have internal predecessors, (9030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:56,482 INFO L186 Difference]: Start difference. First operand has 905 places, 670 transitions, 14713 flow. Second operand 42 states and 6701 transitions. [2022-01-19 07:08:56,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 905 places, 823 transitions, 20062 flow [2022-01-19 07:08:57,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 872 places, 823 transitions, 19111 flow, removed 46 selfloop flow, removed 33 redundant places. [2022-01-19 07:08:57,470 INFO L242 Difference]: Finished difference. Result has 902 places, 677 transitions, 15056 flow [2022-01-19 07:08:57,470 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14083, PETRI_DIFFERENCE_MINUEND_PLACES=831, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=15056, PETRI_PLACES=902, PETRI_TRANSITIONS=677} [2022-01-19 07:08:57,470 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 715 predicate places. [2022-01-19 07:08:57,470 INFO L470 AbstractCegarLoop]: Abstraction has has 902 places, 677 transitions, 15056 flow [2022-01-19 07:08:57,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:57,471 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:08:57,471 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:08:57,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2022-01-19 07:08:57,471 INFO L402 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:08:57,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:08:57,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1515229692, now seen corresponding path program 179 times [2022-01-19 07:08:57,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:08:57,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170694687] [2022-01-19 07:08:57,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:08:57,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:08:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:08:57,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:08:57,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:08:57,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170694687] [2022-01-19 07:08:57,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170694687] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:08:57,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:08:57,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:08:57,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654389663] [2022-01-19 07:08:57,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:08:57,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:08:57,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:08:57,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:08:57,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:08:57,571 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:08:57,571 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 902 places, 677 transitions, 15056 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:57,571 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:08:57,571 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:08:57,572 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:08:58,994 INFO L129 PetriNetUnfolder]: 897/3098 cut-off events. [2022-01-19 07:08:58,994 INFO L130 PetriNetUnfolder]: For 127879/127892 co-relation queries the response was YES. [2022-01-19 07:08:59,079 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25006 conditions, 3098 events. 897/3098 cut-off events. For 127879/127892 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 24708 event pairs, 399 based on Foata normal form. 1/2998 useless extension candidates. Maximal degree in co-relation 24652. Up to 875 conditions per place. [2022-01-19 07:08:59,090 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 403 selfloop transitions, 178 changer transitions 57/779 dead transitions. [2022-01-19 07:08:59,090 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 901 places, 779 transitions, 18711 flow [2022-01-19 07:08:59,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:08:59,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:08:59,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4662 transitions. [2022-01-19 07:08:59,092 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655172413793103 [2022-01-19 07:08:59,092 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4662 transitions. [2022-01-19 07:08:59,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4662 transitions. [2022-01-19 07:08:59,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:08:59,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4662 transitions. [2022-01-19 07:08:59,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.75862068965517) internal successors, (4662), 29 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:59,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:59,099 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:08:59,099 INFO L186 Difference]: Start difference. First operand has 902 places, 677 transitions, 15056 flow. Second operand 29 states and 4662 transitions. [2022-01-19 07:08:59,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 901 places, 779 transitions, 18711 flow [2022-01-19 07:09:00,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 863 places, 779 transitions, 17777 flow, removed 222 selfloop flow, removed 38 redundant places. [2022-01-19 07:09:00,088 INFO L242 Difference]: Finished difference. Result has 877 places, 689 transitions, 15179 flow [2022-01-19 07:09:00,088 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14473, PETRI_DIFFERENCE_MINUEND_PLACES=835, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=15179, PETRI_PLACES=877, PETRI_TRANSITIONS=689} [2022-01-19 07:09:00,088 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 690 predicate places. [2022-01-19 07:09:00,088 INFO L470 AbstractCegarLoop]: Abstraction has has 877 places, 689 transitions, 15179 flow [2022-01-19 07:09:00,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:00,089 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:09:00,089 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:09:00,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2022-01-19 07:09:00,089 INFO L402 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:09:00,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:09:00,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1226740466, now seen corresponding path program 180 times [2022-01-19 07:09:00,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:09:00,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607648229] [2022-01-19 07:09:00,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:09:00,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:09:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:09:00,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:09:00,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:09:00,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607648229] [2022-01-19 07:09:00,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607648229] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:09:00,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:09:00,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:09:00,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900045793] [2022-01-19 07:09:00,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:09:00,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:09:00,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:09:00,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:09:00,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:09:00,192 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:09:00,192 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 877 places, 689 transitions, 15179 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:00,192 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:09:00,193 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:09:00,193 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:09:01,697 INFO L129 PetriNetUnfolder]: 896/3095 cut-off events. [2022-01-19 07:09:01,697 INFO L130 PetriNetUnfolder]: For 112328/112341 co-relation queries the response was YES. [2022-01-19 07:09:01,772 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24493 conditions, 3095 events. 896/3095 cut-off events. For 112328/112341 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 24684 event pairs, 398 based on Foata normal form. 1/2994 useless extension candidates. Maximal degree in co-relation 24158. Up to 875 conditions per place. [2022-01-19 07:09:01,784 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 428 selfloop transitions, 160 changer transitions 59/788 dead transitions. [2022-01-19 07:09:01,784 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 890 places, 788 transitions, 18580 flow [2022-01-19 07:09:01,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 07:09:01,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 07:09:01,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4507 transitions. [2022-01-19 07:09:01,787 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7664965986394557 [2022-01-19 07:09:01,787 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4507 transitions. [2022-01-19 07:09:01,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4507 transitions. [2022-01-19 07:09:01,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:09:01,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4507 transitions. [2022-01-19 07:09:01,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.96428571428572) internal successors, (4507), 28 states have internal predecessors, (4507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:01,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:01,793 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:01,793 INFO L186 Difference]: Start difference. First operand has 877 places, 689 transitions, 15179 flow. Second operand 28 states and 4507 transitions. [2022-01-19 07:09:01,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 890 places, 788 transitions, 18580 flow [2022-01-19 07:09:02,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 878 places, 788 transitions, 18221 flow, removed 60 selfloop flow, removed 12 redundant places. [2022-01-19 07:09:02,739 INFO L242 Difference]: Finished difference. Result has 890 places, 697 transitions, 15444 flow [2022-01-19 07:09:02,739 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14872, PETRI_DIFFERENCE_MINUEND_PLACES=851, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=689, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=15444, PETRI_PLACES=890, PETRI_TRANSITIONS=697} [2022-01-19 07:09:02,739 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 703 predicate places. [2022-01-19 07:09:02,739 INFO L470 AbstractCegarLoop]: Abstraction has has 890 places, 697 transitions, 15444 flow [2022-01-19 07:09:02,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:02,739 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:09:02,740 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:09:02,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2022-01-19 07:09:02,740 INFO L402 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:09:02,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:09:02,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1444696966, now seen corresponding path program 181 times [2022-01-19 07:09:02,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:09:02,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242942143] [2022-01-19 07:09:02,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:09:02,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:09:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:09:02,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:09:02,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:09:02,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242942143] [2022-01-19 07:09:02,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242942143] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:09:02,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:09:02,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:09:02,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249580981] [2022-01-19 07:09:02,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:09:02,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:09:02,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:09:02,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:09:02,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:09:02,841 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:09:02,842 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 890 places, 697 transitions, 15444 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:02,842 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:09:02,842 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:09:02,842 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:09:04,506 INFO L129 PetriNetUnfolder]: 907/3167 cut-off events. [2022-01-19 07:09:04,506 INFO L130 PetriNetUnfolder]: For 115710/115723 co-relation queries the response was YES. [2022-01-19 07:09:04,584 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24979 conditions, 3167 events. 907/3167 cut-off events. For 115710/115723 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 25561 event pairs, 392 based on Foata normal form. 1/3069 useless extension candidates. Maximal degree in co-relation 24640. Up to 875 conditions per place. [2022-01-19 07:09:04,597 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 444 selfloop transitions, 166 changer transitions 72/823 dead transitions. [2022-01-19 07:09:04,597 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 912 places, 823 transitions, 19729 flow [2022-01-19 07:09:04,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 07:09:04,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 07:09:04,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5769 transitions. [2022-01-19 07:09:04,599 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763095238095238 [2022-01-19 07:09:04,600 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5769 transitions. [2022-01-19 07:09:04,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5769 transitions. [2022-01-19 07:09:04,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:09:04,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5769 transitions. [2022-01-19 07:09:04,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.25) internal successors, (5769), 36 states have internal predecessors, (5769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:04,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:04,607 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:04,607 INFO L186 Difference]: Start difference. First operand has 890 places, 697 transitions, 15444 flow. Second operand 36 states and 5769 transitions. [2022-01-19 07:09:04,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 912 places, 823 transitions, 19729 flow [2022-01-19 07:09:05,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 897 places, 823 transitions, 19259 flow, removed 77 selfloop flow, removed 15 redundant places. [2022-01-19 07:09:05,591 INFO L242 Difference]: Finished difference. Result has 920 places, 713 transitions, 16064 flow [2022-01-19 07:09:05,591 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15091, PETRI_DIFFERENCE_MINUEND_PLACES=862, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=16064, PETRI_PLACES=920, PETRI_TRANSITIONS=713} [2022-01-19 07:09:05,591 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 733 predicate places. [2022-01-19 07:09:05,591 INFO L470 AbstractCegarLoop]: Abstraction has has 920 places, 713 transitions, 16064 flow [2022-01-19 07:09:05,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:05,592 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:09:05,592 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:09:05,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2022-01-19 07:09:05,592 INFO L402 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:09:05,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:09:05,592 INFO L85 PathProgramCache]: Analyzing trace with hash -605739498, now seen corresponding path program 182 times [2022-01-19 07:09:05,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:09:05,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676367579] [2022-01-19 07:09:05,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:09:05,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:09:05,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:09:05,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:09:05,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:09:05,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676367579] [2022-01-19 07:09:05,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676367579] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:09:05,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:09:05,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:09:05,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606198021] [2022-01-19 07:09:05,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:09:05,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:09:05,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:09:05,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:09:05,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:09:05,692 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:09:05,693 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 920 places, 713 transitions, 16064 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:05,693 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:09:05,693 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:09:05,693 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:09:07,352 INFO L129 PetriNetUnfolder]: 918/3178 cut-off events. [2022-01-19 07:09:07,353 INFO L130 PetriNetUnfolder]: For 116623/116636 co-relation queries the response was YES. [2022-01-19 07:09:07,423 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25437 conditions, 3178 events. 918/3178 cut-off events. For 116623/116636 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 25580 event pairs, 391 based on Foata normal form. 1/3077 useless extension candidates. Maximal degree in co-relation 25085. Up to 876 conditions per place. [2022-01-19 07:09:07,435 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 407 selfloop transitions, 217 changer transitions 61/826 dead transitions. [2022-01-19 07:09:07,435 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 927 places, 826 transitions, 20016 flow [2022-01-19 07:09:07,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:09:07,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:09:07,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4817 transitions. [2022-01-19 07:09:07,438 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646031746031746 [2022-01-19 07:09:07,438 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4817 transitions. [2022-01-19 07:09:07,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4817 transitions. [2022-01-19 07:09:07,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:09:07,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4817 transitions. [2022-01-19 07:09:07,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.56666666666666) internal successors, (4817), 30 states have internal predecessors, (4817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:07,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:07,444 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:07,444 INFO L186 Difference]: Start difference. First operand has 920 places, 713 transitions, 16064 flow. Second operand 30 states and 4817 transitions. [2022-01-19 07:09:07,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 927 places, 826 transitions, 20016 flow [2022-01-19 07:09:08,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 902 places, 826 transitions, 19412 flow, removed 105 selfloop flow, removed 25 redundant places. [2022-01-19 07:09:08,402 INFO L242 Difference]: Finished difference. Result has 917 places, 730 transitions, 16618 flow [2022-01-19 07:09:08,402 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15607, PETRI_DIFFERENCE_MINUEND_PLACES=873, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=713, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=16618, PETRI_PLACES=917, PETRI_TRANSITIONS=730} [2022-01-19 07:09:08,403 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 730 predicate places. [2022-01-19 07:09:08,403 INFO L470 AbstractCegarLoop]: Abstraction has has 917 places, 730 transitions, 16618 flow [2022-01-19 07:09:08,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:08,403 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:09:08,403 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:09:08,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2022-01-19 07:09:08,403 INFO L402 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:09:08,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:09:08,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1687932682, now seen corresponding path program 183 times [2022-01-19 07:09:08,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:09:08,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100212807] [2022-01-19 07:09:08,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:09:08,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:09:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:09:08,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:09:08,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:09:08,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100212807] [2022-01-19 07:09:08,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100212807] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:09:08,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:09:08,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:09:08,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870920942] [2022-01-19 07:09:08,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:09:08,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:09:08,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:09:08,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:09:08,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:09:08,498 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:09:08,498 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 917 places, 730 transitions, 16618 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:08,498 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:09:08,498 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:09:08,498 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:09:10,263 INFO L129 PetriNetUnfolder]: 937/3260 cut-off events. [2022-01-19 07:09:10,263 INFO L130 PetriNetUnfolder]: For 118781/118794 co-relation queries the response was YES. [2022-01-19 07:09:10,362 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26038 conditions, 3260 events. 937/3260 cut-off events. For 118781/118794 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 26610 event pairs, 398 based on Foata normal form. 1/3159 useless extension candidates. Maximal degree in co-relation 25690. Up to 875 conditions per place. [2022-01-19 07:09:10,374 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 446 selfloop transitions, 200 changer transitions 68/855 dead transitions. [2022-01-19 07:09:10,374 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 938 places, 855 transitions, 20969 flow [2022-01-19 07:09:10,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 07:09:10,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 07:09:10,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5924 transitions. [2022-01-19 07:09:10,377 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7624195624195624 [2022-01-19 07:09:10,377 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5924 transitions. [2022-01-19 07:09:10,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5924 transitions. [2022-01-19 07:09:10,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:09:10,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5924 transitions. [2022-01-19 07:09:10,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.1081081081081) internal successors, (5924), 37 states have internal predecessors, (5924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:10,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:10,384 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:10,385 INFO L186 Difference]: Start difference. First operand has 917 places, 730 transitions, 16618 flow. Second operand 37 states and 5924 transitions. [2022-01-19 07:09:10,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 938 places, 855 transitions, 20969 flow [2022-01-19 07:09:11,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 927 places, 855 transitions, 20630 flow, removed 79 selfloop flow, removed 11 redundant places. [2022-01-19 07:09:11,380 INFO L242 Difference]: Finished difference. Result has 950 places, 748 transitions, 17461 flow [2022-01-19 07:09:11,380 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16348, PETRI_DIFFERENCE_MINUEND_PLACES=891, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=17461, PETRI_PLACES=950, PETRI_TRANSITIONS=748} [2022-01-19 07:09:11,381 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 763 predicate places. [2022-01-19 07:09:11,381 INFO L470 AbstractCegarLoop]: Abstraction has has 950 places, 748 transitions, 17461 flow [2022-01-19 07:09:11,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:11,381 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:09:11,381 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:09:11,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2022-01-19 07:09:11,381 INFO L402 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:09:11,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:09:11,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1628238862, now seen corresponding path program 184 times [2022-01-19 07:09:11,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:09:11,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708953747] [2022-01-19 07:09:11,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:09:11,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:09:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:09:11,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:09:11,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:09:11,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708953747] [2022-01-19 07:09:11,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708953747] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:09:11,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:09:11,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:09:11,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406476691] [2022-01-19 07:09:11,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:09:11,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:09:11,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:09:11,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:09:11,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:09:11,501 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:09:11,502 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 950 places, 748 transitions, 17461 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:11,502 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:09:11,502 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:09:11,502 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:09:13,127 INFO L129 PetriNetUnfolder]: 938/3247 cut-off events. [2022-01-19 07:09:13,128 INFO L130 PetriNetUnfolder]: For 122718/122731 co-relation queries the response was YES. [2022-01-19 07:09:13,220 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26331 conditions, 3247 events. 938/3247 cut-off events. For 122718/122731 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 26337 event pairs, 403 based on Foata normal form. 1/3142 useless extension candidates. Maximal degree in co-relation 25969. Up to 876 conditions per place. [2022-01-19 07:09:13,234 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 463 selfloop transitions, 185 changer transitions 58/847 dead transitions. [2022-01-19 07:09:13,234 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 956 places, 847 transitions, 21174 flow [2022-01-19 07:09:13,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:09:13,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:09:13,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4822 transitions. [2022-01-19 07:09:13,236 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7653968253968254 [2022-01-19 07:09:13,236 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4822 transitions. [2022-01-19 07:09:13,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4822 transitions. [2022-01-19 07:09:13,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:09:13,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4822 transitions. [2022-01-19 07:09:13,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.73333333333332) internal successors, (4822), 30 states have internal predecessors, (4822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:13,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:13,242 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:13,242 INFO L186 Difference]: Start difference. First operand has 950 places, 748 transitions, 17461 flow. Second operand 30 states and 4822 transitions. [2022-01-19 07:09:13,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 956 places, 847 transitions, 21174 flow [2022-01-19 07:09:14,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 936 places, 847 transitions, 20759 flow, removed 66 selfloop flow, removed 20 redundant places. [2022-01-19 07:09:14,249 INFO L242 Difference]: Finished difference. Result has 949 places, 761 transitions, 17918 flow [2022-01-19 07:09:14,249 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17094, PETRI_DIFFERENCE_MINUEND_PLACES=907, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=569, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17918, PETRI_PLACES=949, PETRI_TRANSITIONS=761} [2022-01-19 07:09:14,249 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 762 predicate places. [2022-01-19 07:09:14,249 INFO L470 AbstractCegarLoop]: Abstraction has has 949 places, 761 transitions, 17918 flow [2022-01-19 07:09:14,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:14,249 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:09:14,249 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:09:14,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2022-01-19 07:09:14,250 INFO L402 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:09:14,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:09:14,250 INFO L85 PathProgramCache]: Analyzing trace with hash 628529562, now seen corresponding path program 185 times [2022-01-19 07:09:14,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:09:14,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193509776] [2022-01-19 07:09:14,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:09:14,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:09:14,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:09:14,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:09:14,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:09:14,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193509776] [2022-01-19 07:09:14,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193509776] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:09:14,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:09:14,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:09:14,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632254500] [2022-01-19 07:09:14,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:09:14,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:09:14,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:09:14,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:09:14,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:09:14,352 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:09:14,352 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 949 places, 761 transitions, 17918 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:14,352 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:09:14,352 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:09:14,352 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:09:16,099 INFO L129 PetriNetUnfolder]: 917/3182 cut-off events. [2022-01-19 07:09:16,099 INFO L130 PetriNetUnfolder]: For 121848/121861 co-relation queries the response was YES. [2022-01-19 07:09:16,168 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25732 conditions, 3182 events. 917/3182 cut-off events. For 121848/121861 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 25607 event pairs, 390 based on Foata normal form. 1/3080 useless extension candidates. Maximal degree in co-relation 25373. Up to 871 conditions per place. [2022-01-19 07:09:16,179 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 449 selfloop transitions, 173 changer transitions 63/826 dead transitions. [2022-01-19 07:09:16,179 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 963 places, 826 transitions, 20521 flow [2022-01-19 07:09:16,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:09:16,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:09:16,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4809 transitions. [2022-01-19 07:09:16,181 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7633333333333333 [2022-01-19 07:09:16,181 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4809 transitions. [2022-01-19 07:09:16,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4809 transitions. [2022-01-19 07:09:16,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:09:16,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4809 transitions. [2022-01-19 07:09:16,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.3) internal successors, (4809), 30 states have internal predecessors, (4809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:16,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:16,187 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:16,187 INFO L186 Difference]: Start difference. First operand has 949 places, 761 transitions, 17918 flow. Second operand 30 states and 4809 transitions. [2022-01-19 07:09:16,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 963 places, 826 transitions, 20521 flow [2022-01-19 07:09:17,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 951 places, 826 transitions, 20172 flow, removed 75 selfloop flow, removed 12 redundant places. [2022-01-19 07:09:17,257 INFO L242 Difference]: Finished difference. Result has 962 places, 734 transitions, 17162 flow [2022-01-19 07:09:17,257 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17614, PETRI_DIFFERENCE_MINUEND_PLACES=922, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=761, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=588, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17162, PETRI_PLACES=962, PETRI_TRANSITIONS=734} [2022-01-19 07:09:17,259 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 775 predicate places. [2022-01-19 07:09:17,259 INFO L470 AbstractCegarLoop]: Abstraction has has 962 places, 734 transitions, 17162 flow [2022-01-19 07:09:17,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:17,259 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:09:17,259 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:09:17,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2022-01-19 07:09:17,260 INFO L402 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:09:17,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:09:17,260 INFO L85 PathProgramCache]: Analyzing trace with hash -52605164, now seen corresponding path program 186 times [2022-01-19 07:09:17,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:09:17,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005674224] [2022-01-19 07:09:17,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:09:17,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:09:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:09:17,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:09:17,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:09:17,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005674224] [2022-01-19 07:09:17,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005674224] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:09:17,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:09:17,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:09:17,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181359135] [2022-01-19 07:09:17,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:09:17,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:09:17,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:09:17,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:09:17,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:09:17,365 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:09:17,366 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 962 places, 734 transitions, 17162 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:17,366 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:09:17,366 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:09:17,366 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:09:19,034 INFO L129 PetriNetUnfolder]: 912/3175 cut-off events. [2022-01-19 07:09:19,034 INFO L130 PetriNetUnfolder]: For 118669/118682 co-relation queries the response was YES. [2022-01-19 07:09:19,132 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25744 conditions, 3175 events. 912/3175 cut-off events. For 118669/118682 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 25635 event pairs, 396 based on Foata normal form. 1/3072 useless extension candidates. Maximal degree in co-relation 25382. Up to 869 conditions per place. [2022-01-19 07:09:19,145 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 451 selfloop transitions, 171 changer transitions 59/822 dead transitions. [2022-01-19 07:09:19,145 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 955 places, 822 transitions, 20509 flow [2022-01-19 07:09:19,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:09:19,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:09:19,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4664 transitions. [2022-01-19 07:09:19,147 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658456486042693 [2022-01-19 07:09:19,147 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4664 transitions. [2022-01-19 07:09:19,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4664 transitions. [2022-01-19 07:09:19,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:09:19,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4664 transitions. [2022-01-19 07:09:19,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.82758620689654) internal successors, (4664), 29 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:19,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:19,153 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:19,153 INFO L186 Difference]: Start difference. First operand has 962 places, 734 transitions, 17162 flow. Second operand 29 states and 4664 transitions. [2022-01-19 07:09:19,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 955 places, 822 transitions, 20509 flow [2022-01-19 07:09:20,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 925 places, 822 transitions, 19733 flow, removed 47 selfloop flow, removed 30 redundant places. [2022-01-19 07:09:20,150 INFO L242 Difference]: Finished difference. Result has 938 places, 736 transitions, 16929 flow [2022-01-19 07:09:20,150 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16519, PETRI_DIFFERENCE_MINUEND_PLACES=897, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=16929, PETRI_PLACES=938, PETRI_TRANSITIONS=736} [2022-01-19 07:09:20,151 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 751 predicate places. [2022-01-19 07:09:20,151 INFO L470 AbstractCegarLoop]: Abstraction has has 938 places, 736 transitions, 16929 flow [2022-01-19 07:09:20,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:20,151 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:09:20,151 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:09:20,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2022-01-19 07:09:20,151 INFO L402 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:09:20,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:09:20,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1115390356, now seen corresponding path program 187 times [2022-01-19 07:09:20,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:09:20,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618280099] [2022-01-19 07:09:20,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:09:20,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:09:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:09:20,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:09:20,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:09:20,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618280099] [2022-01-19 07:09:20,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618280099] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:09:20,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:09:20,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:09:20,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435754612] [2022-01-19 07:09:20,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:09:20,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:09:20,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:09:20,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:09:20,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:09:20,255 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:09:20,256 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 938 places, 736 transitions, 16929 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:20,256 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:09:20,256 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:09:20,256 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:09:21,892 INFO L129 PetriNetUnfolder]: 907/3156 cut-off events. [2022-01-19 07:09:21,892 INFO L130 PetriNetUnfolder]: For 113399/113412 co-relation queries the response was YES. [2022-01-19 07:09:21,968 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25265 conditions, 3156 events. 907/3156 cut-off events. For 113399/113412 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 25408 event pairs, 394 based on Foata normal form. 1/3054 useless extension candidates. Maximal degree in co-relation 24908. Up to 871 conditions per place. [2022-01-19 07:09:21,980 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 440 selfloop transitions, 188 changer transitions 59/828 dead transitions. [2022-01-19 07:09:21,980 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 953 places, 828 transitions, 20241 flow [2022-01-19 07:09:21,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:09:21,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:09:21,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4820 transitions. [2022-01-19 07:09:21,982 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.765079365079365 [2022-01-19 07:09:21,982 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4820 transitions. [2022-01-19 07:09:21,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4820 transitions. [2022-01-19 07:09:21,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:09:21,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4820 transitions. [2022-01-19 07:09:21,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.66666666666666) internal successors, (4820), 30 states have internal predecessors, (4820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:21,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:21,988 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:21,988 INFO L186 Difference]: Start difference. First operand has 938 places, 736 transitions, 16929 flow. Second operand 30 states and 4820 transitions. [2022-01-19 07:09:21,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 953 places, 828 transitions, 20241 flow [2022-01-19 07:09:22,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 939 places, 828 transitions, 19887 flow, removed 67 selfloop flow, removed 14 redundant places. [2022-01-19 07:09:22,990 INFO L242 Difference]: Finished difference. Result has 953 places, 740 transitions, 17116 flow [2022-01-19 07:09:22,990 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16616, PETRI_DIFFERENCE_MINUEND_PLACES=910, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=736, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17116, PETRI_PLACES=953, PETRI_TRANSITIONS=740} [2022-01-19 07:09:22,990 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 766 predicate places. [2022-01-19 07:09:22,990 INFO L470 AbstractCegarLoop]: Abstraction has has 953 places, 740 transitions, 17116 flow [2022-01-19 07:09:22,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:22,991 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:09:22,991 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:09:22,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2022-01-19 07:09:22,991 INFO L402 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:09:22,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:09:22,991 INFO L85 PathProgramCache]: Analyzing trace with hash -689926010, now seen corresponding path program 188 times [2022-01-19 07:09:22,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:09:22,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716368459] [2022-01-19 07:09:22,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:09:22,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:09:22,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:09:23,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:09:23,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:09:23,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716368459] [2022-01-19 07:09:23,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716368459] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:09:23,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:09:23,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:09:23,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840214003] [2022-01-19 07:09:23,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:09:23,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:09:23,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:09:23,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:09:23,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:09:23,085 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:09:23,086 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 953 places, 740 transitions, 17116 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:23,086 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:09:23,086 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:09:23,086 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:09:24,809 INFO L129 PetriNetUnfolder]: 901/3166 cut-off events. [2022-01-19 07:09:24,809 INFO L130 PetriNetUnfolder]: For 114046/114059 co-relation queries the response was YES. [2022-01-19 07:09:24,907 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25240 conditions, 3166 events. 901/3166 cut-off events. For 114046/114059 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 25646 event pairs, 390 based on Foata normal form. 1/3065 useless extension candidates. Maximal degree in co-relation 24878. Up to 870 conditions per place. [2022-01-19 07:09:24,919 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 408 selfloop transitions, 212 changer transitions 73/834 dead transitions. [2022-01-19 07:09:24,919 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 975 places, 834 transitions, 20580 flow [2022-01-19 07:09:24,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:09:24,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:09:24,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6073 transitions. [2022-01-19 07:09:24,921 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7610275689223057 [2022-01-19 07:09:24,921 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6073 transitions. [2022-01-19 07:09:24,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6073 transitions. [2022-01-19 07:09:24,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:09:24,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6073 transitions. [2022-01-19 07:09:24,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.81578947368422) internal successors, (6073), 38 states have internal predecessors, (6073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:24,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:24,929 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:24,929 INFO L186 Difference]: Start difference. First operand has 953 places, 740 transitions, 17116 flow. Second operand 38 states and 6073 transitions. [2022-01-19 07:09:24,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 975 places, 834 transitions, 20580 flow [2022-01-19 07:09:25,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 960 places, 834 transitions, 20174 flow, removed 60 selfloop flow, removed 15 redundant places. [2022-01-19 07:09:25,942 INFO L242 Difference]: Finished difference. Result has 977 places, 735 transitions, 17150 flow [2022-01-19 07:09:25,943 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16767, PETRI_DIFFERENCE_MINUEND_PLACES=923, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=17150, PETRI_PLACES=977, PETRI_TRANSITIONS=735} [2022-01-19 07:09:25,943 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 790 predicate places. [2022-01-19 07:09:25,943 INFO L470 AbstractCegarLoop]: Abstraction has has 977 places, 735 transitions, 17150 flow [2022-01-19 07:09:25,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:25,943 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:09:25,943 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:09:25,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2022-01-19 07:09:25,943 INFO L402 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:09:25,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:09:25,944 INFO L85 PathProgramCache]: Analyzing trace with hash -572136264, now seen corresponding path program 189 times [2022-01-19 07:09:25,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:09:25,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828528873] [2022-01-19 07:09:25,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:09:25,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:09:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:09:26,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:09:26,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:09:26,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828528873] [2022-01-19 07:09:26,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828528873] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:09:26,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:09:26,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:09:26,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356316884] [2022-01-19 07:09:26,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:09:26,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:09:26,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:09:26,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:09:26,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:09:26,045 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:09:26,046 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 977 places, 735 transitions, 17150 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:26,046 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:09:26,046 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:09:26,046 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:09:27,519 INFO L129 PetriNetUnfolder]: 878/3089 cut-off events. [2022-01-19 07:09:27,520 INFO L130 PetriNetUnfolder]: For 114174/114187 co-relation queries the response was YES. [2022-01-19 07:09:27,601 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24622 conditions, 3089 events. 878/3089 cut-off events. For 114174/114187 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 24764 event pairs, 388 based on Foata normal form. 1/2990 useless extension candidates. Maximal degree in co-relation 24254. Up to 870 conditions per place. [2022-01-19 07:09:27,613 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 399 selfloop transitions, 194 changer transitions 62/796 dead transitions. [2022-01-19 07:09:27,614 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 980 places, 796 transitions, 19663 flow [2022-01-19 07:09:27,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 07:09:27,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 07:09:27,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4492 transitions. [2022-01-19 07:09:27,616 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7639455782312925 [2022-01-19 07:09:27,616 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4492 transitions. [2022-01-19 07:09:27,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4492 transitions. [2022-01-19 07:09:27,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:09:27,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4492 transitions. [2022-01-19 07:09:27,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.42857142857142) internal successors, (4492), 28 states have internal predecessors, (4492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:27,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:27,622 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:27,622 INFO L186 Difference]: Start difference. First operand has 977 places, 735 transitions, 17150 flow. Second operand 28 states and 4492 transitions. [2022-01-19 07:09:27,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 980 places, 796 transitions, 19663 flow [2022-01-19 07:09:28,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 953 places, 796 transitions, 19185 flow, removed 58 selfloop flow, removed 27 redundant places. [2022-01-19 07:09:28,551 INFO L242 Difference]: Finished difference. Result has 962 places, 710 transitions, 16393 flow [2022-01-19 07:09:28,551 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16713, PETRI_DIFFERENCE_MINUEND_PLACES=926, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=735, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=16393, PETRI_PLACES=962, PETRI_TRANSITIONS=710} [2022-01-19 07:09:28,551 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 775 predicate places. [2022-01-19 07:09:28,551 INFO L470 AbstractCegarLoop]: Abstraction has has 962 places, 710 transitions, 16393 flow [2022-01-19 07:09:28,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:28,552 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:09:28,552 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:09:28,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2022-01-19 07:09:28,552 INFO L402 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:09:28,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:09:28,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1619313512, now seen corresponding path program 190 times [2022-01-19 07:09:28,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:09:28,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124599303] [2022-01-19 07:09:28,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:09:28,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:09:28,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:09:28,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:09:28,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:09:28,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124599303] [2022-01-19 07:09:28,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124599303] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:09:28,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:09:28,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:09:28,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805066214] [2022-01-19 07:09:28,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:09:28,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:09:28,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:09:28,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:09:28,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:09:28,651 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:09:28,652 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 962 places, 710 transitions, 16393 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:28,652 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:09:28,652 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:09:28,652 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:09:30,246 INFO L129 PetriNetUnfolder]: 871/3067 cut-off events. [2022-01-19 07:09:30,246 INFO L130 PetriNetUnfolder]: For 108573/108586 co-relation queries the response was YES. [2022-01-19 07:09:30,312 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24362 conditions, 3067 events. 871/3067 cut-off events. For 108573/108586 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 24532 event pairs, 393 based on Foata normal form. 1/2968 useless extension candidates. Maximal degree in co-relation 24007. Up to 870 conditions per place. [2022-01-19 07:09:30,322 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 418 selfloop transitions, 162 changer transitions 60/781 dead transitions. [2022-01-19 07:09:30,322 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 958 places, 781 transitions, 19231 flow [2022-01-19 07:09:30,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:09:30,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:09:30,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4809 transitions. [2022-01-19 07:09:30,325 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7633333333333333 [2022-01-19 07:09:30,325 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4809 transitions. [2022-01-19 07:09:30,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4809 transitions. [2022-01-19 07:09:30,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:09:30,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4809 transitions. [2022-01-19 07:09:30,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.3) internal successors, (4809), 30 states have internal predecessors, (4809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:30,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:30,331 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:30,331 INFO L186 Difference]: Start difference. First operand has 962 places, 710 transitions, 16393 flow. Second operand 30 states and 4809 transitions. [2022-01-19 07:09:30,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 958 places, 781 transitions, 19231 flow [2022-01-19 07:09:31,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 921 places, 781 transitions, 18142 flow, removed 33 selfloop flow, removed 37 redundant places. [2022-01-19 07:09:31,186 INFO L242 Difference]: Finished difference. Result has 933 places, 697 transitions, 15478 flow [2022-01-19 07:09:31,186 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15417, PETRI_DIFFERENCE_MINUEND_PLACES=892, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=15478, PETRI_PLACES=933, PETRI_TRANSITIONS=697} [2022-01-19 07:09:31,186 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 746 predicate places. [2022-01-19 07:09:31,186 INFO L470 AbstractCegarLoop]: Abstraction has has 933 places, 697 transitions, 15478 flow [2022-01-19 07:09:31,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:31,187 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:09:31,187 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:09:31,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2022-01-19 07:09:31,187 INFO L402 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:09:31,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:09:31,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1415123752, now seen corresponding path program 191 times [2022-01-19 07:09:31,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:09:31,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782358304] [2022-01-19 07:09:31,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:09:31,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:09:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:09:31,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:09:31,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:09:31,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782358304] [2022-01-19 07:09:31,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782358304] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:09:31,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:09:31,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:09:31,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839061925] [2022-01-19 07:09:31,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:09:31,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:09:31,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:09:31,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:09:31,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:09:31,291 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:09:31,291 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 933 places, 697 transitions, 15478 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:31,291 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:09:31,292 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:09:31,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:09:32,773 INFO L129 PetriNetUnfolder]: 846/2985 cut-off events. [2022-01-19 07:09:32,774 INFO L130 PetriNetUnfolder]: For 100417/100430 co-relation queries the response was YES. [2022-01-19 07:09:32,847 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23066 conditions, 2985 events. 846/2985 cut-off events. For 100417/100430 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 23641 event pairs, 387 based on Foata normal form. 1/2887 useless extension candidates. Maximal degree in co-relation 22721. Up to 864 conditions per place. [2022-01-19 07:09:32,857 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 402 selfloop transitions, 140 changer transitions 62/745 dead transitions. [2022-01-19 07:09:32,857 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 934 places, 745 transitions, 17445 flow [2022-01-19 07:09:32,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:09:32,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:09:32,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4643 transitions. [2022-01-19 07:09:32,859 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7623973727422003 [2022-01-19 07:09:32,859 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4643 transitions. [2022-01-19 07:09:32,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4643 transitions. [2022-01-19 07:09:32,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:09:32,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4643 transitions. [2022-01-19 07:09:32,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.10344827586206) internal successors, (4643), 29 states have internal predecessors, (4643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:32,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:32,865 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:32,865 INFO L186 Difference]: Start difference. First operand has 933 places, 697 transitions, 15478 flow. Second operand 29 states and 4643 transitions. [2022-01-19 07:09:32,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 934 places, 745 transitions, 17445 flow [2022-01-19 07:09:33,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 903 places, 745 transitions, 16940 flow, removed 28 selfloop flow, removed 31 redundant places. [2022-01-19 07:09:33,735 INFO L242 Difference]: Finished difference. Result has 910 places, 659 transitions, 14269 flow [2022-01-19 07:09:33,735 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15010, PETRI_DIFFERENCE_MINUEND_PLACES=875, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=14269, PETRI_PLACES=910, PETRI_TRANSITIONS=659} [2022-01-19 07:09:33,735 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 723 predicate places. [2022-01-19 07:09:33,735 INFO L470 AbstractCegarLoop]: Abstraction has has 910 places, 659 transitions, 14269 flow [2022-01-19 07:09:33,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:33,736 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:09:33,736 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:09:33,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2022-01-19 07:09:33,736 INFO L402 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:09:33,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:09:33,736 INFO L85 PathProgramCache]: Analyzing trace with hash 721873112, now seen corresponding path program 192 times [2022-01-19 07:09:33,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:09:33,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797219249] [2022-01-19 07:09:33,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:09:33,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:09:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:09:33,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:09:33,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:09:33,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797219249] [2022-01-19 07:09:33,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797219249] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:09:33,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:09:33,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:09:33,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754358618] [2022-01-19 07:09:33,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:09:33,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:09:33,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:09:33,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:09:33,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:09:33,833 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:09:33,834 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 910 places, 659 transitions, 14269 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:33,834 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:09:33,834 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:09:33,834 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:09:35,426 INFO L129 PetriNetUnfolder]: 884/3087 cut-off events. [2022-01-19 07:09:35,426 INFO L130 PetriNetUnfolder]: For 100641/100654 co-relation queries the response was YES. [2022-01-19 07:09:35,490 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23977 conditions, 3087 events. 884/3087 cut-off events. For 100641/100654 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 24700 event pairs, 335 based on Foata normal form. 1/2998 useless extension candidates. Maximal degree in co-relation 23645. Up to 864 conditions per place. [2022-01-19 07:09:35,499 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 336 selfloop transitions, 282 changer transitions 76/835 dead transitions. [2022-01-19 07:09:35,499 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 903 places, 835 transitions, 20379 flow [2022-01-19 07:09:35,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:09:35,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:09:35,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6080 transitions. [2022-01-19 07:09:35,502 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2022-01-19 07:09:35,502 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6080 transitions. [2022-01-19 07:09:35,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6080 transitions. [2022-01-19 07:09:35,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:09:35,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6080 transitions. [2022-01-19 07:09:35,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.0) internal successors, (6080), 38 states have internal predecessors, (6080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:35,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:35,510 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:35,510 INFO L186 Difference]: Start difference. First operand has 910 places, 659 transitions, 14269 flow. Second operand 38 states and 6080 transitions. [2022-01-19 07:09:35,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 903 places, 835 transitions, 20379 flow [2022-01-19 07:09:36,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 867 places, 835 transitions, 19582 flow, removed 28 selfloop flow, removed 36 redundant places. [2022-01-19 07:09:36,366 INFO L242 Difference]: Finished difference. Result has 892 places, 683 transitions, 15049 flow [2022-01-19 07:09:36,366 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13579, PETRI_DIFFERENCE_MINUEND_PLACES=830, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=260, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=15049, PETRI_PLACES=892, PETRI_TRANSITIONS=683} [2022-01-19 07:09:36,366 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 705 predicate places. [2022-01-19 07:09:36,367 INFO L470 AbstractCegarLoop]: Abstraction has has 892 places, 683 transitions, 15049 flow [2022-01-19 07:09:36,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:36,367 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:09:36,367 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:09:36,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2022-01-19 07:09:36,367 INFO L402 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:09:36,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:09:36,367 INFO L85 PathProgramCache]: Analyzing trace with hash 581310738, now seen corresponding path program 193 times [2022-01-19 07:09:36,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:09:36,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998372137] [2022-01-19 07:09:36,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:09:36,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:09:36,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:09:36,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:09:36,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:09:36,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998372137] [2022-01-19 07:09:36,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998372137] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:09:36,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:09:36,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:09:36,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543035379] [2022-01-19 07:09:36,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:09:36,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:09:36,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:09:36,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:09:36,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:09:36,475 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:09:36,475 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 892 places, 683 transitions, 15049 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:36,475 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:09:36,475 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:09:36,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:09:37,944 INFO L129 PetriNetUnfolder]: 886/3095 cut-off events. [2022-01-19 07:09:37,944 INFO L130 PetriNetUnfolder]: For 103717/103730 co-relation queries the response was YES. [2022-01-19 07:09:38,019 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24195 conditions, 3095 events. 886/3095 cut-off events. For 103717/103730 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 24718 event pairs, 398 based on Foata normal form. 1/2994 useless extension candidates. Maximal degree in co-relation 23861. Up to 864 conditions per place. [2022-01-19 07:09:38,031 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 408 selfloop transitions, 174 changer transitions 54/777 dead transitions. [2022-01-19 07:09:38,031 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 896 places, 777 transitions, 18641 flow [2022-01-19 07:09:38,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:09:38,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:09:38,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4671 transitions. [2022-01-19 07:09:38,034 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7669950738916256 [2022-01-19 07:09:38,034 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4671 transitions. [2022-01-19 07:09:38,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4671 transitions. [2022-01-19 07:09:38,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:09:38,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4671 transitions. [2022-01-19 07:09:38,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 161.06896551724137) internal successors, (4671), 29 states have internal predecessors, (4671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:38,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:38,040 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:38,040 INFO L186 Difference]: Start difference. First operand has 892 places, 683 transitions, 15049 flow. Second operand 29 states and 4671 transitions. [2022-01-19 07:09:38,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 896 places, 777 transitions, 18641 flow [2022-01-19 07:09:38,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 878 places, 777 transitions, 18439 flow, removed 72 selfloop flow, removed 18 redundant places. [2022-01-19 07:09:38,887 INFO L242 Difference]: Finished difference. Result has 892 places, 695 transitions, 15637 flow [2022-01-19 07:09:38,887 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14880, PETRI_DIFFERENCE_MINUEND_PLACES=850, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=15637, PETRI_PLACES=892, PETRI_TRANSITIONS=695} [2022-01-19 07:09:38,887 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 705 predicate places. [2022-01-19 07:09:38,887 INFO L470 AbstractCegarLoop]: Abstraction has has 892 places, 695 transitions, 15637 flow [2022-01-19 07:09:38,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:38,888 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:09:38,888 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:09:38,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2022-01-19 07:09:38,888 INFO L402 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:09:38,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:09:38,888 INFO L85 PathProgramCache]: Analyzing trace with hash 773425324, now seen corresponding path program 194 times [2022-01-19 07:09:38,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:09:38,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57157712] [2022-01-19 07:09:38,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:09:38,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:09:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:09:38,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:09:38,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:09:38,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57157712] [2022-01-19 07:09:38,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57157712] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:09:38,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:09:38,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:09:38,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122444936] [2022-01-19 07:09:38,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:09:38,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:09:38,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:09:38,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:09:38,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:09:38,989 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:09:38,990 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 892 places, 695 transitions, 15637 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:38,990 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:09:38,990 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:09:38,990 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:09:40,512 INFO L129 PetriNetUnfolder]: 884/3098 cut-off events. [2022-01-19 07:09:40,512 INFO L130 PetriNetUnfolder]: For 107923/107936 co-relation queries the response was YES. [2022-01-19 07:09:40,593 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24436 conditions, 3098 events. 884/3098 cut-off events. For 107923/107936 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 24849 event pairs, 381 based on Foata normal form. 1/2998 useless extension candidates. Maximal degree in co-relation 24105. Up to 865 conditions per place. [2022-01-19 07:09:40,605 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 444 selfloop transitions, 144 changer transitions 57/786 dead transitions. [2022-01-19 07:09:40,605 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 905 places, 786 transitions, 19367 flow [2022-01-19 07:09:40,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 07:09:40,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 07:09:40,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4518 transitions. [2022-01-19 07:09:40,607 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7683673469387755 [2022-01-19 07:09:40,607 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4518 transitions. [2022-01-19 07:09:40,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4518 transitions. [2022-01-19 07:09:40,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:09:40,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4518 transitions. [2022-01-19 07:09:40,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 161.35714285714286) internal successors, (4518), 28 states have internal predecessors, (4518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:40,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:40,612 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:40,613 INFO L186 Difference]: Start difference. First operand has 892 places, 695 transitions, 15637 flow. Second operand 28 states and 4518 transitions. [2022-01-19 07:09:40,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 905 places, 786 transitions, 19367 flow [2022-01-19 07:09:41,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 892 places, 786 transitions, 18946 flow, removed 95 selfloop flow, removed 13 redundant places. [2022-01-19 07:09:41,466 INFO L242 Difference]: Finished difference. Result has 904 places, 703 transitions, 15859 flow [2022-01-19 07:09:41,466 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15260, PETRI_DIFFERENCE_MINUEND_PLACES=865, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=695, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=15859, PETRI_PLACES=904, PETRI_TRANSITIONS=703} [2022-01-19 07:09:41,467 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 717 predicate places. [2022-01-19 07:09:41,467 INFO L470 AbstractCegarLoop]: Abstraction has has 904 places, 703 transitions, 15859 flow [2022-01-19 07:09:41,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:41,467 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:09:41,467 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:09:41,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2022-01-19 07:09:41,467 INFO L402 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:09:41,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:09:41,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1767172388, now seen corresponding path program 195 times [2022-01-19 07:09:41,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:09:41,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006900643] [2022-01-19 07:09:41,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:09:41,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:09:41,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:09:41,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:09:41,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:09:41,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006900643] [2022-01-19 07:09:41,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006900643] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:09:41,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:09:41,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:09:41,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436800003] [2022-01-19 07:09:41,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:09:41,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:09:41,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:09:41,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:09:41,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:09:41,588 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:09:41,589 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 904 places, 703 transitions, 15859 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:41,589 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:09:41,589 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:09:41,589 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:09:43,081 INFO L129 PetriNetUnfolder]: 862/3022 cut-off events. [2022-01-19 07:09:43,081 INFO L130 PetriNetUnfolder]: For 105669/105682 co-relation queries the response was YES. [2022-01-19 07:09:43,161 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23844 conditions, 3022 events. 862/3022 cut-off events. For 105669/105682 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 23997 event pairs, 366 based on Foata normal form. 1/2922 useless extension candidates. Maximal degree in co-relation 23509. Up to 859 conditions per place. [2022-01-19 07:09:43,172 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 438 selfloop transitions, 126 changer transitions 60/765 dead transitions. [2022-01-19 07:09:43,172 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 920 places, 765 transitions, 18880 flow [2022-01-19 07:09:43,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:09:43,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:09:43,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4820 transitions. [2022-01-19 07:09:43,175 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.765079365079365 [2022-01-19 07:09:43,175 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4820 transitions. [2022-01-19 07:09:43,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4820 transitions. [2022-01-19 07:09:43,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:09:43,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4820 transitions. [2022-01-19 07:09:43,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.66666666666666) internal successors, (4820), 30 states have internal predecessors, (4820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:43,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:43,181 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:43,181 INFO L186 Difference]: Start difference. First operand has 904 places, 703 transitions, 15859 flow. Second operand 30 states and 4820 transitions. [2022-01-19 07:09:43,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 920 places, 765 transitions, 18880 flow [2022-01-19 07:09:44,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 903 places, 765 transitions, 18339 flow, removed 104 selfloop flow, removed 17 redundant places. [2022-01-19 07:09:44,025 INFO L242 Difference]: Finished difference. Result has 914 places, 680 transitions, 15047 flow [2022-01-19 07:09:44,026 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15392, PETRI_DIFFERENCE_MINUEND_PLACES=874, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=577, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=15047, PETRI_PLACES=914, PETRI_TRANSITIONS=680} [2022-01-19 07:09:44,026 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 727 predicate places. [2022-01-19 07:09:44,026 INFO L470 AbstractCegarLoop]: Abstraction has has 914 places, 680 transitions, 15047 flow [2022-01-19 07:09:44,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:44,026 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:09:44,026 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:09:44,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2022-01-19 07:09:44,026 INFO L402 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:09:44,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:09:44,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1904133590, now seen corresponding path program 196 times [2022-01-19 07:09:44,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:09:44,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603497180] [2022-01-19 07:09:44,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:09:44,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:09:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:09:44,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:09:44,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:09:44,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603497180] [2022-01-19 07:09:44,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603497180] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:09:44,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:09:44,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:09:44,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066444029] [2022-01-19 07:09:44,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:09:44,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:09:44,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:09:44,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:09:44,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:09:44,132 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:09:44,133 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 914 places, 680 transitions, 15047 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:44,133 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:09:44,133 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:09:44,133 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:09:45,608 INFO L129 PetriNetUnfolder]: 868/3042 cut-off events. [2022-01-19 07:09:45,608 INFO L130 PetriNetUnfolder]: For 102835/102848 co-relation queries the response was YES. [2022-01-19 07:09:45,686 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24205 conditions, 3042 events. 868/3042 cut-off events. For 102835/102848 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 24328 event pairs, 370 based on Foata normal form. 1/2941 useless extension candidates. Maximal degree in co-relation 23869. Up to 860 conditions per place. [2022-01-19 07:09:45,698 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 440 selfloop transitions, 140 changer transitions 55/776 dead transitions. [2022-01-19 07:09:45,698 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 907 places, 776 transitions, 19178 flow [2022-01-19 07:09:45,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:09:45,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:09:45,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4675 transitions. [2022-01-19 07:09:45,700 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7676518883415435 [2022-01-19 07:09:45,700 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4675 transitions. [2022-01-19 07:09:45,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4675 transitions. [2022-01-19 07:09:45,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:09:45,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4675 transitions. [2022-01-19 07:09:45,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 161.20689655172413) internal successors, (4675), 29 states have internal predecessors, (4675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:45,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:45,706 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:45,706 INFO L186 Difference]: Start difference. First operand has 914 places, 680 transitions, 15047 flow. Second operand 29 states and 4675 transitions. [2022-01-19 07:09:45,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 907 places, 776 transitions, 19178 flow [2022-01-19 07:09:46,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 877 places, 776 transitions, 18470 flow, removed 106 selfloop flow, removed 30 redundant places. [2022-01-19 07:09:46,575 INFO L242 Difference]: Finished difference. Result has 891 places, 697 transitions, 15543 flow [2022-01-19 07:09:46,575 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14601, PETRI_DIFFERENCE_MINUEND_PLACES=849, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=680, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=15543, PETRI_PLACES=891, PETRI_TRANSITIONS=697} [2022-01-19 07:09:46,575 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 704 predicate places. [2022-01-19 07:09:46,575 INFO L470 AbstractCegarLoop]: Abstraction has has 891 places, 697 transitions, 15543 flow [2022-01-19 07:09:46,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:46,576 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:09:46,576 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:09:46,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2022-01-19 07:09:46,576 INFO L402 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:09:46,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:09:46,576 INFO L85 PathProgramCache]: Analyzing trace with hash -761768068, now seen corresponding path program 197 times [2022-01-19 07:09:46,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:09:46,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692260789] [2022-01-19 07:09:46,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:09:46,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:09:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:09:46,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:09:46,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:09:46,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692260789] [2022-01-19 07:09:46,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692260789] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:09:46,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:09:46,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:09:46,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292905207] [2022-01-19 07:09:46,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:09:46,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:09:46,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:09:46,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:09:46,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:09:46,688 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:09:46,689 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 891 places, 697 transitions, 15543 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:46,689 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:09:46,689 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:09:46,689 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:09:48,203 INFO L129 PetriNetUnfolder]: 862/3044 cut-off events. [2022-01-19 07:09:48,203 INFO L130 PetriNetUnfolder]: For 101648/101661 co-relation queries the response was YES. [2022-01-19 07:09:48,275 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23624 conditions, 3044 events. 862/3044 cut-off events. For 101648/101661 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 24391 event pairs, 336 based on Foata normal form. 1/2948 useless extension candidates. Maximal degree in co-relation 23293. Up to 861 conditions per place. [2022-01-19 07:09:48,286 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 419 selfloop transitions, 171 changer transitions 58/789 dead transitions. [2022-01-19 07:09:48,286 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 903 places, 789 transitions, 19261 flow [2022-01-19 07:09:48,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 07:09:48,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 07:09:48,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4351 transitions. [2022-01-19 07:09:48,289 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7673721340388007 [2022-01-19 07:09:48,289 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4351 transitions. [2022-01-19 07:09:48,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4351 transitions. [2022-01-19 07:09:48,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:09:48,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4351 transitions. [2022-01-19 07:09:48,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 161.14814814814815) internal successors, (4351), 27 states have internal predecessors, (4351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:48,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:48,294 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:48,294 INFO L186 Difference]: Start difference. First operand has 891 places, 697 transitions, 15543 flow. Second operand 27 states and 4351 transitions. [2022-01-19 07:09:48,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 903 places, 789 transitions, 19261 flow [2022-01-19 07:09:49,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 890 places, 789 transitions, 18693 flow, removed 195 selfloop flow, removed 13 redundant places. [2022-01-19 07:09:49,118 INFO L242 Difference]: Finished difference. Result has 900 places, 701 transitions, 15667 flow [2022-01-19 07:09:49,118 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15146, PETRI_DIFFERENCE_MINUEND_PLACES=864, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=15667, PETRI_PLACES=900, PETRI_TRANSITIONS=701} [2022-01-19 07:09:49,118 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 713 predicate places. [2022-01-19 07:09:49,118 INFO L470 AbstractCegarLoop]: Abstraction has has 900 places, 701 transitions, 15667 flow [2022-01-19 07:09:49,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:49,119 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:09:49,119 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:09:49,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2022-01-19 07:09:49,119 INFO L402 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:09:49,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:09:49,119 INFO L85 PathProgramCache]: Analyzing trace with hash 2104717412, now seen corresponding path program 198 times [2022-01-19 07:09:49,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:09:49,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752545344] [2022-01-19 07:09:49,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:09:49,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:09:49,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:09:49,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:09:49,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:09:49,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752545344] [2022-01-19 07:09:49,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752545344] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:09:49,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:09:49,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:09:49,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284387933] [2022-01-19 07:09:49,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:09:49,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:09:49,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:09:49,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:09:49,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:09:49,226 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:09:49,227 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 900 places, 701 transitions, 15667 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:49,227 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:09:49,227 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:09:49,227 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:09:50,674 INFO L129 PetriNetUnfolder]: 860/3032 cut-off events. [2022-01-19 07:09:50,674 INFO L130 PetriNetUnfolder]: For 97572/97585 co-relation queries the response was YES. [2022-01-19 07:09:50,758 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23576 conditions, 3032 events. 860/3032 cut-off events. For 97572/97585 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 24189 event pairs, 383 based on Foata normal form. 1/2929 useless extension candidates. Maximal degree in co-relation 23243. Up to 858 conditions per place. [2022-01-19 07:09:50,769 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 448 selfloop transitions, 142 changer transitions 55/786 dead transitions. [2022-01-19 07:09:50,769 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 917 places, 786 transitions, 19254 flow [2022-01-19 07:09:50,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:09:50,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:09:50,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4831 transitions. [2022-01-19 07:09:50,771 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7668253968253969 [2022-01-19 07:09:50,772 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4831 transitions. [2022-01-19 07:09:50,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4831 transitions. [2022-01-19 07:09:50,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:09:50,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4831 transitions. [2022-01-19 07:09:50,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 161.03333333333333) internal successors, (4831), 30 states have internal predecessors, (4831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:50,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:50,777 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:50,778 INFO L186 Difference]: Start difference. First operand has 900 places, 701 transitions, 15667 flow. Second operand 30 states and 4831 transitions. [2022-01-19 07:09:50,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 917 places, 786 transitions, 19254 flow [2022-01-19 07:09:51,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 898 places, 786 transitions, 18662 flow, removed 93 selfloop flow, removed 19 redundant places. [2022-01-19 07:09:51,582 INFO L242 Difference]: Finished difference. Result has 911 places, 709 transitions, 15706 flow [2022-01-19 07:09:51,583 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15150, PETRI_DIFFERENCE_MINUEND_PLACES=869, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=15706, PETRI_PLACES=911, PETRI_TRANSITIONS=709} [2022-01-19 07:09:51,583 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 724 predicate places. [2022-01-19 07:09:51,583 INFO L470 AbstractCegarLoop]: Abstraction has has 911 places, 709 transitions, 15706 flow [2022-01-19 07:09:51,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:51,583 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:09:51,583 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:09:51,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2022-01-19 07:09:51,583 INFO L402 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:09:51,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:09:51,584 INFO L85 PathProgramCache]: Analyzing trace with hash 264895692, now seen corresponding path program 199 times [2022-01-19 07:09:51,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:09:51,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796660082] [2022-01-19 07:09:51,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:09:51,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:09:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:09:51,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:09:51,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:09:51,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796660082] [2022-01-19 07:09:51,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796660082] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:09:51,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:09:51,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:09:51,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176296814] [2022-01-19 07:09:51,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:09:51,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:09:51,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:09:51,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:09:51,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:09:51,684 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:09:51,685 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 911 places, 709 transitions, 15706 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:51,685 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:09:51,685 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:09:51,685 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:09:53,111 INFO L129 PetriNetUnfolder]: 830/2949 cut-off events. [2022-01-19 07:09:53,111 INFO L130 PetriNetUnfolder]: For 91758/91771 co-relation queries the response was YES. [2022-01-19 07:09:53,184 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22394 conditions, 2949 events. 830/2949 cut-off events. For 91758/91771 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 23355 event pairs, 335 based on Foata normal form. 1/2851 useless extension candidates. Maximal degree in co-relation 22058. Up to 851 conditions per place. [2022-01-19 07:09:53,194 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 414 selfloop transitions, 150 changer transitions 62/767 dead transitions. [2022-01-19 07:09:53,194 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 925 places, 767 transitions, 18465 flow [2022-01-19 07:09:53,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:09:53,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:09:53,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4809 transitions. [2022-01-19 07:09:53,196 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7633333333333333 [2022-01-19 07:09:53,196 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4809 transitions. [2022-01-19 07:09:53,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4809 transitions. [2022-01-19 07:09:53,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:09:53,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4809 transitions. [2022-01-19 07:09:53,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.3) internal successors, (4809), 30 states have internal predecessors, (4809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:53,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:53,202 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:53,202 INFO L186 Difference]: Start difference. First operand has 911 places, 709 transitions, 15706 flow. Second operand 30 states and 4809 transitions. [2022-01-19 07:09:53,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 925 places, 767 transitions, 18465 flow [2022-01-19 07:09:53,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 911 places, 767 transitions, 18060 flow, removed 121 selfloop flow, removed 14 redundant places. [2022-01-19 07:09:53,965 INFO L242 Difference]: Finished difference. Result has 922 places, 678 transitions, 14855 flow [2022-01-19 07:09:53,965 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15412, PETRI_DIFFERENCE_MINUEND_PLACES=882, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=709, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=559, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=14855, PETRI_PLACES=922, PETRI_TRANSITIONS=678} [2022-01-19 07:09:53,966 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 735 predicate places. [2022-01-19 07:09:53,966 INFO L470 AbstractCegarLoop]: Abstraction has has 922 places, 678 transitions, 14855 flow [2022-01-19 07:09:53,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:53,966 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:09:53,966 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:09:53,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2022-01-19 07:09:53,966 INFO L402 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:09:53,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:09:53,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1294553486, now seen corresponding path program 200 times [2022-01-19 07:09:53,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:09:53,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800445777] [2022-01-19 07:09:53,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:09:53,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:09:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:09:54,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:09:54,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:09:54,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800445777] [2022-01-19 07:09:54,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800445777] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:09:54,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:09:54,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:09:54,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872999501] [2022-01-19 07:09:54,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:09:54,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:09:54,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:09:54,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:09:54,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:09:54,064 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:09:54,065 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 922 places, 678 transitions, 14855 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:54,065 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:09:54,065 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:09:54,065 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:09:55,721 INFO L129 PetriNetUnfolder]: 868/3070 cut-off events. [2022-01-19 07:09:55,722 INFO L130 PetriNetUnfolder]: For 94489/94502 co-relation queries the response was YES. [2022-01-19 07:09:55,798 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23563 conditions, 3070 events. 868/3070 cut-off events. For 94489/94502 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 24687 event pairs, 373 based on Foata normal form. 1/2970 useless extension candidates. Maximal degree in co-relation 23226. Up to 851 conditions per place. [2022-01-19 07:09:55,809 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 365 selfloop transitions, 235 changer transitions 77/818 dead transitions. [2022-01-19 07:09:55,809 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 925 places, 818 transitions, 19878 flow [2022-01-19 07:09:55,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 07:09:55,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 07:09:55,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7187 transitions. [2022-01-19 07:09:55,812 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7605291005291005 [2022-01-19 07:09:55,812 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7187 transitions. [2022-01-19 07:09:55,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7187 transitions. [2022-01-19 07:09:55,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:09:55,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7187 transitions. [2022-01-19 07:09:55,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.7111111111111) internal successors, (7187), 45 states have internal predecessors, (7187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:55,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:55,821 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:55,821 INFO L186 Difference]: Start difference. First operand has 922 places, 678 transitions, 14855 flow. Second operand 45 states and 7187 transitions. [2022-01-19 07:09:55,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 925 places, 818 transitions, 19878 flow [2022-01-19 07:09:56,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 891 places, 818 transitions, 18936 flow, removed 43 selfloop flow, removed 34 redundant places. [2022-01-19 07:09:56,561 INFO L242 Difference]: Finished difference. Result has 925 places, 703 transitions, 15578 flow [2022-01-19 07:09:56,562 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14176, PETRI_DIFFERENCE_MINUEND_PLACES=847, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=15578, PETRI_PLACES=925, PETRI_TRANSITIONS=703} [2022-01-19 07:09:56,562 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 738 predicate places. [2022-01-19 07:09:56,562 INFO L470 AbstractCegarLoop]: Abstraction has has 925 places, 703 transitions, 15578 flow [2022-01-19 07:09:56,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:56,562 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:09:56,562 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:09:56,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2022-01-19 07:09:56,562 INFO L402 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:09:56,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:09:56,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1194645428, now seen corresponding path program 201 times [2022-01-19 07:09:56,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:09:56,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074089506] [2022-01-19 07:09:56,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:09:56,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:09:56,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:09:56,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:09:56,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:09:56,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074089506] [2022-01-19 07:09:56,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074089506] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:09:56,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:09:56,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:09:56,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623693148] [2022-01-19 07:09:56,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:09:56,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:09:56,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:09:56,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:09:56,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:09:56,665 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:09:56,666 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 925 places, 703 transitions, 15578 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:56,666 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:09:56,666 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:09:56,666 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:09:58,331 INFO L129 PetriNetUnfolder]: 893/3129 cut-off events. [2022-01-19 07:09:58,332 INFO L130 PetriNetUnfolder]: For 90641/90654 co-relation queries the response was YES. [2022-01-19 07:09:58,533 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24144 conditions, 3129 events. 893/3129 cut-off events. For 90641/90654 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 25222 event pairs, 373 based on Foata normal form. 1/3026 useless extension candidates. Maximal degree in co-relation 23795. Up to 851 conditions per place. [2022-01-19 07:09:58,544 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 450 selfloop transitions, 177 changer transitions 70/838 dead transitions. [2022-01-19 07:09:58,544 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 930 places, 838 transitions, 20372 flow [2022-01-19 07:09:58,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:09:58,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:09:58,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6090 transitions. [2022-01-19 07:09:58,548 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7631578947368421 [2022-01-19 07:09:58,548 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6090 transitions. [2022-01-19 07:09:58,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6090 transitions. [2022-01-19 07:09:58,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:09:58,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6090 transitions. [2022-01-19 07:09:58,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.26315789473685) internal successors, (6090), 38 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:58,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:58,558 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:58,558 INFO L186 Difference]: Start difference. First operand has 925 places, 703 transitions, 15578 flow. Second operand 38 states and 6090 transitions. [2022-01-19 07:09:58,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 930 places, 838 transitions, 20372 flow [2022-01-19 07:09:59,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 900 places, 838 transitions, 19800 flow, removed 99 selfloop flow, removed 30 redundant places. [2022-01-19 07:09:59,400 INFO L242 Difference]: Finished difference. Result has 924 places, 728 transitions, 16515 flow [2022-01-19 07:09:59,400 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15128, PETRI_DIFFERENCE_MINUEND_PLACES=863, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=16515, PETRI_PLACES=924, PETRI_TRANSITIONS=728} [2022-01-19 07:09:59,400 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 737 predicate places. [2022-01-19 07:09:59,400 INFO L470 AbstractCegarLoop]: Abstraction has has 924 places, 728 transitions, 16515 flow [2022-01-19 07:09:59,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:59,401 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:09:59,401 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:09:59,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2022-01-19 07:09:59,401 INFO L402 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:09:59,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:09:59,401 INFO L85 PathProgramCache]: Analyzing trace with hash 973494486, now seen corresponding path program 202 times [2022-01-19 07:09:59,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:09:59,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293824385] [2022-01-19 07:09:59,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:09:59,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:09:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:09:59,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:09:59,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:09:59,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293824385] [2022-01-19 07:09:59,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293824385] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:09:59,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:09:59,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:09:59,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775538689] [2022-01-19 07:09:59,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:09:59,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:09:59,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:09:59,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:09:59,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:09:59,505 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:09:59,506 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 924 places, 728 transitions, 16515 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:09:59,506 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:09:59,506 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:09:59,506 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:10:01,232 INFO L129 PetriNetUnfolder]: 917/3203 cut-off events. [2022-01-19 07:10:01,233 INFO L130 PetriNetUnfolder]: For 89128/89141 co-relation queries the response was YES. [2022-01-19 07:10:01,312 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24880 conditions, 3203 events. 917/3203 cut-off events. For 89128/89141 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 26002 event pairs, 386 based on Foata normal form. 1/3098 useless extension candidates. Maximal degree in co-relation 24533. Up to 851 conditions per place. [2022-01-19 07:10:01,324 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 379 selfloop transitions, 258 changer transitions 66/844 dead transitions. [2022-01-19 07:10:01,324 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 937 places, 844 transitions, 20682 flow [2022-01-19 07:10:01,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:10:01,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:10:01,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6085 transitions. [2022-01-19 07:10:01,327 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625313283208021 [2022-01-19 07:10:01,327 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6085 transitions. [2022-01-19 07:10:01,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6085 transitions. [2022-01-19 07:10:01,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:10:01,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6085 transitions. [2022-01-19 07:10:01,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.1315789473684) internal successors, (6085), 38 states have internal predecessors, (6085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:01,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:01,335 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:01,335 INFO L186 Difference]: Start difference. First operand has 924 places, 728 transitions, 16515 flow. Second operand 38 states and 6085 transitions. [2022-01-19 07:10:01,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 937 places, 844 transitions, 20682 flow [2022-01-19 07:10:02,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 917 places, 844 transitions, 20279 flow, removed 105 selfloop flow, removed 20 redundant places. [2022-01-19 07:10:02,230 INFO L242 Difference]: Finished difference. Result has 941 places, 747 transitions, 17351 flow [2022-01-19 07:10:02,231 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16158, PETRI_DIFFERENCE_MINUEND_PLACES=880, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=728, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=17351, PETRI_PLACES=941, PETRI_TRANSITIONS=747} [2022-01-19 07:10:02,231 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 754 predicate places. [2022-01-19 07:10:02,231 INFO L470 AbstractCegarLoop]: Abstraction has has 941 places, 747 transitions, 17351 flow [2022-01-19 07:10:02,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:02,231 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:10:02,231 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:10:02,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2022-01-19 07:10:02,231 INFO L402 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:10:02,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:10:02,232 INFO L85 PathProgramCache]: Analyzing trace with hash -9369330, now seen corresponding path program 203 times [2022-01-19 07:10:02,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:10:02,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232174523] [2022-01-19 07:10:02,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:10:02,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:10:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:10:02,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:10:02,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:10:02,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232174523] [2022-01-19 07:10:02,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232174523] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:10:02,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:10:02,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:10:02,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657524442] [2022-01-19 07:10:02,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:10:02,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:10:02,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:10:02,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:10:02,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:10:02,335 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:10:02,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 941 places, 747 transitions, 17351 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:02,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:10:02,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:10:02,335 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:10:04,020 INFO L129 PetriNetUnfolder]: 918/3189 cut-off events. [2022-01-19 07:10:04,020 INFO L130 PetriNetUnfolder]: For 86450/86463 co-relation queries the response was YES. [2022-01-19 07:10:04,095 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24986 conditions, 3189 events. 918/3189 cut-off events. For 86450/86463 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 25860 event pairs, 372 based on Foata normal form. 1/3083 useless extension candidates. Maximal degree in co-relation 24632. Up to 852 conditions per place. [2022-01-19 07:10:04,109 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 373 selfloop transitions, 271 changer transitions 59/844 dead transitions. [2022-01-19 07:10:04,109 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 945 places, 844 transitions, 21058 flow [2022-01-19 07:10:04,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:10:04,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:10:04,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4663 transitions. [2022-01-19 07:10:04,111 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7656814449917898 [2022-01-19 07:10:04,111 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4663 transitions. [2022-01-19 07:10:04,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4663 transitions. [2022-01-19 07:10:04,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:10:04,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4663 transitions. [2022-01-19 07:10:04,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.79310344827587) internal successors, (4663), 29 states have internal predecessors, (4663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:04,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:04,119 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:04,119 INFO L186 Difference]: Start difference. First operand has 941 places, 747 transitions, 17351 flow. Second operand 29 states and 4663 transitions. [2022-01-19 07:10:04,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 945 places, 844 transitions, 21058 flow [2022-01-19 07:10:04,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 925 places, 844 transitions, 20632 flow, removed 101 selfloop flow, removed 20 redundant places. [2022-01-19 07:10:04,965 INFO L242 Difference]: Finished difference. Result has 939 places, 759 transitions, 17914 flow [2022-01-19 07:10:04,965 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17022, PETRI_DIFFERENCE_MINUEND_PLACES=897, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=17914, PETRI_PLACES=939, PETRI_TRANSITIONS=759} [2022-01-19 07:10:04,965 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 752 predicate places. [2022-01-19 07:10:04,965 INFO L470 AbstractCegarLoop]: Abstraction has has 939 places, 759 transitions, 17914 flow [2022-01-19 07:10:04,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:04,966 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:10:04,966 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:10:04,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2022-01-19 07:10:04,966 INFO L402 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:10:04,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:10:04,966 INFO L85 PathProgramCache]: Analyzing trace with hash -196555810, now seen corresponding path program 204 times [2022-01-19 07:10:04,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:10:04,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980082407] [2022-01-19 07:10:04,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:10:04,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:10:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:10:05,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:10:05,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:10:05,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980082407] [2022-01-19 07:10:05,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980082407] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:10:05,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:10:05,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:10:05,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575076618] [2022-01-19 07:10:05,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:10:05,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:10:05,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:10:05,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:10:05,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:10:05,064 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:10:05,065 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 939 places, 759 transitions, 17914 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:05,065 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:10:05,065 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:10:05,065 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:10:06,825 INFO L129 PetriNetUnfolder]: 952/3297 cut-off events. [2022-01-19 07:10:06,825 INFO L130 PetriNetUnfolder]: For 90391/90404 co-relation queries the response was YES. [2022-01-19 07:10:06,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26215 conditions, 3297 events. 952/3297 cut-off events. For 90391/90404 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 26912 event pairs, 369 based on Foata normal form. 1/3191 useless extension candidates. Maximal degree in co-relation 25864. Up to 853 conditions per place. [2022-01-19 07:10:06,933 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 480 selfloop transitions, 203 changer transitions 69/893 dead transitions. [2022-01-19 07:10:06,934 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 962 places, 893 transitions, 22945 flow [2022-01-19 07:10:06,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:10:06,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:10:06,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6088 transitions. [2022-01-19 07:10:06,945 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7629072681704261 [2022-01-19 07:10:06,945 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6088 transitions. [2022-01-19 07:10:06,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6088 transitions. [2022-01-19 07:10:06,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:10:06,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6088 transitions. [2022-01-19 07:10:06,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.21052631578948) internal successors, (6088), 38 states have internal predecessors, (6088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:06,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:06,955 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:06,955 INFO L186 Difference]: Start difference. First operand has 939 places, 759 transitions, 17914 flow. Second operand 38 states and 6088 transitions. [2022-01-19 07:10:06,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 962 places, 893 transitions, 22945 flow [2022-01-19 07:10:07,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 949 places, 893 transitions, 22561 flow, removed 51 selfloop flow, removed 13 redundant places. [2022-01-19 07:10:07,888 INFO L242 Difference]: Finished difference. Result has 973 places, 784 transitions, 19069 flow [2022-01-19 07:10:07,888 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17584, PETRI_DIFFERENCE_MINUEND_PLACES=912, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=759, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=19069, PETRI_PLACES=973, PETRI_TRANSITIONS=784} [2022-01-19 07:10:07,889 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 786 predicate places. [2022-01-19 07:10:07,889 INFO L470 AbstractCegarLoop]: Abstraction has has 973 places, 784 transitions, 19069 flow [2022-01-19 07:10:07,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:07,889 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:10:07,889 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:10:07,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2022-01-19 07:10:07,889 INFO L402 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:10:07,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:10:07,890 INFO L85 PathProgramCache]: Analyzing trace with hash -274224380, now seen corresponding path program 205 times [2022-01-19 07:10:07,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:10:07,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319012518] [2022-01-19 07:10:07,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:10:07,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:10:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:10:07,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:10:07,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:10:07,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319012518] [2022-01-19 07:10:07,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319012518] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:10:07,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:10:07,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:10:07,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849142726] [2022-01-19 07:10:07,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:10:07,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:10:07,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:10:07,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:10:07,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:10:07,992 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:10:07,992 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 973 places, 784 transitions, 19069 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:07,992 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:10:07,992 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:10:07,992 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:10:09,764 INFO L129 PetriNetUnfolder]: 968/3360 cut-off events. [2022-01-19 07:10:09,765 INFO L130 PetriNetUnfolder]: For 97212/97225 co-relation queries the response was YES. [2022-01-19 07:10:09,864 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27147 conditions, 3360 events. 968/3360 cut-off events. For 97212/97225 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 27732 event pairs, 399 based on Foata normal form. 1/3250 useless extension candidates. Maximal degree in co-relation 26780. Up to 853 conditions per place. [2022-01-19 07:10:09,878 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 501 selfloop transitions, 187 changer transitions 67/896 dead transitions. [2022-01-19 07:10:09,878 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 985 places, 896 transitions, 23363 flow [2022-01-19 07:10:09,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 07:10:09,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 07:10:09,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5935 transitions. [2022-01-19 07:10:09,880 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7638352638352638 [2022-01-19 07:10:09,880 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5935 transitions. [2022-01-19 07:10:09,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5935 transitions. [2022-01-19 07:10:09,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:10:09,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5935 transitions. [2022-01-19 07:10:09,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.40540540540542) internal successors, (5935), 37 states have internal predecessors, (5935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:09,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:09,888 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:09,888 INFO L186 Difference]: Start difference. First operand has 973 places, 784 transitions, 19069 flow. Second operand 37 states and 5935 transitions. [2022-01-19 07:10:09,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 985 places, 896 transitions, 23363 flow [2022-01-19 07:10:10,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 967 places, 896 transitions, 22971 flow, removed 117 selfloop flow, removed 18 redundant places. [2022-01-19 07:10:10,933 INFO L242 Difference]: Finished difference. Result has 990 places, 801 transitions, 19769 flow [2022-01-19 07:10:10,933 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18726, PETRI_DIFFERENCE_MINUEND_PLACES=931, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=784, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=19769, PETRI_PLACES=990, PETRI_TRANSITIONS=801} [2022-01-19 07:10:10,933 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 803 predicate places. [2022-01-19 07:10:10,933 INFO L470 AbstractCegarLoop]: Abstraction has has 990 places, 801 transitions, 19769 flow [2022-01-19 07:10:10,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:10,934 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:10:10,934 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:10:10,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2022-01-19 07:10:10,934 INFO L402 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:10:10,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:10:10,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1883768268, now seen corresponding path program 206 times [2022-01-19 07:10:10,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:10:10,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059696764] [2022-01-19 07:10:10,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:10:10,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:10:10,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:10:11,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:10:11,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:10:11,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059696764] [2022-01-19 07:10:11,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059696764] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:10:11,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:10:11,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:10:11,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811900152] [2022-01-19 07:10:11,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:10:11,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:10:11,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:10:11,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:10:11,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:10:11,033 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:10:11,034 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 990 places, 801 transitions, 19769 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:11,034 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:10:11,034 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:10:11,034 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:10:13,019 INFO L129 PetriNetUnfolder]: 983/3400 cut-off events. [2022-01-19 07:10:13,019 INFO L130 PetriNetUnfolder]: For 96917/96930 co-relation queries the response was YES. [2022-01-19 07:10:13,101 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27738 conditions, 3400 events. 983/3400 cut-off events. For 96917/96930 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 28025 event pairs, 400 based on Foata normal form. 1/3288 useless extension candidates. Maximal degree in co-relation 27364. Up to 854 conditions per place. [2022-01-19 07:10:13,113 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 485 selfloop transitions, 222 changer transitions 66/914 dead transitions. [2022-01-19 07:10:13,113 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1003 places, 914 transitions, 24255 flow [2022-01-19 07:10:13,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 07:10:13,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 07:10:13,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5933 transitions. [2022-01-19 07:10:13,115 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7635778635778636 [2022-01-19 07:10:13,115 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5933 transitions. [2022-01-19 07:10:13,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5933 transitions. [2022-01-19 07:10:13,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:10:13,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5933 transitions. [2022-01-19 07:10:13,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.35135135135135) internal successors, (5933), 37 states have internal predecessors, (5933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:13,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:13,123 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:13,123 INFO L186 Difference]: Start difference. First operand has 990 places, 801 transitions, 19769 flow. Second operand 37 states and 5933 transitions. [2022-01-19 07:10:13,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1003 places, 914 transitions, 24255 flow [2022-01-19 07:10:14,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 983 places, 914 transitions, 23808 flow, removed 90 selfloop flow, removed 20 redundant places. [2022-01-19 07:10:14,146 INFO L242 Difference]: Finished difference. Result has 1007 places, 819 transitions, 20554 flow [2022-01-19 07:10:14,146 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=19380, PETRI_DIFFERENCE_MINUEND_PLACES=947, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=801, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=20554, PETRI_PLACES=1007, PETRI_TRANSITIONS=819} [2022-01-19 07:10:14,146 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 820 predicate places. [2022-01-19 07:10:14,147 INFO L470 AbstractCegarLoop]: Abstraction has has 1007 places, 819 transitions, 20554 flow [2022-01-19 07:10:14,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:14,147 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:10:14,147 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:10:14,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2022-01-19 07:10:14,147 INFO L402 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:10:14,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:10:14,147 INFO L85 PathProgramCache]: Analyzing trace with hash -2087182256, now seen corresponding path program 207 times [2022-01-19 07:10:14,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:10:14,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459626546] [2022-01-19 07:10:14,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:10:14,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:10:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:10:14,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:10:14,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:10:14,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459626546] [2022-01-19 07:10:14,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459626546] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:10:14,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:10:14,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:10:14,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869268201] [2022-01-19 07:10:14,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:10:14,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:10:14,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:10:14,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:10:14,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:10:14,247 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:10:14,248 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1007 places, 819 transitions, 20554 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:14,248 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:10:14,248 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:10:14,248 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:10:16,326 INFO L129 PetriNetUnfolder]: 974/3422 cut-off events. [2022-01-19 07:10:16,326 INFO L130 PetriNetUnfolder]: For 101997/102010 co-relation queries the response was YES. [2022-01-19 07:10:16,417 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27879 conditions, 3422 events. 974/3422 cut-off events. For 101997/102010 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 28564 event pairs, 357 based on Foata normal form. 1/3320 useless extension candidates. Maximal degree in co-relation 27497. Up to 853 conditions per place. [2022-01-19 07:10:16,431 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 378 selfloop transitions, 349 changer transitions 86/954 dead transitions. [2022-01-19 07:10:16,431 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1029 places, 954 transitions, 25702 flow [2022-01-19 07:10:16,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 07:10:16,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 07:10:16,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7336 transitions. [2022-01-19 07:10:16,434 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7594202898550725 [2022-01-19 07:10:16,434 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7336 transitions. [2022-01-19 07:10:16,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7336 transitions. [2022-01-19 07:10:16,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:10:16,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7336 transitions. [2022-01-19 07:10:16,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.47826086956522) internal successors, (7336), 46 states have internal predecessors, (7336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:16,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:16,443 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:16,443 INFO L186 Difference]: Start difference. First operand has 1007 places, 819 transitions, 20554 flow. Second operand 46 states and 7336 transitions. [2022-01-19 07:10:16,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1029 places, 954 transitions, 25702 flow [2022-01-19 07:10:17,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1008 places, 954 transitions, 25219 flow, removed 117 selfloop flow, removed 21 redundant places. [2022-01-19 07:10:17,723 INFO L242 Difference]: Finished difference. Result has 1040 places, 820 transitions, 21154 flow [2022-01-19 07:10:17,723 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=20147, PETRI_DIFFERENCE_MINUEND_PLACES=963, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=819, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=342, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=21154, PETRI_PLACES=1040, PETRI_TRANSITIONS=820} [2022-01-19 07:10:17,724 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 853 predicate places. [2022-01-19 07:10:17,724 INFO L470 AbstractCegarLoop]: Abstraction has has 1040 places, 820 transitions, 21154 flow [2022-01-19 07:10:17,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:17,724 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:10:17,724 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:10:17,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2022-01-19 07:10:17,724 INFO L402 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:10:17,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:10:17,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1748549088, now seen corresponding path program 208 times [2022-01-19 07:10:17,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:10:17,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783084360] [2022-01-19 07:10:17,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:10:17,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:10:17,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:10:17,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:10:17,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:10:17,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783084360] [2022-01-19 07:10:17,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783084360] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:10:17,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:10:17,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:10:17,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060258865] [2022-01-19 07:10:17,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:10:17,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:10:17,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:10:17,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:10:17,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:10:17,832 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:10:17,833 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1040 places, 820 transitions, 21154 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:17,833 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:10:17,833 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:10:17,833 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:10:19,727 INFO L129 PetriNetUnfolder]: 961/3370 cut-off events. [2022-01-19 07:10:19,727 INFO L130 PetriNetUnfolder]: For 103498/103511 co-relation queries the response was YES. [2022-01-19 07:10:19,833 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27772 conditions, 3370 events. 961/3370 cut-off events. For 103498/103511 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 27921 event pairs, 376 based on Foata normal form. 1/3260 useless extension candidates. Maximal degree in co-relation 27375. Up to 853 conditions per place. [2022-01-19 07:10:19,846 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 509 selfloop transitions, 206 changer transitions 59/915 dead transitions. [2022-01-19 07:10:19,846 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1034 places, 915 transitions, 25249 flow [2022-01-19 07:10:19,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 07:10:19,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 07:10:19,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4514 transitions. [2022-01-19 07:10:19,849 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7676870748299319 [2022-01-19 07:10:19,849 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4514 transitions. [2022-01-19 07:10:19,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4514 transitions. [2022-01-19 07:10:19,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:10:19,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4514 transitions. [2022-01-19 07:10:19,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 161.21428571428572) internal successors, (4514), 28 states have internal predecessors, (4514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:19,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:19,855 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:19,855 INFO L186 Difference]: Start difference. First operand has 1040 places, 820 transitions, 21154 flow. Second operand 28 states and 4514 transitions. [2022-01-19 07:10:19,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1034 places, 915 transitions, 25249 flow [2022-01-19 07:10:20,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1002 places, 915 transitions, 24858 flow, removed 74 selfloop flow, removed 32 redundant places. [2022-01-19 07:10:20,977 INFO L242 Difference]: Finished difference. Result has 1014 places, 828 transitions, 21519 flow [2022-01-19 07:10:20,978 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=20834, PETRI_DIFFERENCE_MINUEND_PLACES=975, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=820, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=619, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=21519, PETRI_PLACES=1014, PETRI_TRANSITIONS=828} [2022-01-19 07:10:20,978 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 827 predicate places. [2022-01-19 07:10:20,978 INFO L470 AbstractCegarLoop]: Abstraction has has 1014 places, 828 transitions, 21519 flow [2022-01-19 07:10:20,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:20,978 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:10:20,979 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:10:20,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2022-01-19 07:10:20,979 INFO L402 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:10:20,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:10:20,979 INFO L85 PathProgramCache]: Analyzing trace with hash -482510724, now seen corresponding path program 209 times [2022-01-19 07:10:20,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:10:20,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241468958] [2022-01-19 07:10:20,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:10:20,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:10:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:10:21,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:10:21,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:10:21,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241468958] [2022-01-19 07:10:21,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241468958] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:10:21,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:10:21,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:10:21,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893278242] [2022-01-19 07:10:21,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:10:21,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:10:21,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:10:21,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:10:21,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:10:21,081 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:10:21,082 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1014 places, 828 transitions, 21519 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:21,082 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:10:21,082 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:10:21,082 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:10:23,019 INFO L129 PetriNetUnfolder]: 972/3389 cut-off events. [2022-01-19 07:10:23,020 INFO L130 PetriNetUnfolder]: For 101371/101384 co-relation queries the response was YES. [2022-01-19 07:10:23,119 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28042 conditions, 3389 events. 972/3389 cut-off events. For 101371/101384 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 28140 event pairs, 390 based on Foata normal form. 1/3275 useless extension candidates. Maximal degree in co-relation 27662. Up to 853 conditions per place. [2022-01-19 07:10:23,132 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 516 selfloop transitions, 202 changer transitions 57/916 dead transitions. [2022-01-19 07:10:23,132 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1030 places, 916 transitions, 25279 flow [2022-01-19 07:10:23,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:10:23,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:10:23,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4831 transitions. [2022-01-19 07:10:23,135 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7668253968253969 [2022-01-19 07:10:23,135 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4831 transitions. [2022-01-19 07:10:23,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4831 transitions. [2022-01-19 07:10:23,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:10:23,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4831 transitions. [2022-01-19 07:10:23,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 161.03333333333333) internal successors, (4831), 30 states have internal predecessors, (4831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:23,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:23,141 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:23,141 INFO L186 Difference]: Start difference. First operand has 1014 places, 828 transitions, 21519 flow. Second operand 30 states and 4831 transitions. [2022-01-19 07:10:23,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1030 places, 916 transitions, 25279 flow [2022-01-19 07:10:24,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1014 places, 916 transitions, 24751 flow, removed 69 selfloop flow, removed 16 redundant places. [2022-01-19 07:10:24,278 INFO L242 Difference]: Finished difference. Result has 1027 places, 841 transitions, 21844 flow [2022-01-19 07:10:24,279 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=21040, PETRI_DIFFERENCE_MINUEND_PLACES=985, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=828, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=632, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=21844, PETRI_PLACES=1027, PETRI_TRANSITIONS=841} [2022-01-19 07:10:24,279 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 840 predicate places. [2022-01-19 07:10:24,279 INFO L470 AbstractCegarLoop]: Abstraction has has 1027 places, 841 transitions, 21844 flow [2022-01-19 07:10:24,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:24,279 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:10:24,279 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:10:24,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2022-01-19 07:10:24,280 INFO L402 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:10:24,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:10:24,280 INFO L85 PathProgramCache]: Analyzing trace with hash -2067571102, now seen corresponding path program 210 times [2022-01-19 07:10:24,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:10:24,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828397473] [2022-01-19 07:10:24,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:10:24,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:10:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:10:24,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:10:24,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:10:24,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828397473] [2022-01-19 07:10:24,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828397473] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:10:24,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:10:24,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:10:24,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171689514] [2022-01-19 07:10:24,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:10:24,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:10:24,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:10:24,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:10:24,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:10:24,397 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:10:24,398 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1027 places, 841 transitions, 21844 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:24,398 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:10:24,398 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:10:24,398 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:10:26,474 INFO L129 PetriNetUnfolder]: 977/3413 cut-off events. [2022-01-19 07:10:26,474 INFO L130 PetriNetUnfolder]: For 104432/104445 co-relation queries the response was YES. [2022-01-19 07:10:26,549 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28288 conditions, 3413 events. 977/3413 cut-off events. For 104432/104445 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 28451 event pairs, 376 based on Foata normal form. 1/3301 useless extension candidates. Maximal degree in co-relation 27905. Up to 853 conditions per place. [2022-01-19 07:10:26,562 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 524 selfloop transitions, 219 changer transitions 60/944 dead transitions. [2022-01-19 07:10:26,562 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1041 places, 944 transitions, 26217 flow [2022-01-19 07:10:26,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:10:26,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:10:26,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4826 transitions. [2022-01-19 07:10:26,565 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7660317460317461 [2022-01-19 07:10:26,565 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4826 transitions. [2022-01-19 07:10:26,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4826 transitions. [2022-01-19 07:10:26,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:10:26,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4826 transitions. [2022-01-19 07:10:26,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.86666666666667) internal successors, (4826), 30 states have internal predecessors, (4826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:26,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:26,571 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:26,571 INFO L186 Difference]: Start difference. First operand has 1027 places, 841 transitions, 21844 flow. Second operand 30 states and 4826 transitions. [2022-01-19 07:10:26,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1041 places, 944 transitions, 26217 flow [2022-01-19 07:10:27,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1029 places, 944 transitions, 25853 flow, removed 49 selfloop flow, removed 12 redundant places. [2022-01-19 07:10:27,735 INFO L242 Difference]: Finished difference. Result has 1043 places, 859 transitions, 22587 flow [2022-01-19 07:10:27,735 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=21524, PETRI_DIFFERENCE_MINUEND_PLACES=1000, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=841, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=631, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=22587, PETRI_PLACES=1043, PETRI_TRANSITIONS=859} [2022-01-19 07:10:27,735 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 856 predicate places. [2022-01-19 07:10:27,735 INFO L470 AbstractCegarLoop]: Abstraction has has 1043 places, 859 transitions, 22587 flow [2022-01-19 07:10:27,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:27,736 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:10:27,736 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:10:27,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2022-01-19 07:10:27,736 INFO L402 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:10:27,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:10:27,736 INFO L85 PathProgramCache]: Analyzing trace with hash -301185810, now seen corresponding path program 211 times [2022-01-19 07:10:27,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:10:27,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296074772] [2022-01-19 07:10:27,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:10:27,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:10:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:10:27,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:10:27,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:10:27,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296074772] [2022-01-19 07:10:27,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296074772] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:10:27,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:10:27,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:10:27,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124241632] [2022-01-19 07:10:27,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:10:27,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:10:27,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:10:27,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:10:27,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:10:27,842 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:10:27,843 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1043 places, 859 transitions, 22587 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:27,843 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:10:27,843 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:10:27,843 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:10:30,039 INFO L129 PetriNetUnfolder]: 981/3492 cut-off events. [2022-01-19 07:10:30,039 INFO L130 PetriNetUnfolder]: For 109728/109741 co-relation queries the response was YES. [2022-01-19 07:10:30,134 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28815 conditions, 3492 events. 981/3492 cut-off events. For 109728/109741 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 29557 event pairs, 380 based on Foata normal form. 1/3385 useless extension candidates. Maximal degree in co-relation 28426. Up to 852 conditions per place. [2022-01-19 07:10:30,148 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 537 selfloop transitions, 221 changer transitions 88/987 dead transitions. [2022-01-19 07:10:30,148 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1070 places, 987 transitions, 27869 flow [2022-01-19 07:10:30,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-19 07:10:30,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-01-19 07:10:30,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6873 transitions. [2022-01-19 07:10:30,151 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7611295681063123 [2022-01-19 07:10:30,151 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6873 transitions. [2022-01-19 07:10:30,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6873 transitions. [2022-01-19 07:10:30,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:10:30,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6873 transitions. [2022-01-19 07:10:30,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 159.8372093023256) internal successors, (6873), 43 states have internal predecessors, (6873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:30,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:30,160 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:30,160 INFO L186 Difference]: Start difference. First operand has 1043 places, 859 transitions, 22587 flow. Second operand 43 states and 6873 transitions. [2022-01-19 07:10:30,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1070 places, 987 transitions, 27869 flow [2022-01-19 07:10:31,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1059 places, 987 transitions, 27472 flow, removed 107 selfloop flow, removed 11 redundant places. [2022-01-19 07:10:31,420 INFO L242 Difference]: Finished difference. Result has 1088 places, 863 transitions, 23198 flow [2022-01-19 07:10:31,420 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=22262, PETRI_DIFFERENCE_MINUEND_PLACES=1017, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=859, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=647, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=23198, PETRI_PLACES=1088, PETRI_TRANSITIONS=863} [2022-01-19 07:10:31,421 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 901 predicate places. [2022-01-19 07:10:31,421 INFO L470 AbstractCegarLoop]: Abstraction has has 1088 places, 863 transitions, 23198 flow [2022-01-19 07:10:31,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:31,421 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:10:31,421 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:10:31,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2022-01-19 07:10:31,421 INFO L402 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:10:31,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:10:31,421 INFO L85 PathProgramCache]: Analyzing trace with hash 266956514, now seen corresponding path program 212 times [2022-01-19 07:10:31,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:10:31,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211937380] [2022-01-19 07:10:31,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:10:31,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:10:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:10:31,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:10:31,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:10:31,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211937380] [2022-01-19 07:10:31,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211937380] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:10:31,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:10:31,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:10:31,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474075606] [2022-01-19 07:10:31,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:10:31,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:10:31,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:10:31,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:10:31,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:10:31,521 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:10:31,522 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1088 places, 863 transitions, 23198 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:31,522 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:10:31,522 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:10:31,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:10:33,707 INFO L129 PetriNetUnfolder]: 965/3397 cut-off events. [2022-01-19 07:10:33,707 INFO L130 PetriNetUnfolder]: For 110425/110438 co-relation queries the response was YES. [2022-01-19 07:10:33,805 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28570 conditions, 3397 events. 965/3397 cut-off events. For 110425/110438 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 28422 event pairs, 377 based on Foata normal form. 1/3285 useless extension candidates. Maximal degree in co-relation 28160. Up to 852 conditions per place. [2022-01-19 07:10:33,818 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 523 selfloop transitions, 220 changer transitions 61/945 dead transitions. [2022-01-19 07:10:33,818 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1087 places, 945 transitions, 26936 flow [2022-01-19 07:10:33,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:10:33,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:10:33,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4827 transitions. [2022-01-19 07:10:33,820 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7661904761904762 [2022-01-19 07:10:33,820 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4827 transitions. [2022-01-19 07:10:33,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4827 transitions. [2022-01-19 07:10:33,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:10:33,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4827 transitions. [2022-01-19 07:10:33,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.9) internal successors, (4827), 30 states have internal predecessors, (4827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:33,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:33,826 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:33,826 INFO L186 Difference]: Start difference. First operand has 1088 places, 863 transitions, 23198 flow. Second operand 30 states and 4827 transitions. [2022-01-19 07:10:33,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1087 places, 945 transitions, 26936 flow [2022-01-19 07:10:34,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1050 places, 945 transitions, 26155 flow, removed 107 selfloop flow, removed 37 redundant places. [2022-01-19 07:10:34,943 INFO L242 Difference]: Finished difference. Result has 1063 places, 868 transitions, 23147 flow [2022-01-19 07:10:34,944 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=22564, PETRI_DIFFERENCE_MINUEND_PLACES=1021, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=863, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=212, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=646, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=23147, PETRI_PLACES=1063, PETRI_TRANSITIONS=868} [2022-01-19 07:10:34,944 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 876 predicate places. [2022-01-19 07:10:34,944 INFO L470 AbstractCegarLoop]: Abstraction has has 1063 places, 868 transitions, 23147 flow [2022-01-19 07:10:34,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:34,944 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:10:34,944 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:10:34,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2022-01-19 07:10:34,944 INFO L402 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:10:34,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:10:34,945 INFO L85 PathProgramCache]: Analyzing trace with hash 370357420, now seen corresponding path program 213 times [2022-01-19 07:10:34,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:10:34,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209659968] [2022-01-19 07:10:34,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:10:34,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:10:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:10:35,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:10:35,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:10:35,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209659968] [2022-01-19 07:10:35,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209659968] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:10:35,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:10:35,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:10:35,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420388762] [2022-01-19 07:10:35,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:10:35,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:10:35,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:10:35,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:10:35,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:10:35,053 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:10:35,054 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1063 places, 868 transitions, 23147 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:35,054 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:10:35,054 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:10:35,054 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:10:36,970 INFO L129 PetriNetUnfolder]: 941/3328 cut-off events. [2022-01-19 07:10:36,970 INFO L130 PetriNetUnfolder]: For 108544/108557 co-relation queries the response was YES. [2022-01-19 07:10:37,064 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27281 conditions, 3328 events. 941/3328 cut-off events. For 108544/108557 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 27641 event pairs, 378 based on Foata normal form. 1/3216 useless extension candidates. Maximal degree in co-relation 26889. Up to 847 conditions per place. [2022-01-19 07:10:37,078 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 523 selfloop transitions, 203 changer transitions 62/929 dead transitions. [2022-01-19 07:10:37,078 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1077 places, 929 transitions, 26221 flow [2022-01-19 07:10:37,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:10:37,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:10:37,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4816 transitions. [2022-01-19 07:10:37,080 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7644444444444445 [2022-01-19 07:10:37,080 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4816 transitions. [2022-01-19 07:10:37,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4816 transitions. [2022-01-19 07:10:37,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:10:37,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4816 transitions. [2022-01-19 07:10:37,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.53333333333333) internal successors, (4816), 30 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:37,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:37,086 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:37,086 INFO L186 Difference]: Start difference. First operand has 1063 places, 868 transitions, 23147 flow. Second operand 30 states and 4816 transitions. [2022-01-19 07:10:37,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1077 places, 929 transitions, 26221 flow [2022-01-19 07:10:38,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1064 places, 929 transitions, 25869 flow, removed 60 selfloop flow, removed 13 redundant places. [2022-01-19 07:10:38,135 INFO L242 Difference]: Finished difference. Result has 1075 places, 842 transitions, 22371 flow [2022-01-19 07:10:38,135 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=22817, PETRI_DIFFERENCE_MINUEND_PLACES=1035, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=868, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=665, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=22371, PETRI_PLACES=1075, PETRI_TRANSITIONS=842} [2022-01-19 07:10:38,135 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 888 predicate places. [2022-01-19 07:10:38,135 INFO L470 AbstractCegarLoop]: Abstraction has has 1075 places, 842 transitions, 22371 flow [2022-01-19 07:10:38,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:38,136 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:10:38,136 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:10:38,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2022-01-19 07:10:38,136 INFO L402 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:10:38,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:10:38,136 INFO L85 PathProgramCache]: Analyzing trace with hash -156140234, now seen corresponding path program 214 times [2022-01-19 07:10:38,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:10:38,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493672579] [2022-01-19 07:10:38,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:10:38,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:10:38,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:10:38,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:10:38,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:10:38,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493672579] [2022-01-19 07:10:38,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493672579] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:10:38,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:10:38,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:10:38,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912878639] [2022-01-19 07:10:38,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:10:38,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:10:38,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:10:38,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:10:38,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:10:38,238 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:10:38,239 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1075 places, 842 transitions, 22371 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:38,239 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:10:38,239 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:10:38,239 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:10:40,323 INFO L129 PetriNetUnfolder]: 925/3274 cut-off events. [2022-01-19 07:10:40,323 INFO L130 PetriNetUnfolder]: For 104639/104652 co-relation queries the response was YES. [2022-01-19 07:10:40,417 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26765 conditions, 3274 events. 925/3274 cut-off events. For 104639/104652 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 27079 event pairs, 372 based on Foata normal form. 1/3162 useless extension candidates. Maximal degree in co-relation 26372. Up to 846 conditions per place. [2022-01-19 07:10:40,432 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 504 selfloop transitions, 186 changer transitions 62/893 dead transitions. [2022-01-19 07:10:40,432 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1067 places, 893 transitions, 25131 flow [2022-01-19 07:10:40,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 07:10:40,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 07:10:40,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4503 transitions. [2022-01-19 07:10:40,434 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658163265306123 [2022-01-19 07:10:40,434 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4503 transitions. [2022-01-19 07:10:40,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4503 transitions. [2022-01-19 07:10:40,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:10:40,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4503 transitions. [2022-01-19 07:10:40,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.82142857142858) internal successors, (4503), 28 states have internal predecessors, (4503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:40,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:40,440 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:40,440 INFO L186 Difference]: Start difference. First operand has 1075 places, 842 transitions, 22371 flow. Second operand 28 states and 4503 transitions. [2022-01-19 07:10:40,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1067 places, 893 transitions, 25131 flow [2022-01-19 07:10:41,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1037 places, 893 transitions, 24322 flow, removed 36 selfloop flow, removed 30 redundant places. [2022-01-19 07:10:41,634 INFO L242 Difference]: Finished difference. Result has 1046 places, 817 transitions, 21239 flow [2022-01-19 07:10:41,635 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=21627, PETRI_DIFFERENCE_MINUEND_PLACES=1010, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=842, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=656, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=21239, PETRI_PLACES=1046, PETRI_TRANSITIONS=817} [2022-01-19 07:10:41,635 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 859 predicate places. [2022-01-19 07:10:41,635 INFO L470 AbstractCegarLoop]: Abstraction has has 1046 places, 817 transitions, 21239 flow [2022-01-19 07:10:41,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:41,635 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:10:41,635 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:10:41,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2022-01-19 07:10:41,635 INFO L402 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:10:41,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:10:41,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1662718622, now seen corresponding path program 215 times [2022-01-19 07:10:41,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:10:41,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101593399] [2022-01-19 07:10:41,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:10:41,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:10:41,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:10:41,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:10:41,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:10:41,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101593399] [2022-01-19 07:10:41,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101593399] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:10:41,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:10:41,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:10:41,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699201091] [2022-01-19 07:10:41,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:10:41,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:10:41,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:10:41,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:10:41,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:10:41,741 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:10:41,741 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1046 places, 817 transitions, 21239 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:41,741 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:10:41,742 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:10:41,742 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:10:43,580 INFO L129 PetriNetUnfolder]: 928/3283 cut-off events. [2022-01-19 07:10:43,580 INFO L130 PetriNetUnfolder]: For 102058/102071 co-relation queries the response was YES. [2022-01-19 07:10:43,670 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26515 conditions, 3283 events. 928/3283 cut-off events. For 102058/102071 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 27184 event pairs, 379 based on Foata normal form. 1/3170 useless extension candidates. Maximal degree in co-relation 26132. Up to 847 conditions per place. [2022-01-19 07:10:43,684 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 501 selfloop transitions, 209 changer transitions 58/909 dead transitions. [2022-01-19 07:10:43,684 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1041 places, 909 transitions, 25270 flow [2022-01-19 07:10:43,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:10:43,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:10:43,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4669 transitions. [2022-01-19 07:10:43,686 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2022-01-19 07:10:43,686 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4669 transitions. [2022-01-19 07:10:43,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4669 transitions. [2022-01-19 07:10:43,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:10:43,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4669 transitions. [2022-01-19 07:10:43,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 161.0) internal successors, (4669), 29 states have internal predecessors, (4669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:43,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:43,692 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:43,692 INFO L186 Difference]: Start difference. First operand has 1046 places, 817 transitions, 21239 flow. Second operand 29 states and 4669 transitions. [2022-01-19 07:10:43,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1041 places, 909 transitions, 25270 flow [2022-01-19 07:10:44,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1003 places, 909 transitions, 24203 flow, removed 39 selfloop flow, removed 38 redundant places. [2022-01-19 07:10:44,656 INFO L242 Difference]: Finished difference. Result has 1017 places, 828 transitions, 21157 flow [2022-01-19 07:10:44,656 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=20379, PETRI_DIFFERENCE_MINUEND_PLACES=975, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=817, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=613, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=21157, PETRI_PLACES=1017, PETRI_TRANSITIONS=828} [2022-01-19 07:10:44,656 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 830 predicate places. [2022-01-19 07:10:44,656 INFO L470 AbstractCegarLoop]: Abstraction has has 1017 places, 828 transitions, 21157 flow [2022-01-19 07:10:44,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:44,657 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:10:44,657 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:10:44,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2022-01-19 07:10:44,657 INFO L402 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:10:44,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:10:44,657 INFO L85 PathProgramCache]: Analyzing trace with hash 60543360, now seen corresponding path program 216 times [2022-01-19 07:10:44,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:10:44,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375839047] [2022-01-19 07:10:44,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:10:44,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:10:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:10:44,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:10:44,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:10:44,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375839047] [2022-01-19 07:10:44,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375839047] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:10:44,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:10:44,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:10:44,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751644220] [2022-01-19 07:10:44,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:10:44,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:10:44,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:10:44,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:10:44,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:10:44,766 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:10:44,766 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1017 places, 828 transitions, 21157 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:44,766 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:10:44,767 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:10:44,767 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:10:46,653 INFO L129 PetriNetUnfolder]: 924/3276 cut-off events. [2022-01-19 07:10:46,653 INFO L130 PetriNetUnfolder]: For 93772/93785 co-relation queries the response was YES. [2022-01-19 07:10:46,738 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26215 conditions, 3276 events. 924/3276 cut-off events. For 93772/93785 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 27007 event pairs, 382 based on Foata normal form. 1/3165 useless extension candidates. Maximal degree in co-relation 25841. Up to 847 conditions per place. [2022-01-19 07:10:46,751 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 518 selfloop transitions, 185 changer transitions 59/903 dead transitions. [2022-01-19 07:10:46,752 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1031 places, 903 transitions, 24506 flow [2022-01-19 07:10:46,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:10:46,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:10:46,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4673 transitions. [2022-01-19 07:10:46,754 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7673234811165845 [2022-01-19 07:10:46,755 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4673 transitions. [2022-01-19 07:10:46,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4673 transitions. [2022-01-19 07:10:46,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:10:46,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4673 transitions. [2022-01-19 07:10:46,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 161.13793103448276) internal successors, (4673), 29 states have internal predecessors, (4673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:46,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:46,762 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:46,762 INFO L186 Difference]: Start difference. First operand has 1017 places, 828 transitions, 21157 flow. Second operand 29 states and 4673 transitions. [2022-01-19 07:10:46,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1031 places, 903 transitions, 24506 flow [2022-01-19 07:10:47,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1017 places, 903 transitions, 24032 flow, removed 48 selfloop flow, removed 14 redundant places. [2022-01-19 07:10:47,815 INFO L242 Difference]: Finished difference. Result has 1030 places, 830 transitions, 21170 flow [2022-01-19 07:10:47,815 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=20736, PETRI_DIFFERENCE_MINUEND_PLACES=989, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=828, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=644, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=21170, PETRI_PLACES=1030, PETRI_TRANSITIONS=830} [2022-01-19 07:10:47,815 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 843 predicate places. [2022-01-19 07:10:47,816 INFO L470 AbstractCegarLoop]: Abstraction has has 1030 places, 830 transitions, 21170 flow [2022-01-19 07:10:47,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:47,816 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:10:47,816 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:10:47,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2022-01-19 07:10:47,816 INFO L402 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:10:47,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:10:47,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1402444780, now seen corresponding path program 217 times [2022-01-19 07:10:47,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:10:47,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290332487] [2022-01-19 07:10:47,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:10:47,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:10:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:10:47,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:10:47,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:10:47,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290332487] [2022-01-19 07:10:47,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290332487] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:10:47,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:10:47,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:10:47,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580996159] [2022-01-19 07:10:47,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:10:47,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:10:47,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:10:47,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:10:47,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:10:47,921 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:10:47,921 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1030 places, 830 transitions, 21170 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:47,921 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:10:47,921 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:10:47,922 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:10:49,662 INFO L129 PetriNetUnfolder]: 915/3244 cut-off events. [2022-01-19 07:10:49,663 INFO L130 PetriNetUnfolder]: For 94653/94666 co-relation queries the response was YES. [2022-01-19 07:10:49,753 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25920 conditions, 3244 events. 915/3244 cut-off events. For 94653/94666 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 26775 event pairs, 382 based on Foata normal form. 1/3131 useless extension candidates. Maximal degree in co-relation 25541. Up to 847 conditions per place. [2022-01-19 07:10:49,766 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 516 selfloop transitions, 172 changer transitions 59/888 dead transitions. [2022-01-19 07:10:49,767 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1045 places, 888 transitions, 24173 flow [2022-01-19 07:10:49,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:10:49,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:10:49,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4820 transitions. [2022-01-19 07:10:49,769 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.765079365079365 [2022-01-19 07:10:49,769 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4820 transitions. [2022-01-19 07:10:49,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4820 transitions. [2022-01-19 07:10:49,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:10:49,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4820 transitions. [2022-01-19 07:10:49,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.66666666666666) internal successors, (4820), 30 states have internal predecessors, (4820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:49,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:49,775 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:49,775 INFO L186 Difference]: Start difference. First operand has 1030 places, 830 transitions, 21170 flow. Second operand 30 states and 4820 transitions. [2022-01-19 07:10:49,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1045 places, 888 transitions, 24173 flow [2022-01-19 07:10:50,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1030 places, 888 transitions, 23785 flow, removed 49 selfloop flow, removed 15 redundant places. [2022-01-19 07:10:50,759 INFO L242 Difference]: Finished difference. Result has 1042 places, 817 transitions, 20869 flow [2022-01-19 07:10:50,759 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=20829, PETRI_DIFFERENCE_MINUEND_PLACES=1001, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=830, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=658, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=20869, PETRI_PLACES=1042, PETRI_TRANSITIONS=817} [2022-01-19 07:10:50,759 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 855 predicate places. [2022-01-19 07:10:50,759 INFO L470 AbstractCegarLoop]: Abstraction has has 1042 places, 817 transitions, 20869 flow [2022-01-19 07:10:50,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:50,759 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:10:50,759 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:10:50,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2022-01-19 07:10:50,760 INFO L402 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:10:50,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:10:50,760 INFO L85 PathProgramCache]: Analyzing trace with hash 692994718, now seen corresponding path program 218 times [2022-01-19 07:10:50,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:10:50,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130349049] [2022-01-19 07:10:50,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:10:50,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:10:50,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:10:50,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:10:50,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:10:50,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130349049] [2022-01-19 07:10:50,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130349049] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:10:50,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:10:50,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:10:50,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079441027] [2022-01-19 07:10:50,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:10:50,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:10:50,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:10:50,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:10:50,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:10:50,866 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:10:50,867 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1042 places, 817 transitions, 20869 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:50,867 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:10:50,867 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:10:50,867 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:10:52,514 INFO L129 PetriNetUnfolder]: 890/3159 cut-off events. [2022-01-19 07:10:52,514 INFO L130 PetriNetUnfolder]: For 91632/91645 co-relation queries the response was YES. [2022-01-19 07:10:52,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24946 conditions, 3159 events. 890/3159 cut-off events. For 91632/91645 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 25763 event pairs, 378 based on Foata normal form. 1/3048 useless extension candidates. Maximal degree in co-relation 24565. Up to 841 conditions per place. [2022-01-19 07:10:52,609 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 502 selfloop transitions, 150 changer transitions 61/854 dead transitions. [2022-01-19 07:10:52,609 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1043 places, 854 transitions, 23043 flow [2022-01-19 07:10:52,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:10:52,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:10:52,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4654 transitions. [2022-01-19 07:10:52,611 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7642036124794745 [2022-01-19 07:10:52,611 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4654 transitions. [2022-01-19 07:10:52,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4654 transitions. [2022-01-19 07:10:52,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:10:52,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4654 transitions. [2022-01-19 07:10:52,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.48275862068965) internal successors, (4654), 29 states have internal predecessors, (4654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:52,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:52,617 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:52,617 INFO L186 Difference]: Start difference. First operand has 1042 places, 817 transitions, 20869 flow. Second operand 29 states and 4654 transitions. [2022-01-19 07:10:52,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1043 places, 854 transitions, 23043 flow [2022-01-19 07:10:53,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1012 places, 854 transitions, 22482 flow, removed 32 selfloop flow, removed 31 redundant places. [2022-01-19 07:10:53,625 INFO L242 Difference]: Finished difference. Result has 1021 places, 781 transitions, 19552 flow [2022-01-19 07:10:53,625 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=20349, PETRI_DIFFERENCE_MINUEND_PLACES=984, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=817, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=667, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=19552, PETRI_PLACES=1021, PETRI_TRANSITIONS=781} [2022-01-19 07:10:53,625 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 834 predicate places. [2022-01-19 07:10:53,625 INFO L470 AbstractCegarLoop]: Abstraction has has 1021 places, 781 transitions, 19552 flow [2022-01-19 07:10:53,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:53,625 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:10:53,626 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:10:53,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2022-01-19 07:10:53,626 INFO L402 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:10:53,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:10:53,626 INFO L85 PathProgramCache]: Analyzing trace with hash -2112329232, now seen corresponding path program 219 times [2022-01-19 07:10:53,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:10:53,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047703335] [2022-01-19 07:10:53,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:10:53,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:10:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:10:53,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:10:53,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:10:53,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047703335] [2022-01-19 07:10:53,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047703335] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:10:53,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:10:53,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:10:53,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140121682] [2022-01-19 07:10:53,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:10:53,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:10:53,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:10:53,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:10:53,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:10:53,732 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:10:53,733 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1021 places, 781 transitions, 19552 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:53,733 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:10:53,733 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:10:53,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:10:55,483 INFO L129 PetriNetUnfolder]: 884/3171 cut-off events. [2022-01-19 07:10:55,483 INFO L130 PetriNetUnfolder]: For 90049/90062 co-relation queries the response was YES. [2022-01-19 07:10:55,566 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24653 conditions, 3171 events. 884/3171 cut-off events. For 90049/90062 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 26098 event pairs, 362 based on Foata normal form. 1/3060 useless extension candidates. Maximal degree in co-relation 24283. Up to 840 conditions per place. [2022-01-19 07:10:55,578 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 469 selfloop transitions, 184 changer transitions 73/867 dead transitions. [2022-01-19 07:10:55,578 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1011 places, 867 transitions, 23146 flow [2022-01-19 07:10:55,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 07:10:55,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 07:10:55,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5607 transitions. [2022-01-19 07:10:55,581 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7628571428571429 [2022-01-19 07:10:55,581 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5607 transitions. [2022-01-19 07:10:55,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5607 transitions. [2022-01-19 07:10:55,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:10:55,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5607 transitions. [2022-01-19 07:10:55,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 160.2) internal successors, (5607), 35 states have internal predecessors, (5607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:55,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:55,589 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:55,589 INFO L186 Difference]: Start difference. First operand has 1021 places, 781 transitions, 19552 flow. Second operand 35 states and 5607 transitions. [2022-01-19 07:10:55,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1011 places, 867 transitions, 23146 flow [2022-01-19 07:10:56,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 977 places, 867 transitions, 22330 flow, removed 38 selfloop flow, removed 34 redundant places. [2022-01-19 07:10:56,482 INFO L242 Difference]: Finished difference. Result has 991 places, 774 transitions, 19101 flow [2022-01-19 07:10:56,483 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18856, PETRI_DIFFERENCE_MINUEND_PLACES=943, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=781, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=600, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=19101, PETRI_PLACES=991, PETRI_TRANSITIONS=774} [2022-01-19 07:10:56,483 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 804 predicate places. [2022-01-19 07:10:56,483 INFO L470 AbstractCegarLoop]: Abstraction has has 991 places, 774 transitions, 19101 flow [2022-01-19 07:10:56,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:56,483 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:10:56,483 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:10:56,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2022-01-19 07:10:56,483 INFO L402 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:10:56,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:10:56,484 INFO L85 PathProgramCache]: Analyzing trace with hash 352028184, now seen corresponding path program 220 times [2022-01-19 07:10:56,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:10:56,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932153079] [2022-01-19 07:10:56,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:10:56,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:10:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:10:56,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:10:56,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:10:56,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932153079] [2022-01-19 07:10:56,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932153079] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:10:56,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:10:56,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:10:56,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430081377] [2022-01-19 07:10:56,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:10:56,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:10:56,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:10:56,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:10:56,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:10:56,582 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:10:56,583 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 991 places, 774 transitions, 19101 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:56,583 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:10:56,583 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:10:56,583 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:10:58,388 INFO L129 PetriNetUnfolder]: 868/3202 cut-off events. [2022-01-19 07:10:58,388 INFO L130 PetriNetUnfolder]: For 87910/87923 co-relation queries the response was YES. [2022-01-19 07:10:58,485 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24310 conditions, 3202 events. 868/3202 cut-off events. For 87910/87923 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 26570 event pairs, 349 based on Foata normal form. 1/3104 useless extension candidates. Maximal degree in co-relation 23948. Up to 839 conditions per place. [2022-01-19 07:10:58,498 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 463 selfloop transitions, 207 changer transitions 90/901 dead transitions. [2022-01-19 07:10:58,498 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1013 places, 901 transitions, 24171 flow [2022-01-19 07:10:58,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-19 07:10:58,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-01-19 07:10:58,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7032 transitions. [2022-01-19 07:10:58,501 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7610389610389611 [2022-01-19 07:10:58,501 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7032 transitions. [2022-01-19 07:10:58,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7032 transitions. [2022-01-19 07:10:58,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:10:58,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7032 transitions. [2022-01-19 07:10:58,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.8181818181818) internal successors, (7032), 44 states have internal predecessors, (7032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:58,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:58,510 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:58,510 INFO L186 Difference]: Start difference. First operand has 991 places, 774 transitions, 19101 flow. Second operand 44 states and 7032 transitions. [2022-01-19 07:10:58,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1013 places, 901 transitions, 24171 flow [2022-01-19 07:10:59,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 986 places, 901 transitions, 23646 flow, removed 65 selfloop flow, removed 27 redundant places. [2022-01-19 07:10:59,413 INFO L242 Difference]: Finished difference. Result has 1015 places, 770 transitions, 19217 flow [2022-01-19 07:10:59,413 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18670, PETRI_DIFFERENCE_MINUEND_PLACES=943, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=774, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=19217, PETRI_PLACES=1015, PETRI_TRANSITIONS=770} [2022-01-19 07:10:59,413 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 828 predicate places. [2022-01-19 07:10:59,413 INFO L470 AbstractCegarLoop]: Abstraction has has 1015 places, 770 transitions, 19217 flow [2022-01-19 07:10:59,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:59,414 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:10:59,414 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:10:59,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2022-01-19 07:10:59,414 INFO L402 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:10:59,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:10:59,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1465091344, now seen corresponding path program 221 times [2022-01-19 07:10:59,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:10:59,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868131188] [2022-01-19 07:10:59,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:10:59,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:10:59,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:10:59,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:10:59,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:10:59,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868131188] [2022-01-19 07:10:59,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868131188] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:10:59,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:10:59,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:10:59,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092728320] [2022-01-19 07:10:59,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:10:59,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:10:59,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:10:59,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:10:59,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:10:59,519 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:10:59,520 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1015 places, 770 transitions, 19217 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:10:59,520 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:10:59,520 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:10:59,520 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:01,240 INFO L129 PetriNetUnfolder]: 855/3101 cut-off events. [2022-01-19 07:11:01,241 INFO L130 PetriNetUnfolder]: For 84199/84212 co-relation queries the response was YES. [2022-01-19 07:11:01,321 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23903 conditions, 3101 events. 855/3101 cut-off events. For 84199/84212 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 25322 event pairs, 358 based on Foata normal form. 1/2995 useless extension candidates. Maximal degree in co-relation 23532. Up to 843 conditions per place. [2022-01-19 07:11:01,332 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 450 selfloop transitions, 207 changer transitions 60/858 dead transitions. [2022-01-19 07:11:01,332 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1013 places, 858 transitions, 22939 flow [2022-01-19 07:11:01,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:11:01,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:11:01,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4825 transitions. [2022-01-19 07:11:01,334 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658730158730159 [2022-01-19 07:11:01,334 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4825 transitions. [2022-01-19 07:11:01,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4825 transitions. [2022-01-19 07:11:01,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:01,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4825 transitions. [2022-01-19 07:11:01,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.83333333333334) internal successors, (4825), 30 states have internal predecessors, (4825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:01,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:01,340 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:01,340 INFO L186 Difference]: Start difference. First operand has 1015 places, 770 transitions, 19217 flow. Second operand 30 states and 4825 transitions. [2022-01-19 07:11:01,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1013 places, 858 transitions, 22939 flow [2022-01-19 07:11:02,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 974 places, 858 transitions, 22234 flow, removed 113 selfloop flow, removed 39 redundant places. [2022-01-19 07:11:02,280 INFO L242 Difference]: Finished difference. Result has 987 places, 776 transitions, 19261 flow [2022-01-19 07:11:02,281 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18654, PETRI_DIFFERENCE_MINUEND_PLACES=945, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=19261, PETRI_PLACES=987, PETRI_TRANSITIONS=776} [2022-01-19 07:11:02,281 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 800 predicate places. [2022-01-19 07:11:02,281 INFO L470 AbstractCegarLoop]: Abstraction has has 987 places, 776 transitions, 19261 flow [2022-01-19 07:11:02,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:02,281 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:02,281 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:02,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2022-01-19 07:11:02,282 INFO L402 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:02,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:02,282 INFO L85 PathProgramCache]: Analyzing trace with hash -24388250, now seen corresponding path program 222 times [2022-01-19 07:11:02,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:02,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132845808] [2022-01-19 07:11:02,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:02,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:02,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:02,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:02,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132845808] [2022-01-19 07:11:02,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132845808] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:02,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:02,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:11:02,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484051786] [2022-01-19 07:11:02,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:02,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:11:02,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:02,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:11:02,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:11:02,389 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:11:02,390 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 987 places, 776 transitions, 19261 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:02,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:02,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:11:02,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:03,842 INFO L129 PetriNetUnfolder]: 844/3066 cut-off events. [2022-01-19 07:11:03,842 INFO L130 PetriNetUnfolder]: For 82101/82114 co-relation queries the response was YES. [2022-01-19 07:11:03,918 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23126 conditions, 3066 events. 844/3066 cut-off events. For 82101/82114 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 24979 event pairs, 364 based on Foata normal form. 1/2957 useless extension candidates. Maximal degree in co-relation 22777. Up to 841 conditions per place. [2022-01-19 07:11:03,928 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 464 selfloop transitions, 175 changer transitions 61/841 dead transitions. [2022-01-19 07:11:03,928 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1000 places, 841 transitions, 22239 flow [2022-01-19 07:11:03,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:11:03,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:11:03,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4658 transitions. [2022-01-19 07:11:03,931 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7648604269293925 [2022-01-19 07:11:03,931 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4658 transitions. [2022-01-19 07:11:03,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4658 transitions. [2022-01-19 07:11:03,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:03,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4658 transitions. [2022-01-19 07:11:03,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.6206896551724) internal successors, (4658), 29 states have internal predecessors, (4658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:03,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:03,937 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:03,937 INFO L186 Difference]: Start difference. First operand has 987 places, 776 transitions, 19261 flow. Second operand 29 states and 4658 transitions. [2022-01-19 07:11:03,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1000 places, 841 transitions, 22239 flow [2022-01-19 07:11:04,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 985 places, 841 transitions, 21901 flow, removed 53 selfloop flow, removed 15 redundant places. [2022-01-19 07:11:04,709 INFO L242 Difference]: Finished difference. Result has 996 places, 763 transitions, 19010 flow [2022-01-19 07:11:04,709 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18948, PETRI_DIFFERENCE_MINUEND_PLACES=957, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=776, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=601, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=19010, PETRI_PLACES=996, PETRI_TRANSITIONS=763} [2022-01-19 07:11:04,709 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 809 predicate places. [2022-01-19 07:11:04,709 INFO L470 AbstractCegarLoop]: Abstraction has has 996 places, 763 transitions, 19010 flow [2022-01-19 07:11:04,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:04,710 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:04,710 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:04,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2022-01-19 07:11:04,710 INFO L402 AbstractCegarLoop]: === Iteration 271 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:04,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:04,710 INFO L85 PathProgramCache]: Analyzing trace with hash -112489010, now seen corresponding path program 223 times [2022-01-19 07:11:04,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:04,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289926483] [2022-01-19 07:11:04,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:04,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:04,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:04,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:04,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:04,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289926483] [2022-01-19 07:11:04,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289926483] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:04,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:04,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:11:04,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735413539] [2022-01-19 07:11:04,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:04,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:11:04,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:04,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:11:04,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:11:04,819 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:11:04,820 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 996 places, 763 transitions, 19010 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:04,820 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:04,820 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:11:04,820 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:06,257 INFO L129 PetriNetUnfolder]: 816/2975 cut-off events. [2022-01-19 07:11:06,258 INFO L130 PetriNetUnfolder]: For 78401/78414 co-relation queries the response was YES. [2022-01-19 07:11:06,330 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22158 conditions, 2975 events. 816/2975 cut-off events. For 78401/78414 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 23931 event pairs, 350 based on Foata normal form. 1/2868 useless extension candidates. Maximal degree in co-relation 21809. Up to 832 conditions per place. [2022-01-19 07:11:06,340 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 445 selfloop transitions, 150 changer transitions 64/800 dead transitions. [2022-01-19 07:11:06,340 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 999 places, 800 transitions, 20995 flow [2022-01-19 07:11:06,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:11:06,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:11:06,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4802 transitions. [2022-01-19 07:11:06,343 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7622222222222222 [2022-01-19 07:11:06,343 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4802 transitions. [2022-01-19 07:11:06,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4802 transitions. [2022-01-19 07:11:06,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:06,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4802 transitions. [2022-01-19 07:11:06,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.06666666666666) internal successors, (4802), 30 states have internal predecessors, (4802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:06,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:06,349 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:06,349 INFO L186 Difference]: Start difference. First operand has 996 places, 763 transitions, 19010 flow. Second operand 30 states and 4802 transitions. [2022-01-19 07:11:06,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 999 places, 800 transitions, 20995 flow [2022-01-19 07:11:07,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 970 places, 800 transitions, 20492 flow, removed 23 selfloop flow, removed 29 redundant places. [2022-01-19 07:11:07,140 INFO L242 Difference]: Finished difference. Result has 977 places, 719 transitions, 17559 flow [2022-01-19 07:11:07,140 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18531, PETRI_DIFFERENCE_MINUEND_PLACES=941, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=763, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=613, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17559, PETRI_PLACES=977, PETRI_TRANSITIONS=719} [2022-01-19 07:11:07,140 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 790 predicate places. [2022-01-19 07:11:07,140 INFO L470 AbstractCegarLoop]: Abstraction has has 977 places, 719 transitions, 17559 flow [2022-01-19 07:11:07,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:07,141 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:07,141 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:07,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2022-01-19 07:11:07,141 INFO L402 AbstractCegarLoop]: === Iteration 272 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:07,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:07,141 INFO L85 PathProgramCache]: Analyzing trace with hash -201395734, now seen corresponding path program 224 times [2022-01-19 07:11:07,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:07,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002109867] [2022-01-19 07:11:07,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:07,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:07,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:07,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:07,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002109867] [2022-01-19 07:11:07,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002109867] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:07,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:07,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:11:07,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6503345] [2022-01-19 07:11:07,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:07,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:11:07,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:07,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:11:07,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:11:07,238 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:11:07,239 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 977 places, 719 transitions, 17559 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:07,239 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:07,239 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:11:07,239 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:08,610 INFO L129 PetriNetUnfolder]: 813/2976 cut-off events. [2022-01-19 07:11:08,610 INFO L130 PetriNetUnfolder]: For 76135/76148 co-relation queries the response was YES. [2022-01-19 07:11:08,684 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22014 conditions, 2976 events. 813/2976 cut-off events. For 76135/76148 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 24011 event pairs, 330 based on Foata normal form. 1/2875 useless extension candidates. Maximal degree in co-relation 21674. Up to 834 conditions per place. [2022-01-19 07:11:08,693 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 325 selfloop transitions, 283 changer transitions 61/810 dead transitions. [2022-01-19 07:11:08,693 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 956 places, 810 transitions, 21113 flow [2022-01-19 07:11:08,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:11:08,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:11:08,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4817 transitions. [2022-01-19 07:11:08,696 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646031746031746 [2022-01-19 07:11:08,696 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4817 transitions. [2022-01-19 07:11:08,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4817 transitions. [2022-01-19 07:11:08,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:08,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4817 transitions. [2022-01-19 07:11:08,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.56666666666666) internal successors, (4817), 30 states have internal predecessors, (4817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:08,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:08,702 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:08,702 INFO L186 Difference]: Start difference. First operand has 977 places, 719 transitions, 17559 flow. Second operand 30 states and 4817 transitions. [2022-01-19 07:11:08,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 956 places, 810 transitions, 21113 flow [2022-01-19 07:11:09,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 922 places, 810 transitions, 19990 flow, removed 27 selfloop flow, removed 34 redundant places. [2022-01-19 07:11:09,430 INFO L242 Difference]: Finished difference. Result has 935 places, 725 transitions, 17335 flow [2022-01-19 07:11:09,430 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16582, PETRI_DIFFERENCE_MINUEND_PLACES=893, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=719, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17335, PETRI_PLACES=935, PETRI_TRANSITIONS=725} [2022-01-19 07:11:09,431 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 748 predicate places. [2022-01-19 07:11:09,431 INFO L470 AbstractCegarLoop]: Abstraction has has 935 places, 725 transitions, 17335 flow [2022-01-19 07:11:09,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:09,431 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:09,431 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:09,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2022-01-19 07:11:09,431 INFO L402 AbstractCegarLoop]: === Iteration 273 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:09,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:09,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1469440986, now seen corresponding path program 225 times [2022-01-19 07:11:09,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:09,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406650884] [2022-01-19 07:11:09,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:09,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:09,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:09,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:09,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406650884] [2022-01-19 07:11:09,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406650884] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:09,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:09,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:11:09,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700576081] [2022-01-19 07:11:09,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:09,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:11:09,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:09,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:11:09,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:11:09,529 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:11:09,530 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 935 places, 725 transitions, 17335 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:09,530 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:09,530 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:11:09,530 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:11,038 INFO L129 PetriNetUnfolder]: 810/2987 cut-off events. [2022-01-19 07:11:11,038 INFO L130 PetriNetUnfolder]: For 72633/72646 co-relation queries the response was YES. [2022-01-19 07:11:11,107 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21746 conditions, 2987 events. 810/2987 cut-off events. For 72633/72646 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 24135 event pairs, 337 based on Foata normal form. 1/2888 useless extension candidates. Maximal degree in co-relation 21414. Up to 833 conditions per place. [2022-01-19 07:11:11,117 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 385 selfloop transitions, 228 changer transitions 68/822 dead transitions. [2022-01-19 07:11:11,117 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 956 places, 822 transitions, 21143 flow [2022-01-19 07:11:11,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 07:11:11,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 07:11:11,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5925 transitions. [2022-01-19 07:11:11,119 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625482625482626 [2022-01-19 07:11:11,119 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5925 transitions. [2022-01-19 07:11:11,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5925 transitions. [2022-01-19 07:11:11,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:11,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5925 transitions. [2022-01-19 07:11:11,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.13513513513513) internal successors, (5925), 37 states have internal predecessors, (5925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:11,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:11,127 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:11,127 INFO L186 Difference]: Start difference. First operand has 935 places, 725 transitions, 17335 flow. Second operand 37 states and 5925 transitions. [2022-01-19 07:11:11,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 956 places, 822 transitions, 21143 flow [2022-01-19 07:11:11,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 942 places, 822 transitions, 20784 flow, removed 74 selfloop flow, removed 14 redundant places. [2022-01-19 07:11:11,803 INFO L242 Difference]: Finished difference. Result has 966 places, 729 transitions, 17764 flow [2022-01-19 07:11:11,804 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17051, PETRI_DIFFERENCE_MINUEND_PLACES=906, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=725, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=17764, PETRI_PLACES=966, PETRI_TRANSITIONS=729} [2022-01-19 07:11:11,804 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 779 predicate places. [2022-01-19 07:11:11,804 INFO L470 AbstractCegarLoop]: Abstraction has has 966 places, 729 transitions, 17764 flow [2022-01-19 07:11:11,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:11,804 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:11,804 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:11,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2022-01-19 07:11:11,805 INFO L402 AbstractCegarLoop]: === Iteration 274 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:11,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:11,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1320396048, now seen corresponding path program 226 times [2022-01-19 07:11:11,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:11,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920551460] [2022-01-19 07:11:11,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:11,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:11,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:11,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:11,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:11,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920551460] [2022-01-19 07:11:11,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920551460] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:11,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:11,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:11:11,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912618152] [2022-01-19 07:11:11,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:11,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:11:11,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:11,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:11:11,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:11:11,907 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:11:11,908 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 966 places, 729 transitions, 17764 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:11,908 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:11,908 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:11:11,908 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:13,355 INFO L129 PetriNetUnfolder]: 806/2971 cut-off events. [2022-01-19 07:11:13,355 INFO L130 PetriNetUnfolder]: For 77461/77474 co-relation queries the response was YES. [2022-01-19 07:11:13,417 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21922 conditions, 2971 events. 806/2971 cut-off events. For 77461/77474 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 23956 event pairs, 328 based on Foata normal form. 1/2871 useless extension candidates. Maximal degree in co-relation 21576. Up to 832 conditions per place. [2022-01-19 07:11:13,426 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 399 selfloop transitions, 222 changer transitions 61/823 dead transitions. [2022-01-19 07:11:13,426 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 970 places, 823 transitions, 21603 flow [2022-01-19 07:11:13,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 07:11:13,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 07:11:13,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4508 transitions. [2022-01-19 07:11:13,428 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2022-01-19 07:11:13,428 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4508 transitions. [2022-01-19 07:11:13,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4508 transitions. [2022-01-19 07:11:13,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:13,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4508 transitions. [2022-01-19 07:11:13,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 161.0) internal successors, (4508), 28 states have internal predecessors, (4508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:13,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:13,434 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:13,434 INFO L186 Difference]: Start difference. First operand has 966 places, 729 transitions, 17764 flow. Second operand 28 states and 4508 transitions. [2022-01-19 07:11:13,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 970 places, 823 transitions, 21603 flow [2022-01-19 07:11:14,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 946 places, 823 transitions, 21174 flow, removed 85 selfloop flow, removed 24 redundant places. [2022-01-19 07:11:14,176 INFO L242 Difference]: Finished difference. Result has 958 places, 737 transitions, 18112 flow [2022-01-19 07:11:14,176 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17395, PETRI_DIFFERENCE_MINUEND_PLACES=919, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=729, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=212, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=18112, PETRI_PLACES=958, PETRI_TRANSITIONS=737} [2022-01-19 07:11:14,176 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 771 predicate places. [2022-01-19 07:11:14,176 INFO L470 AbstractCegarLoop]: Abstraction has has 958 places, 737 transitions, 18112 flow [2022-01-19 07:11:14,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:14,177 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:14,177 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:14,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2022-01-19 07:11:14,177 INFO L402 AbstractCegarLoop]: === Iteration 275 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:14,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:14,177 INFO L85 PathProgramCache]: Analyzing trace with hash -130160226, now seen corresponding path program 227 times [2022-01-19 07:11:14,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:14,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135581977] [2022-01-19 07:11:14,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:14,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:14,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:14,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:14,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135581977] [2022-01-19 07:11:14,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135581977] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:14,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:14,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:11:14,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684537977] [2022-01-19 07:11:14,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:14,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:11:14,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:14,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:11:14,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:11:14,278 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:11:14,279 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 958 places, 737 transitions, 18112 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:14,279 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:14,279 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:11:14,279 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:15,643 INFO L129 PetriNetUnfolder]: 808/2973 cut-off events. [2022-01-19 07:11:15,644 INFO L130 PetriNetUnfolder]: For 77266/77279 co-relation queries the response was YES. [2022-01-19 07:11:15,724 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22103 conditions, 2973 events. 808/2973 cut-off events. For 77266/77279 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 24075 event pairs, 341 based on Foata normal form. 1/2869 useless extension candidates. Maximal degree in co-relation 21765. Up to 834 conditions per place. [2022-01-19 07:11:15,734 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 423 selfloop transitions, 196 changer transitions 56/816 dead transitions. [2022-01-19 07:11:15,734 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 973 places, 816 transitions, 21658 flow [2022-01-19 07:11:15,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:11:15,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:11:15,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4671 transitions. [2022-01-19 07:11:15,736 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7669950738916256 [2022-01-19 07:11:15,736 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4671 transitions. [2022-01-19 07:11:15,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4671 transitions. [2022-01-19 07:11:15,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:15,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4671 transitions. [2022-01-19 07:11:15,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 161.06896551724137) internal successors, (4671), 29 states have internal predecessors, (4671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:15,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:15,742 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:15,742 INFO L186 Difference]: Start difference. First operand has 958 places, 737 transitions, 18112 flow. Second operand 29 states and 4671 transitions. [2022-01-19 07:11:15,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 973 places, 816 transitions, 21658 flow [2022-01-19 07:11:16,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 959 places, 816 transitions, 21138 flow, removed 67 selfloop flow, removed 14 redundant places. [2022-01-19 07:11:16,463 INFO L242 Difference]: Finished difference. Result has 972 places, 748 transitions, 18495 flow [2022-01-19 07:11:16,463 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17653, PETRI_DIFFERENCE_MINUEND_PLACES=931, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=737, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=18495, PETRI_PLACES=972, PETRI_TRANSITIONS=748} [2022-01-19 07:11:16,463 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 785 predicate places. [2022-01-19 07:11:16,464 INFO L470 AbstractCegarLoop]: Abstraction has has 972 places, 748 transitions, 18495 flow [2022-01-19 07:11:16,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:16,464 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:16,464 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:16,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2022-01-19 07:11:16,464 INFO L402 AbstractCegarLoop]: === Iteration 276 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:16,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:16,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1369733580, now seen corresponding path program 228 times [2022-01-19 07:11:16,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:16,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752276278] [2022-01-19 07:11:16,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:16,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:16,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:16,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:16,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:16,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752276278] [2022-01-19 07:11:16,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752276278] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:16,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:16,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:11:16,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315354832] [2022-01-19 07:11:16,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:16,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:11:16,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:16,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:11:16,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:11:16,567 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:11:16,568 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 972 places, 748 transitions, 18495 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:16,568 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:16,568 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:11:16,568 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:18,169 INFO L129 PetriNetUnfolder]: 790/2912 cut-off events. [2022-01-19 07:11:18,170 INFO L130 PetriNetUnfolder]: For 76302/76315 co-relation queries the response was YES. [2022-01-19 07:11:18,225 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21451 conditions, 2912 events. 790/2912 cut-off events. For 76302/76315 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 23417 event pairs, 340 based on Foata normal form. 1/2810 useless extension candidates. Maximal degree in co-relation 21108. Up to 835 conditions per place. [2022-01-19 07:11:18,234 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 419 selfloop transitions, 180 changer transitions 61/801 dead transitions. [2022-01-19 07:11:18,234 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 985 places, 801 transitions, 21098 flow [2022-01-19 07:11:18,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 07:11:18,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 07:11:18,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4501 transitions. [2022-01-19 07:11:18,236 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7654761904761904 [2022-01-19 07:11:18,236 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4501 transitions. [2022-01-19 07:11:18,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4501 transitions. [2022-01-19 07:11:18,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:18,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4501 transitions. [2022-01-19 07:11:18,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.75) internal successors, (4501), 28 states have internal predecessors, (4501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:18,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:18,242 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:18,242 INFO L186 Difference]: Start difference. First operand has 972 places, 748 transitions, 18495 flow. Second operand 28 states and 4501 transitions. [2022-01-19 07:11:18,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 985 places, 801 transitions, 21098 flow [2022-01-19 07:11:18,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 971 places, 801 transitions, 20662 flow, removed 76 selfloop flow, removed 14 redundant places. [2022-01-19 07:11:18,989 INFO L242 Difference]: Finished difference. Result has 980 places, 724 transitions, 17758 flow [2022-01-19 07:11:18,989 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18093, PETRI_DIFFERENCE_MINUEND_PLACES=944, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=17758, PETRI_PLACES=980, PETRI_TRANSITIONS=724} [2022-01-19 07:11:18,989 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 793 predicate places. [2022-01-19 07:11:18,989 INFO L470 AbstractCegarLoop]: Abstraction has has 980 places, 724 transitions, 17758 flow [2022-01-19 07:11:18,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:18,990 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:18,990 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:18,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2022-01-19 07:11:18,990 INFO L402 AbstractCegarLoop]: === Iteration 277 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:18,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:18,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1946327382, now seen corresponding path program 229 times [2022-01-19 07:11:18,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:18,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281127609] [2022-01-19 07:11:18,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:18,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:19,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:19,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:19,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281127609] [2022-01-19 07:11:19,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281127609] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:19,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:19,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:11:19,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116502724] [2022-01-19 07:11:19,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:19,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:11:19,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:19,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:11:19,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:11:19,089 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:11:19,090 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 980 places, 724 transitions, 17758 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:19,090 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:19,090 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:11:19,090 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:20,472 INFO L129 PetriNetUnfolder]: 775/2870 cut-off events. [2022-01-19 07:11:20,473 INFO L130 PetriNetUnfolder]: For 73915/73928 co-relation queries the response was YES. [2022-01-19 07:11:20,560 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20926 conditions, 2870 events. 775/2870 cut-off events. For 73915/73928 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 23041 event pairs, 349 based on Foata normal form. 1/2766 useless extension candidates. Maximal degree in co-relation 20583. Up to 832 conditions per place. [2022-01-19 07:11:20,572 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 405 selfloop transitions, 167 changer transitions 61/774 dead transitions. [2022-01-19 07:11:20,572 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 976 places, 774 transitions, 20215 flow [2022-01-19 07:11:20,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:11:20,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:11:20,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4818 transitions. [2022-01-19 07:11:20,574 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7647619047619048 [2022-01-19 07:11:20,574 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4818 transitions. [2022-01-19 07:11:20,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4818 transitions. [2022-01-19 07:11:20,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:20,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4818 transitions. [2022-01-19 07:11:20,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.6) internal successors, (4818), 30 states have internal predecessors, (4818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:20,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:20,581 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:20,581 INFO L186 Difference]: Start difference. First operand has 980 places, 724 transitions, 17758 flow. Second operand 30 states and 4818 transitions. [2022-01-19 07:11:20,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 976 places, 774 transitions, 20215 flow [2022-01-19 07:11:21,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 945 places, 774 transitions, 19370 flow, removed 30 selfloop flow, removed 31 redundant places. [2022-01-19 07:11:21,252 INFO L242 Difference]: Finished difference. Result has 954 places, 702 transitions, 16671 flow [2022-01-19 07:11:21,252 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16998, PETRI_DIFFERENCE_MINUEND_PLACES=916, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=724, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=16671, PETRI_PLACES=954, PETRI_TRANSITIONS=702} [2022-01-19 07:11:21,252 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 767 predicate places. [2022-01-19 07:11:21,252 INFO L470 AbstractCegarLoop]: Abstraction has has 954 places, 702 transitions, 16671 flow [2022-01-19 07:11:21,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:21,253 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:21,253 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:21,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2022-01-19 07:11:21,253 INFO L402 AbstractCegarLoop]: === Iteration 278 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:21,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:21,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1330589584, now seen corresponding path program 230 times [2022-01-19 07:11:21,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:21,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443102632] [2022-01-19 07:11:21,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:21,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:21,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:21,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:21,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:21,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443102632] [2022-01-19 07:11:21,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443102632] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:21,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:21,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:11:21,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393887165] [2022-01-19 07:11:21,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:21,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:11:21,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:21,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:11:21,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:11:21,364 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:11:21,364 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 954 places, 702 transitions, 16671 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:21,365 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:21,365 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:11:21,365 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:22,819 INFO L129 PetriNetUnfolder]: 773/2885 cut-off events. [2022-01-19 07:11:22,819 INFO L130 PetriNetUnfolder]: For 70378/70391 co-relation queries the response was YES. [2022-01-19 07:11:22,900 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20523 conditions, 2885 events. 773/2885 cut-off events. For 70378/70391 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 23198 event pairs, 332 based on Foata normal form. 1/2787 useless extension candidates. Maximal degree in co-relation 20189. Up to 831 conditions per place. [2022-01-19 07:11:22,910 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 401 selfloop transitions, 187 changer transitions 72/801 dead transitions. [2022-01-19 07:11:22,910 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 962 places, 801 transitions, 20502 flow [2022-01-19 07:11:22,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 07:11:22,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 07:11:22,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5770 transitions. [2022-01-19 07:11:22,912 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7632275132275133 [2022-01-19 07:11:22,912 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5770 transitions. [2022-01-19 07:11:22,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5770 transitions. [2022-01-19 07:11:22,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:22,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5770 transitions. [2022-01-19 07:11:22,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.27777777777777) internal successors, (5770), 36 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:22,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:22,919 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:22,919 INFO L186 Difference]: Start difference. First operand has 954 places, 702 transitions, 16671 flow. Second operand 36 states and 5770 transitions. [2022-01-19 07:11:22,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 962 places, 801 transitions, 20502 flow [2022-01-19 07:11:23,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 932 places, 801 transitions, 19839 flow, removed 49 selfloop flow, removed 30 redundant places. [2022-01-19 07:11:23,521 INFO L242 Difference]: Finished difference. Result has 954 places, 707 transitions, 16754 flow [2022-01-19 07:11:23,521 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16122, PETRI_DIFFERENCE_MINUEND_PLACES=897, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=16754, PETRI_PLACES=954, PETRI_TRANSITIONS=707} [2022-01-19 07:11:23,521 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 767 predicate places. [2022-01-19 07:11:23,521 INFO L470 AbstractCegarLoop]: Abstraction has has 954 places, 707 transitions, 16754 flow [2022-01-19 07:11:23,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:23,522 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:23,522 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:23,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2022-01-19 07:11:23,522 INFO L402 AbstractCegarLoop]: === Iteration 279 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:23,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:23,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1516969922, now seen corresponding path program 231 times [2022-01-19 07:11:23,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:23,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468055964] [2022-01-19 07:11:23,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:23,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:23,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:23,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:23,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468055964] [2022-01-19 07:11:23,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468055964] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:23,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:23,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:11:23,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83038774] [2022-01-19 07:11:23,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:23,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:11:23,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:23,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:11:23,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:11:23,625 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:11:23,626 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 954 places, 707 transitions, 16754 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:23,626 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:23,626 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:11:23,626 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:24,944 INFO L129 PetriNetUnfolder]: 748/2788 cut-off events. [2022-01-19 07:11:24,944 INFO L130 PetriNetUnfolder]: For 65516/65529 co-relation queries the response was YES. [2022-01-19 07:11:25,011 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19686 conditions, 2788 events. 748/2788 cut-off events. For 65516/65529 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 22070 event pairs, 320 based on Foata normal form. 1/2692 useless extension candidates. Maximal degree in co-relation 19348. Up to 826 conditions per place. [2022-01-19 07:11:25,021 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 378 selfloop transitions, 178 changer transitions 64/761 dead transitions. [2022-01-19 07:11:25,021 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 961 places, 761 transitions, 19217 flow [2022-01-19 07:11:25,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:11:25,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:11:25,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4810 transitions. [2022-01-19 07:11:25,023 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7634920634920634 [2022-01-19 07:11:25,023 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4810 transitions. [2022-01-19 07:11:25,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4810 transitions. [2022-01-19 07:11:25,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:25,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4810 transitions. [2022-01-19 07:11:25,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.33333333333334) internal successors, (4810), 30 states have internal predecessors, (4810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:25,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:25,029 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:25,029 INFO L186 Difference]: Start difference. First operand has 954 places, 707 transitions, 16754 flow. Second operand 30 states and 4810 transitions. [2022-01-19 07:11:25,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 961 places, 761 transitions, 19217 flow [2022-01-19 07:11:25,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 927 places, 761 transitions, 18602 flow, removed 119 selfloop flow, removed 34 redundant places. [2022-01-19 07:11:25,653 INFO L242 Difference]: Finished difference. Result has 938 places, 679 transitions, 15760 flow [2022-01-19 07:11:25,653 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16253, PETRI_DIFFERENCE_MINUEND_PLACES=898, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=707, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=529, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=15760, PETRI_PLACES=938, PETRI_TRANSITIONS=679} [2022-01-19 07:11:25,653 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 751 predicate places. [2022-01-19 07:11:25,653 INFO L470 AbstractCegarLoop]: Abstraction has has 938 places, 679 transitions, 15760 flow [2022-01-19 07:11:25,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:25,654 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:25,654 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:25,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2022-01-19 07:11:25,654 INFO L402 AbstractCegarLoop]: === Iteration 280 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:25,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:25,654 INFO L85 PathProgramCache]: Analyzing trace with hash -2058007792, now seen corresponding path program 232 times [2022-01-19 07:11:25,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:25,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181651537] [2022-01-19 07:11:25,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:25,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:25,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:25,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:25,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:25,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181651537] [2022-01-19 07:11:25,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181651537] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:25,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:25,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:11:25,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646919610] [2022-01-19 07:11:25,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:25,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:11:25,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:25,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:11:25,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:11:25,759 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:11:25,760 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 938 places, 679 transitions, 15760 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:25,760 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:25,760 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:11:25,760 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:27,026 INFO L129 PetriNetUnfolder]: 755/2807 cut-off events. [2022-01-19 07:11:27,026 INFO L130 PetriNetUnfolder]: For 65217/65230 co-relation queries the response was YES. [2022-01-19 07:11:27,089 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19715 conditions, 2807 events. 755/2807 cut-off events. For 65217/65230 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 22281 event pairs, 323 based on Foata normal form. 1/2709 useless extension candidates. Maximal degree in co-relation 19394. Up to 827 conditions per place. [2022-01-19 07:11:27,099 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 386 selfloop transitions, 178 changer transitions 56/761 dead transitions. [2022-01-19 07:11:27,099 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 931 places, 761 transitions, 19200 flow [2022-01-19 07:11:27,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:11:27,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:11:27,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4665 transitions. [2022-01-19 07:11:27,101 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7660098522167488 [2022-01-19 07:11:27,101 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4665 transitions. [2022-01-19 07:11:27,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4665 transitions. [2022-01-19 07:11:27,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:27,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4665 transitions. [2022-01-19 07:11:27,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.86206896551724) internal successors, (4665), 29 states have internal predecessors, (4665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:27,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:27,108 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:27,108 INFO L186 Difference]: Start difference. First operand has 938 places, 679 transitions, 15760 flow. Second operand 29 states and 4665 transitions. [2022-01-19 07:11:27,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 931 places, 761 transitions, 19200 flow [2022-01-19 07:11:27,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 896 places, 761 transitions, 18269 flow, removed 64 selfloop flow, removed 35 redundant places. [2022-01-19 07:11:27,699 INFO L242 Difference]: Finished difference. Result has 910 places, 691 transitions, 15805 flow [2022-01-19 07:11:27,699 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15018, PETRI_DIFFERENCE_MINUEND_PLACES=868, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=15805, PETRI_PLACES=910, PETRI_TRANSITIONS=691} [2022-01-19 07:11:27,699 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 723 predicate places. [2022-01-19 07:11:27,700 INFO L470 AbstractCegarLoop]: Abstraction has has 910 places, 691 transitions, 15805 flow [2022-01-19 07:11:27,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:27,700 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:27,700 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:27,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2022-01-19 07:11:27,700 INFO L402 AbstractCegarLoop]: === Iteration 281 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:27,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:27,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1361885928, now seen corresponding path program 233 times [2022-01-19 07:11:27,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:27,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830592525] [2022-01-19 07:11:27,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:27,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:27,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:27,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:27,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830592525] [2022-01-19 07:11:27,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830592525] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:27,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:27,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:11:27,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277523634] [2022-01-19 07:11:27,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:27,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:11:27,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:27,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:11:27,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:11:27,808 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:11:27,809 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 910 places, 691 transitions, 15805 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:27,809 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:27,809 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:11:27,809 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:29,051 INFO L129 PetriNetUnfolder]: 730/2736 cut-off events. [2022-01-19 07:11:29,051 INFO L130 PetriNetUnfolder]: For 56469/56482 co-relation queries the response was YES. [2022-01-19 07:11:29,103 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18575 conditions, 2736 events. 730/2736 cut-off events. For 56469/56482 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 21515 event pairs, 319 based on Foata normal form. 1/2639 useless extension candidates. Maximal degree in co-relation 18262. Up to 828 conditions per place. [2022-01-19 07:11:29,112 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 288 selfloop transitions, 240 changer transitions 62/731 dead transitions. [2022-01-19 07:11:29,112 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 922 places, 731 transitions, 17710 flow [2022-01-19 07:11:29,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 07:11:29,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 07:11:29,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4334 transitions. [2022-01-19 07:11:29,114 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7643738977072311 [2022-01-19 07:11:29,114 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4334 transitions. [2022-01-19 07:11:29,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4334 transitions. [2022-01-19 07:11:29,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:29,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4334 transitions. [2022-01-19 07:11:29,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 160.5185185185185) internal successors, (4334), 27 states have internal predecessors, (4334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:29,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:29,119 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:29,119 INFO L186 Difference]: Start difference. First operand has 910 places, 691 transitions, 15805 flow. Second operand 27 states and 4334 transitions. [2022-01-19 07:11:29,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 922 places, 731 transitions, 17710 flow [2022-01-19 07:11:29,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 909 places, 731 transitions, 17353 flow, removed 63 selfloop flow, removed 13 redundant places. [2022-01-19 07:11:29,643 INFO L242 Difference]: Finished difference. Result has 916 places, 654 transitions, 14806 flow [2022-01-19 07:11:29,643 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15473, PETRI_DIFFERENCE_MINUEND_PLACES=883, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=14806, PETRI_PLACES=916, PETRI_TRANSITIONS=654} [2022-01-19 07:11:29,643 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 729 predicate places. [2022-01-19 07:11:29,643 INFO L470 AbstractCegarLoop]: Abstraction has has 916 places, 654 transitions, 14806 flow [2022-01-19 07:11:29,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:29,644 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:29,644 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:29,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2022-01-19 07:11:29,644 INFO L402 AbstractCegarLoop]: === Iteration 282 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:29,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:29,644 INFO L85 PathProgramCache]: Analyzing trace with hash 2093778448, now seen corresponding path program 234 times [2022-01-19 07:11:29,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:29,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048527121] [2022-01-19 07:11:29,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:29,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:29,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:29,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:29,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048527121] [2022-01-19 07:11:29,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048527121] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:29,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:29,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:11:29,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646602431] [2022-01-19 07:11:29,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:29,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:11:29,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:29,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:11:29,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:11:29,742 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:11:29,742 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 916 places, 654 transitions, 14806 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:29,742 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:29,742 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:11:29,742 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:30,978 INFO L129 PetriNetUnfolder]: 723/2721 cut-off events. [2022-01-19 07:11:30,979 INFO L130 PetriNetUnfolder]: For 57837/57850 co-relation queries the response was YES. [2022-01-19 07:11:31,055 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18429 conditions, 2721 events. 723/2721 cut-off events. For 57837/57850 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 21448 event pairs, 330 based on Foata normal form. 1/2623 useless extension candidates. Maximal degree in co-relation 18117. Up to 828 conditions per place. [2022-01-19 07:11:31,065 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 345 selfloop transitions, 188 changer transitions 58/732 dead transitions. [2022-01-19 07:11:31,065 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 905 places, 732 transitions, 17798 flow [2022-01-19 07:11:31,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:11:31,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:11:31,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4821 transitions. [2022-01-19 07:11:31,068 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7652380952380953 [2022-01-19 07:11:31,068 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4821 transitions. [2022-01-19 07:11:31,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4821 transitions. [2022-01-19 07:11:31,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:31,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4821 transitions. [2022-01-19 07:11:31,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.7) internal successors, (4821), 30 states have internal predecessors, (4821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:31,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:31,074 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:31,074 INFO L186 Difference]: Start difference. First operand has 916 places, 654 transitions, 14806 flow. Second operand 30 states and 4821 transitions. [2022-01-19 07:11:31,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 905 places, 732 transitions, 17798 flow [2022-01-19 07:11:31,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 867 places, 732 transitions, 16084 flow, removed 30 selfloop flow, removed 38 redundant places. [2022-01-19 07:11:31,547 INFO L242 Difference]: Finished difference. Result has 881 places, 659 transitions, 13779 flow [2022-01-19 07:11:31,547 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13247, PETRI_DIFFERENCE_MINUEND_PLACES=838, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=13779, PETRI_PLACES=881, PETRI_TRANSITIONS=659} [2022-01-19 07:11:31,547 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 694 predicate places. [2022-01-19 07:11:31,547 INFO L470 AbstractCegarLoop]: Abstraction has has 881 places, 659 transitions, 13779 flow [2022-01-19 07:11:31,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:31,548 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:31,548 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:31,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2022-01-19 07:11:31,548 INFO L402 AbstractCegarLoop]: === Iteration 283 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:31,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:31,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1815089882, now seen corresponding path program 235 times [2022-01-19 07:11:31,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:31,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135830037] [2022-01-19 07:11:31,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:31,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:31,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:31,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:31,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:31,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135830037] [2022-01-19 07:11:31,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135830037] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:31,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:31,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:11:31,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299587431] [2022-01-19 07:11:31,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:31,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:11:31,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:31,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:11:31,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:11:31,648 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:11:31,649 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 881 places, 659 transitions, 13779 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:31,649 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:31,649 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:11:31,649 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:32,917 INFO L129 PetriNetUnfolder]: 717/2702 cut-off events. [2022-01-19 07:11:32,917 INFO L130 PetriNetUnfolder]: For 48158/48171 co-relation queries the response was YES. [2022-01-19 07:11:32,975 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17456 conditions, 2702 events. 717/2702 cut-off events. For 48158/48171 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 21324 event pairs, 319 based on Foata normal form. 1/2604 useless extension candidates. Maximal degree in co-relation 17152. Up to 828 conditions per place. [2022-01-19 07:11:32,983 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 347 selfloop transitions, 187 changer transitions 58/733 dead transitions. [2022-01-19 07:11:32,984 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 895 places, 733 transitions, 16630 flow [2022-01-19 07:11:32,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:11:32,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:11:32,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4821 transitions. [2022-01-19 07:11:32,986 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7652380952380953 [2022-01-19 07:11:32,986 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4821 transitions. [2022-01-19 07:11:32,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4821 transitions. [2022-01-19 07:11:32,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:32,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4821 transitions. [2022-01-19 07:11:32,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.7) internal successors, (4821), 30 states have internal predecessors, (4821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:32,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:32,992 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:32,992 INFO L186 Difference]: Start difference. First operand has 881 places, 659 transitions, 13779 flow. Second operand 30 states and 4821 transitions. [2022-01-19 07:11:32,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 895 places, 733 transitions, 16630 flow [2022-01-19 07:11:33,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 881 places, 733 transitions, 16289 flow, removed 76 selfloop flow, removed 14 redundant places. [2022-01-19 07:11:33,437 INFO L242 Difference]: Finished difference. Result has 892 places, 661 transitions, 13953 flow [2022-01-19 07:11:33,437 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13512, PETRI_DIFFERENCE_MINUEND_PLACES=852, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=13953, PETRI_PLACES=892, PETRI_TRANSITIONS=661} [2022-01-19 07:11:33,438 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 705 predicate places. [2022-01-19 07:11:33,438 INFO L470 AbstractCegarLoop]: Abstraction has has 892 places, 661 transitions, 13953 flow [2022-01-19 07:11:33,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:33,438 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:33,438 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:33,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2022-01-19 07:11:33,438 INFO L402 AbstractCegarLoop]: === Iteration 284 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:33,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:33,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1831656044, now seen corresponding path program 236 times [2022-01-19 07:11:33,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:33,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330308667] [2022-01-19 07:11:33,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:33,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:33,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:33,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:33,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330308667] [2022-01-19 07:11:33,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330308667] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:33,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:33,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:11:33,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064384874] [2022-01-19 07:11:33,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:33,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:11:33,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:33,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:11:33,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:11:33,539 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:11:33,540 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 892 places, 661 transitions, 13953 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:33,540 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:33,540 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:11:33,540 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:34,674 INFO L129 PetriNetUnfolder]: 697/2646 cut-off events. [2022-01-19 07:11:34,674 INFO L130 PetriNetUnfolder]: For 51366/51379 co-relation queries the response was YES. [2022-01-19 07:11:34,730 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16925 conditions, 2646 events. 697/2646 cut-off events. For 51366/51379 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 20607 event pairs, 312 based on Foata normal form. 1/2551 useless extension candidates. Maximal degree in co-relation 16620. Up to 827 conditions per place. [2022-01-19 07:11:34,738 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 340 selfloop transitions, 166 changer transitions 60/707 dead transitions. [2022-01-19 07:11:34,738 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 904 places, 707 transitions, 16107 flow [2022-01-19 07:11:34,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 07:11:34,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 07:11:34,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4497 transitions. [2022-01-19 07:11:34,740 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764795918367347 [2022-01-19 07:11:34,740 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4497 transitions. [2022-01-19 07:11:34,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4497 transitions. [2022-01-19 07:11:34,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:34,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4497 transitions. [2022-01-19 07:11:34,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.60714285714286) internal successors, (4497), 28 states have internal predecessors, (4497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:34,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:34,746 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:34,746 INFO L186 Difference]: Start difference. First operand has 892 places, 661 transitions, 13953 flow. Second operand 28 states and 4497 transitions. [2022-01-19 07:11:34,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 904 places, 707 transitions, 16107 flow [2022-01-19 07:11:35,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 889 places, 707 transitions, 15705 flow, removed 50 selfloop flow, removed 15 redundant places. [2022-01-19 07:11:35,181 INFO L242 Difference]: Finished difference. Result has 898 places, 636 transitions, 13304 flow [2022-01-19 07:11:35,181 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13585, PETRI_DIFFERENCE_MINUEND_PLACES=862, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=13304, PETRI_PLACES=898, PETRI_TRANSITIONS=636} [2022-01-19 07:11:35,182 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 711 predicate places. [2022-01-19 07:11:35,182 INFO L470 AbstractCegarLoop]: Abstraction has has 898 places, 636 transitions, 13304 flow [2022-01-19 07:11:35,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:35,182 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:35,182 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:35,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2022-01-19 07:11:35,182 INFO L402 AbstractCegarLoop]: === Iteration 285 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:35,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:35,182 INFO L85 PathProgramCache]: Analyzing trace with hash 2065755434, now seen corresponding path program 237 times [2022-01-19 07:11:35,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:35,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11028241] [2022-01-19 07:11:35,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:35,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:35,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:35,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:35,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11028241] [2022-01-19 07:11:35,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11028241] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:35,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:35,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:11:35,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921042200] [2022-01-19 07:11:35,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:35,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:11:35,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:35,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:11:35,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:11:35,286 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:11:35,287 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 898 places, 636 transitions, 13304 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:35,287 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:35,287 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:11:35,287 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:36,460 INFO L129 PetriNetUnfolder]: 689/2618 cut-off events. [2022-01-19 07:11:36,460 INFO L130 PetriNetUnfolder]: For 51613/51626 co-relation queries the response was YES. [2022-01-19 07:11:36,526 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16719 conditions, 2618 events. 689/2618 cut-off events. For 51613/51626 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 20385 event pairs, 322 based on Foata normal form. 1/2524 useless extension candidates. Maximal degree in co-relation 16415. Up to 827 conditions per place. [2022-01-19 07:11:36,533 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 328 selfloop transitions, 165 changer transitions 58/692 dead transitions. [2022-01-19 07:11:36,534 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 894 places, 692 transitions, 15745 flow [2022-01-19 07:11:36,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:11:36,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:11:36,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4809 transitions. [2022-01-19 07:11:36,536 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7633333333333333 [2022-01-19 07:11:36,536 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4809 transitions. [2022-01-19 07:11:36,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4809 transitions. [2022-01-19 07:11:36,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:36,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4809 transitions. [2022-01-19 07:11:36,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.3) internal successors, (4809), 30 states have internal predecessors, (4809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:36,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:36,542 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:36,542 INFO L186 Difference]: Start difference. First operand has 898 places, 636 transitions, 13304 flow. Second operand 30 states and 4809 transitions. [2022-01-19 07:11:36,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 894 places, 692 transitions, 15745 flow [2022-01-19 07:11:36,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 860 places, 692 transitions, 14745 flow, removed 30 selfloop flow, removed 34 redundant places. [2022-01-19 07:11:36,927 INFO L242 Difference]: Finished difference. Result has 872 places, 623 transitions, 12509 flow [2022-01-19 07:11:36,927 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12419, PETRI_DIFFERENCE_MINUEND_PLACES=831, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=12509, PETRI_PLACES=872, PETRI_TRANSITIONS=623} [2022-01-19 07:11:36,927 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 685 predicate places. [2022-01-19 07:11:36,927 INFO L470 AbstractCegarLoop]: Abstraction has has 872 places, 623 transitions, 12509 flow [2022-01-19 07:11:36,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:36,928 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:36,928 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:36,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2022-01-19 07:11:36,928 INFO L402 AbstractCegarLoop]: === Iteration 286 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:36,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:36,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1405026256, now seen corresponding path program 238 times [2022-01-19 07:11:36,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:36,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404801934] [2022-01-19 07:11:36,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:36,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:36,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:37,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:37,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:37,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404801934] [2022-01-19 07:11:37,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404801934] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:37,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:37,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:11:37,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850745000] [2022-01-19 07:11:37,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:37,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:11:37,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:37,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:11:37,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:11:37,035 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:11:37,036 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 872 places, 623 transitions, 12509 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:37,036 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:37,036 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:11:37,036 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:38,164 INFO L129 PetriNetUnfolder]: 662/2523 cut-off events. [2022-01-19 07:11:38,164 INFO L130 PetriNetUnfolder]: For 40439/40452 co-relation queries the response was YES. [2022-01-19 07:11:38,216 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15455 conditions, 2523 events. 662/2523 cut-off events. For 40439/40452 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 19419 event pairs, 312 based on Foata normal form. 1/2429 useless extension candidates. Maximal degree in co-relation 15157. Up to 821 conditions per place. [2022-01-19 07:11:38,223 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 310 selfloop transitions, 139 changer transitions 61/651 dead transitions. [2022-01-19 07:11:38,223 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 873 places, 651 transitions, 13911 flow [2022-01-19 07:11:38,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:11:38,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:11:38,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4639 transitions. [2022-01-19 07:11:38,226 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7617405582922824 [2022-01-19 07:11:38,226 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4639 transitions. [2022-01-19 07:11:38,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4639 transitions. [2022-01-19 07:11:38,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:38,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4639 transitions. [2022-01-19 07:11:38,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 159.9655172413793) internal successors, (4639), 29 states have internal predecessors, (4639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:38,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:38,231 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:38,232 INFO L186 Difference]: Start difference. First operand has 872 places, 623 transitions, 12509 flow. Second operand 29 states and 4639 transitions. [2022-01-19 07:11:38,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 873 places, 651 transitions, 13911 flow [2022-01-19 07:11:38,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 842 places, 651 transitions, 13328 flow, removed 25 selfloop flow, removed 31 redundant places. [2022-01-19 07:11:38,604 INFO L242 Difference]: Finished difference. Result has 849 places, 579 transitions, 11049 flow [2022-01-19 07:11:38,604 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11953, PETRI_DIFFERENCE_MINUEND_PLACES=814, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=11049, PETRI_PLACES=849, PETRI_TRANSITIONS=579} [2022-01-19 07:11:38,605 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 662 predicate places. [2022-01-19 07:11:38,605 INFO L470 AbstractCegarLoop]: Abstraction has has 849 places, 579 transitions, 11049 flow [2022-01-19 07:11:38,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:38,605 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:38,605 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:38,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2022-01-19 07:11:38,605 INFO L402 AbstractCegarLoop]: === Iteration 287 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:38,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:38,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1853911364, now seen corresponding path program 239 times [2022-01-19 07:11:38,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:38,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164588473] [2022-01-19 07:11:38,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:38,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:38,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:38,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:38,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:38,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164588473] [2022-01-19 07:11:38,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164588473] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:38,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:38,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:11:38,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490285641] [2022-01-19 07:11:38,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:38,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:11:38,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:38,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:11:38,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:11:38,726 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:11:38,726 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 849 places, 579 transitions, 11049 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:38,726 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:38,727 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:11:38,727 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:39,851 INFO L129 PetriNetUnfolder]: 656/2519 cut-off events. [2022-01-19 07:11:39,852 INFO L130 PetriNetUnfolder]: For 39260/39273 co-relation queries the response was YES. [2022-01-19 07:11:39,911 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15129 conditions, 2519 events. 656/2519 cut-off events. For 39260/39273 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 19411 event pairs, 319 based on Foata normal form. 1/2426 useless extension candidates. Maximal degree in co-relation 14844. Up to 818 conditions per place. [2022-01-19 07:11:39,918 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 322 selfloop transitions, 127 changer transitions 58/648 dead transitions. [2022-01-19 07:11:39,918 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 826 places, 648 transitions, 13608 flow [2022-01-19 07:11:39,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:11:39,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:11:39,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4819 transitions. [2022-01-19 07:11:39,920 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7649206349206349 [2022-01-19 07:11:39,920 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4819 transitions. [2022-01-19 07:11:39,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4819 transitions. [2022-01-19 07:11:39,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:39,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4819 transitions. [2022-01-19 07:11:39,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.63333333333333) internal successors, (4819), 30 states have internal predecessors, (4819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:39,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:39,926 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:39,926 INFO L186 Difference]: Start difference. First operand has 849 places, 579 transitions, 11049 flow. Second operand 30 states and 4819 transitions. [2022-01-19 07:11:39,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 826 places, 648 transitions, 13608 flow [2022-01-19 07:11:40,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 792 places, 648 transitions, 12467 flow, removed 26 selfloop flow, removed 34 redundant places. [2022-01-19 07:11:40,246 INFO L242 Difference]: Finished difference. Result has 799 places, 578 transitions, 10271 flow [2022-01-19 07:11:40,246 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10038, PETRI_DIFFERENCE_MINUEND_PLACES=763, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=579, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=10271, PETRI_PLACES=799, PETRI_TRANSITIONS=578} [2022-01-19 07:11:40,247 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 612 predicate places. [2022-01-19 07:11:40,247 INFO L470 AbstractCegarLoop]: Abstraction has has 799 places, 578 transitions, 10271 flow [2022-01-19 07:11:40,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:40,247 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:40,247 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:40,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2022-01-19 07:11:40,247 INFO L402 AbstractCegarLoop]: === Iteration 288 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:40,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:40,247 INFO L85 PathProgramCache]: Analyzing trace with hash -681707706, now seen corresponding path program 240 times [2022-01-19 07:11:40,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:40,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513172780] [2022-01-19 07:11:40,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:40,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:40,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:40,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:40,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513172780] [2022-01-19 07:11:40,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513172780] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:40,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:40,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:11:40,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132291301] [2022-01-19 07:11:40,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:40,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:11:40,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:40,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:11:40,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:11:40,339 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:11:40,340 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 799 places, 578 transitions, 10271 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:40,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:40,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:11:40,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:41,391 INFO L129 PetriNetUnfolder]: 641/2470 cut-off events. [2022-01-19 07:11:41,391 INFO L130 PetriNetUnfolder]: For 34067/34080 co-relation queries the response was YES. [2022-01-19 07:11:41,439 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14032 conditions, 2470 events. 641/2470 cut-off events. For 34067/34080 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 18917 event pairs, 298 based on Foata normal form. 1/2381 useless extension candidates. Maximal degree in co-relation 13760. Up to 814 conditions per place. [2022-01-19 07:11:41,446 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 331 selfloop transitions, 114 changer transitions 63/649 dead transitions. [2022-01-19 07:11:41,446 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 813 places, 649 transitions, 12274 flow [2022-01-19 07:11:41,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:11:41,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:11:41,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4806 transitions. [2022-01-19 07:11:41,449 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7628571428571429 [2022-01-19 07:11:41,449 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4806 transitions. [2022-01-19 07:11:41,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4806 transitions. [2022-01-19 07:11:41,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:41,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4806 transitions. [2022-01-19 07:11:41,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.2) internal successors, (4806), 30 states have internal predecessors, (4806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:41,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:41,455 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:41,455 INFO L186 Difference]: Start difference. First operand has 799 places, 578 transitions, 10271 flow. Second operand 30 states and 4806 transitions. [2022-01-19 07:11:41,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 813 places, 649 transitions, 12274 flow [2022-01-19 07:11:41,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 786 places, 649 transitions, 11807 flow, removed 64 selfloop flow, removed 27 redundant places. [2022-01-19 07:11:41,732 INFO L242 Difference]: Finished difference. Result has 796 places, 553 transitions, 9556 flow [2022-01-19 07:11:41,732 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9830, PETRI_DIFFERENCE_MINUEND_PLACES=757, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=9556, PETRI_PLACES=796, PETRI_TRANSITIONS=553} [2022-01-19 07:11:41,733 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 609 predicate places. [2022-01-19 07:11:41,733 INFO L470 AbstractCegarLoop]: Abstraction has has 796 places, 553 transitions, 9556 flow [2022-01-19 07:11:41,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:41,733 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:41,733 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:41,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2022-01-19 07:11:41,733 INFO L402 AbstractCegarLoop]: === Iteration 289 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:41,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:41,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1626717332, now seen corresponding path program 241 times [2022-01-19 07:11:41,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:41,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503020303] [2022-01-19 07:11:41,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:41,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:41,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:41,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:41,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:41,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503020303] [2022-01-19 07:11:41,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503020303] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:41,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:41,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:11:41,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019411598] [2022-01-19 07:11:41,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:41,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:11:41,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:41,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:11:41,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:11:41,843 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:11:41,844 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 796 places, 553 transitions, 9556 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:41,844 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:41,844 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:11:41,844 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:42,825 INFO L129 PetriNetUnfolder]: 610/2354 cut-off events. [2022-01-19 07:11:42,825 INFO L130 PetriNetUnfolder]: For 28125/28138 co-relation queries the response was YES. [2022-01-19 07:11:42,868 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13118 conditions, 2354 events. 610/2354 cut-off events. For 28125/28138 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 17849 event pairs, 294 based on Foata normal form. 1/2264 useless extension candidates. Maximal degree in co-relation 12855. Up to 805 conditions per place. [2022-01-19 07:11:42,874 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 309 selfloop transitions, 85 changer transitions 65/600 dead transitions. [2022-01-19 07:11:42,875 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 790 places, 600 transitions, 10783 flow [2022-01-19 07:11:42,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 07:11:42,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 07:11:42,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4476 transitions. [2022-01-19 07:11:42,877 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7612244897959184 [2022-01-19 07:11:42,877 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4476 transitions. [2022-01-19 07:11:42,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4476 transitions. [2022-01-19 07:11:42,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:42,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4476 transitions. [2022-01-19 07:11:42,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 159.85714285714286) internal successors, (4476), 28 states have internal predecessors, (4476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:42,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:42,882 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:42,882 INFO L186 Difference]: Start difference. First operand has 796 places, 553 transitions, 9556 flow. Second operand 28 states and 4476 transitions. [2022-01-19 07:11:42,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 790 places, 600 transitions, 10783 flow [2022-01-19 07:11:43,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 759 places, 600 transitions, 10204 flow, removed 22 selfloop flow, removed 31 redundant places. [2022-01-19 07:11:43,125 INFO L242 Difference]: Finished difference. Result has 764 places, 502 transitions, 7970 flow [2022-01-19 07:11:43,126 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8995, PETRI_DIFFERENCE_MINUEND_PLACES=732, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=7970, PETRI_PLACES=764, PETRI_TRANSITIONS=502} [2022-01-19 07:11:43,126 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 577 predicate places. [2022-01-19 07:11:43,126 INFO L470 AbstractCegarLoop]: Abstraction has has 764 places, 502 transitions, 7970 flow [2022-01-19 07:11:43,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:43,126 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:43,126 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:43,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2022-01-19 07:11:43,126 INFO L402 AbstractCegarLoop]: === Iteration 290 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:43,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:43,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1293276046, now seen corresponding path program 242 times [2022-01-19 07:11:43,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:43,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326955992] [2022-01-19 07:11:43,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:43,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:43,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:43,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:43,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326955992] [2022-01-19 07:11:43,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326955992] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:43,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:43,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:11:43,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623157194] [2022-01-19 07:11:43,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:43,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:11:43,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:43,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:11:43,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:11:43,226 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:11:43,227 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 764 places, 502 transitions, 7970 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:43,227 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:43,227 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:11:43,227 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:44,272 INFO L129 PetriNetUnfolder]: 609/2357 cut-off events. [2022-01-19 07:11:44,272 INFO L130 PetriNetUnfolder]: For 26736/26749 co-relation queries the response was YES. [2022-01-19 07:11:44,312 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12670 conditions, 2357 events. 609/2357 cut-off events. For 26736/26749 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 17821 event pairs, 298 based on Foata normal form. 1/2270 useless extension candidates. Maximal degree in co-relation 12420. Up to 805 conditions per place. [2022-01-19 07:11:44,318 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 294 selfloop transitions, 89 changer transitions 70/594 dead transitions. [2022-01-19 07:11:44,318 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 737 places, 594 transitions, 10429 flow [2022-01-19 07:11:44,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 07:11:44,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 07:11:44,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5598 transitions. [2022-01-19 07:11:44,320 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616326530612245 [2022-01-19 07:11:44,320 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5598 transitions. [2022-01-19 07:11:44,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5598 transitions. [2022-01-19 07:11:44,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:44,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5598 transitions. [2022-01-19 07:11:44,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 159.94285714285715) internal successors, (5598), 35 states have internal predecessors, (5598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:44,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:44,327 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:44,327 INFO L186 Difference]: Start difference. First operand has 764 places, 502 transitions, 7970 flow. Second operand 35 states and 5598 transitions. [2022-01-19 07:11:44,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 737 places, 594 transitions, 10429 flow [2022-01-19 07:11:44,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 708 places, 594 transitions, 9486 flow, removed 28 selfloop flow, removed 29 redundant places. [2022-01-19 07:11:44,527 INFO L242 Difference]: Finished difference. Result has 725 places, 497 transitions, 7312 flow [2022-01-19 07:11:44,527 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7192, PETRI_DIFFERENCE_MINUEND_PLACES=674, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=7312, PETRI_PLACES=725, PETRI_TRANSITIONS=497} [2022-01-19 07:11:44,527 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 538 predicate places. [2022-01-19 07:11:44,527 INFO L470 AbstractCegarLoop]: Abstraction has has 725 places, 497 transitions, 7312 flow [2022-01-19 07:11:44,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:44,528 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:44,528 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:44,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2022-01-19 07:11:44,528 INFO L402 AbstractCegarLoop]: === Iteration 291 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:44,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:44,528 INFO L85 PathProgramCache]: Analyzing trace with hash -674375430, now seen corresponding path program 243 times [2022-01-19 07:11:44,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:44,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893152501] [2022-01-19 07:11:44,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:44,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:44,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:44,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:44,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893152501] [2022-01-19 07:11:44,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893152501] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:44,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:44,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:11:44,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338879665] [2022-01-19 07:11:44,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:44,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:11:44,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:44,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:11:44,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:11:44,624 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:11:44,624 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 725 places, 497 transitions, 7312 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:44,625 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:44,625 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:11:44,625 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:45,518 INFO L129 PetriNetUnfolder]: 598/2329 cut-off events. [2022-01-19 07:11:45,518 INFO L130 PetriNetUnfolder]: For 24119/24132 co-relation queries the response was YES. [2022-01-19 07:11:45,557 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11679 conditions, 2329 events. 598/2329 cut-off events. For 24119/24132 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 17514 event pairs, 302 based on Foata normal form. 1/2242 useless extension candidates. Maximal degree in co-relation 11428. Up to 803 conditions per place. [2022-01-19 07:11:45,563 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 287 selfloop transitions, 78 changer transitions 62/568 dead transitions. [2022-01-19 07:11:45,563 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 732 places, 568 transitions, 9235 flow [2022-01-19 07:11:45,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:11:45,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:11:45,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4653 transitions. [2022-01-19 07:11:45,565 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7640394088669951 [2022-01-19 07:11:45,565 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4653 transitions. [2022-01-19 07:11:45,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4653 transitions. [2022-01-19 07:11:45,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:45,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4653 transitions. [2022-01-19 07:11:45,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.44827586206895) internal successors, (4653), 29 states have internal predecessors, (4653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:45,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:45,571 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:45,571 INFO L186 Difference]: Start difference. First operand has 725 places, 497 transitions, 7312 flow. Second operand 29 states and 4653 transitions. [2022-01-19 07:11:45,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 732 places, 568 transitions, 9235 flow [2022-01-19 07:11:45,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 695 places, 568 transitions, 8860 flow, removed 37 selfloop flow, removed 37 redundant places. [2022-01-19 07:11:45,752 INFO L242 Difference]: Finished difference. Result has 706 places, 484 transitions, 6931 flow [2022-01-19 07:11:45,752 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6997, PETRI_DIFFERENCE_MINUEND_PLACES=667, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6931, PETRI_PLACES=706, PETRI_TRANSITIONS=484} [2022-01-19 07:11:45,752 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 519 predicate places. [2022-01-19 07:11:45,752 INFO L470 AbstractCegarLoop]: Abstraction has has 706 places, 484 transitions, 6931 flow [2022-01-19 07:11:45,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:45,752 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:45,753 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:45,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2022-01-19 07:11:45,753 INFO L402 AbstractCegarLoop]: === Iteration 292 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:45,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:45,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1860517572, now seen corresponding path program 244 times [2022-01-19 07:11:45,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:45,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769481590] [2022-01-19 07:11:45,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:45,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:45,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:45,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:45,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769481590] [2022-01-19 07:11:45,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769481590] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:45,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:45,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:11:45,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009092544] [2022-01-19 07:11:45,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:45,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:11:45,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:45,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:11:45,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:11:45,855 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:11:45,856 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 706 places, 484 transitions, 6931 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:45,856 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:45,856 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:11:45,856 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:46,862 INFO L129 PetriNetUnfolder]: 591/2309 cut-off events. [2022-01-19 07:11:46,862 INFO L130 PetriNetUnfolder]: For 23466/23479 co-relation queries the response was YES. [2022-01-19 07:11:46,911 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11371 conditions, 2309 events. 591/2309 cut-off events. For 23466/23479 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 17387 event pairs, 294 based on Foata normal form. 1/2221 useless extension candidates. Maximal degree in co-relation 11134. Up to 801 conditions per place. [2022-01-19 07:11:46,916 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 276 selfloop transitions, 76 changer transitions 62/555 dead transitions. [2022-01-19 07:11:46,916 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 708 places, 555 transitions, 8824 flow [2022-01-19 07:11:46,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:11:46,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:11:46,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4653 transitions. [2022-01-19 07:11:46,919 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7640394088669951 [2022-01-19 07:11:46,919 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4653 transitions. [2022-01-19 07:11:46,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4653 transitions. [2022-01-19 07:11:46,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:46,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4653 transitions. [2022-01-19 07:11:46,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.44827586206895) internal successors, (4653), 29 states have internal predecessors, (4653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:46,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:46,926 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:46,926 INFO L186 Difference]: Start difference. First operand has 706 places, 484 transitions, 6931 flow. Second operand 29 states and 4653 transitions. [2022-01-19 07:11:46,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 708 places, 555 transitions, 8824 flow [2022-01-19 07:11:47,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 680 places, 555 transitions, 8494 flow, removed 20 selfloop flow, removed 28 redundant places. [2022-01-19 07:11:47,142 INFO L242 Difference]: Finished difference. Result has 691 places, 471 transitions, 6599 flow [2022-01-19 07:11:47,143 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6659, PETRI_DIFFERENCE_MINUEND_PLACES=652, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6599, PETRI_PLACES=691, PETRI_TRANSITIONS=471} [2022-01-19 07:11:47,143 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 504 predicate places. [2022-01-19 07:11:47,143 INFO L470 AbstractCegarLoop]: Abstraction has has 691 places, 471 transitions, 6599 flow [2022-01-19 07:11:47,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:47,143 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:47,143 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:47,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2022-01-19 07:11:47,143 INFO L402 AbstractCegarLoop]: === Iteration 293 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:47,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:47,144 INFO L85 PathProgramCache]: Analyzing trace with hash -242289566, now seen corresponding path program 245 times [2022-01-19 07:11:47,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:47,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97059363] [2022-01-19 07:11:47,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:47,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:47,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:47,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:47,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97059363] [2022-01-19 07:11:47,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97059363] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:47,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:47,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:11:47,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872825420] [2022-01-19 07:11:47,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:47,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:11:47,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:47,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:11:47,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:11:47,256 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:11:47,257 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 691 places, 471 transitions, 6599 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:47,257 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:47,257 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:11:47,257 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:48,258 INFO L129 PetriNetUnfolder]: 564/2209 cut-off events. [2022-01-19 07:11:48,259 INFO L130 PetriNetUnfolder]: For 20147/20160 co-relation queries the response was YES. [2022-01-19 07:11:48,302 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10559 conditions, 2209 events. 564/2209 cut-off events. For 20147/20160 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 16312 event pairs, 296 based on Foata normal form. 1/2123 useless extension candidates. Maximal degree in co-relation 10326. Up to 794 conditions per place. [2022-01-19 07:11:48,308 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 257 selfloop transitions, 51 changer transitions 65/514 dead transitions. [2022-01-19 07:11:48,308 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 514 transitions, 7739 flow [2022-01-19 07:11:48,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:11:48,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:11:48,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4796 transitions. [2022-01-19 07:11:48,311 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7612698412698413 [2022-01-19 07:11:48,311 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4796 transitions. [2022-01-19 07:11:48,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4796 transitions. [2022-01-19 07:11:48,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:48,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4796 transitions. [2022-01-19 07:11:48,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.86666666666667) internal successors, (4796), 30 states have internal predecessors, (4796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:48,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:48,317 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:48,317 INFO L186 Difference]: Start difference. First operand has 691 places, 471 transitions, 6599 flow. Second operand 30 states and 4796 transitions. [2022-01-19 07:11:48,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 514 transitions, 7739 flow [2022-01-19 07:11:48,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 514 transitions, 7444 flow, removed 20 selfloop flow, removed 28 redundant places. [2022-01-19 07:11:48,458 INFO L242 Difference]: Finished difference. Result has 673 places, 427 transitions, 5564 flow [2022-01-19 07:11:48,458 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6332, PETRI_DIFFERENCE_MINUEND_PLACES=637, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=5564, PETRI_PLACES=673, PETRI_TRANSITIONS=427} [2022-01-19 07:11:48,458 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 486 predicate places. [2022-01-19 07:11:48,458 INFO L470 AbstractCegarLoop]: Abstraction has has 673 places, 427 transitions, 5564 flow [2022-01-19 07:11:48,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:48,459 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:48,459 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:48,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2022-01-19 07:11:48,459 INFO L402 AbstractCegarLoop]: === Iteration 294 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:48,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:48,459 INFO L85 PathProgramCache]: Analyzing trace with hash -845688752, now seen corresponding path program 246 times [2022-01-19 07:11:48,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:48,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464284551] [2022-01-19 07:11:48,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:48,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:48,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:48,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:48,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464284551] [2022-01-19 07:11:48,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464284551] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:48,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:48,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:11:48,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306151400] [2022-01-19 07:11:48,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:48,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:11:48,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:48,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:11:48,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:11:48,559 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:11:48,560 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 673 places, 427 transitions, 5564 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:48,560 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:48,560 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:11:48,560 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:49,385 INFO L129 PetriNetUnfolder]: 533/2087 cut-off events. [2022-01-19 07:11:49,386 INFO L130 PetriNetUnfolder]: For 16973/16986 co-relation queries the response was YES. [2022-01-19 07:11:49,422 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9613 conditions, 2087 events. 533/2087 cut-off events. For 16973/16986 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 15041 event pairs, 291 based on Foata normal form. 1/2002 useless extension candidates. Maximal degree in co-relation 9388. Up to 785 conditions per place. [2022-01-19 07:11:49,427 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 223 selfloop transitions, 32 changer transitions 66/462 dead transitions. [2022-01-19 07:11:49,427 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 651 places, 462 transitions, 6419 flow [2022-01-19 07:11:49,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:11:49,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:11:49,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4779 transitions. [2022-01-19 07:11:49,430 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7585714285714286 [2022-01-19 07:11:49,430 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4779 transitions. [2022-01-19 07:11:49,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4779 transitions. [2022-01-19 07:11:49,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:49,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4779 transitions. [2022-01-19 07:11:49,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.3) internal successors, (4779), 30 states have internal predecessors, (4779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:49,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:49,436 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:49,436 INFO L186 Difference]: Start difference. First operand has 673 places, 427 transitions, 5564 flow. Second operand 30 states and 4779 transitions. [2022-01-19 07:11:49,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 651 places, 462 transitions, 6419 flow [2022-01-19 07:11:49,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 623 places, 462 transitions, 6077 flow, removed 17 selfloop flow, removed 28 redundant places. [2022-01-19 07:11:49,558 INFO L242 Difference]: Finished difference. Result has 628 places, 374 transitions, 4310 flow [2022-01-19 07:11:49,558 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5235, PETRI_DIFFERENCE_MINUEND_PLACES=594, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=4310, PETRI_PLACES=628, PETRI_TRANSITIONS=374} [2022-01-19 07:11:49,558 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 441 predicate places. [2022-01-19 07:11:49,558 INFO L470 AbstractCegarLoop]: Abstraction has has 628 places, 374 transitions, 4310 flow [2022-01-19 07:11:49,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:49,559 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:49,559 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:49,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2022-01-19 07:11:49,559 INFO L402 AbstractCegarLoop]: === Iteration 295 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:49,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:49,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1565416138, now seen corresponding path program 247 times [2022-01-19 07:11:49,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:49,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103229787] [2022-01-19 07:11:49,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:49,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:49,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:49,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:49,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103229787] [2022-01-19 07:11:49,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103229787] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:49,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:49,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:11:49,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817420826] [2022-01-19 07:11:49,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:49,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:11:49,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:49,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:11:49,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:11:49,661 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:11:49,662 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 628 places, 374 transitions, 4310 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:49,662 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:49,662 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:11:49,662 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:50,556 INFO L129 PetriNetUnfolder]: 532/2109 cut-off events. [2022-01-19 07:11:50,556 INFO L130 PetriNetUnfolder]: For 15026/15039 co-relation queries the response was YES. [2022-01-19 07:11:50,598 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9354 conditions, 2109 events. 532/2109 cut-off events. For 15026/15039 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 15281 event pairs, 281 based on Foata normal form. 1/2027 useless extension candidates. Maximal degree in co-relation 9138. Up to 785 conditions per place. [2022-01-19 07:11:50,603 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 178 selfloop transitions, 66 changer transitions 68/453 dead transitions. [2022-01-19 07:11:50,604 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 453 transitions, 6164 flow [2022-01-19 07:11:50,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 07:11:50,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 07:11:50,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5750 transitions. [2022-01-19 07:11:50,606 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7605820105820106 [2022-01-19 07:11:50,606 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5750 transitions. [2022-01-19 07:11:50,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5750 transitions. [2022-01-19 07:11:50,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:50,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5750 transitions. [2022-01-19 07:11:50,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 159.72222222222223) internal successors, (5750), 36 states have internal predecessors, (5750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:50,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:50,614 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:50,614 INFO L186 Difference]: Start difference. First operand has 628 places, 374 transitions, 4310 flow. Second operand 36 states and 5750 transitions. [2022-01-19 07:11:50,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 453 transitions, 6164 flow [2022-01-19 07:11:50,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 453 transitions, 5763 flow, removed 30 selfloop flow, removed 25 redundant places. [2022-01-19 07:11:50,715 INFO L242 Difference]: Finished difference. Result has 587 places, 369 transitions, 4110 flow [2022-01-19 07:11:50,715 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4016, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=4110, PETRI_PLACES=587, PETRI_TRANSITIONS=369} [2022-01-19 07:11:50,715 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 400 predicate places. [2022-01-19 07:11:50,715 INFO L470 AbstractCegarLoop]: Abstraction has has 587 places, 369 transitions, 4110 flow [2022-01-19 07:11:50,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:50,716 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:50,716 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:50,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2022-01-19 07:11:50,716 INFO L402 AbstractCegarLoop]: === Iteration 296 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:50,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:50,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1065282028, now seen corresponding path program 248 times [2022-01-19 07:11:50,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:50,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970998288] [2022-01-19 07:11:50,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:50,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:50,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:50,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:50,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:50,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970998288] [2022-01-19 07:11:50,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970998288] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:50,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:50,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:11:50,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755793739] [2022-01-19 07:11:50,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:50,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:11:50,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:50,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:11:50,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:11:50,825 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:11:50,826 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 369 transitions, 4110 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:50,826 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:50,826 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:11:50,826 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:51,639 INFO L129 PetriNetUnfolder]: 519/2060 cut-off events. [2022-01-19 07:11:51,639 INFO L130 PetriNetUnfolder]: For 13174/13187 co-relation queries the response was YES. [2022-01-19 07:11:51,674 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8768 conditions, 2060 events. 519/2060 cut-off events. For 13174/13187 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 14827 event pairs, 294 based on Foata normal form. 1/1975 useless extension candidates. Maximal degree in co-relation 8551. Up to 783 conditions per place. [2022-01-19 07:11:51,679 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 163 selfloop transitions, 63 changer transitions 60/427 dead transitions. [2022-01-19 07:11:51,679 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 427 transitions, 5532 flow [2022-01-19 07:11:51,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:11:51,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:11:51,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4812 transitions. [2022-01-19 07:11:51,681 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7638095238095238 [2022-01-19 07:11:51,681 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4812 transitions. [2022-01-19 07:11:51,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4812 transitions. [2022-01-19 07:11:51,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:51,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4812 transitions. [2022-01-19 07:11:51,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.4) internal successors, (4812), 30 states have internal predecessors, (4812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:51,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:51,687 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:51,687 INFO L186 Difference]: Start difference. First operand has 587 places, 369 transitions, 4110 flow. Second operand 30 states and 4812 transitions. [2022-01-19 07:11:51,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 427 transitions, 5532 flow [2022-01-19 07:11:51,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 559 places, 427 transitions, 5250 flow, removed 34 selfloop flow, removed 35 redundant places. [2022-01-19 07:11:51,769 INFO L242 Difference]: Finished difference. Result has 571 places, 356 transitions, 3788 flow [2022-01-19 07:11:51,770 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3869, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3788, PETRI_PLACES=571, PETRI_TRANSITIONS=356} [2022-01-19 07:11:51,770 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 384 predicate places. [2022-01-19 07:11:51,770 INFO L470 AbstractCegarLoop]: Abstraction has has 571 places, 356 transitions, 3788 flow [2022-01-19 07:11:51,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:51,770 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:51,770 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:51,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2022-01-19 07:11:51,770 INFO L402 AbstractCegarLoop]: === Iteration 297 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:51,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:51,771 INFO L85 PathProgramCache]: Analyzing trace with hash 198379456, now seen corresponding path program 249 times [2022-01-19 07:11:51,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:51,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015738573] [2022-01-19 07:11:51,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:51,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:51,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:51,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:51,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015738573] [2022-01-19 07:11:51,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015738573] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:51,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:51,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:11:51,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856126645] [2022-01-19 07:11:51,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:51,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:11:51,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:51,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:11:51,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:11:51,877 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:11:51,878 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 571 places, 356 transitions, 3788 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:51,878 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:51,878 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:11:51,878 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:52,649 INFO L129 PetriNetUnfolder]: 514/2038 cut-off events. [2022-01-19 07:11:52,649 INFO L130 PetriNetUnfolder]: For 13056/13069 co-relation queries the response was YES. [2022-01-19 07:11:52,678 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8489 conditions, 2038 events. 514/2038 cut-off events. For 13056/13069 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14637 event pairs, 285 based on Foata normal form. 1/1955 useless extension candidates. Maximal degree in co-relation 8283. Up to 781 conditions per place. [2022-01-19 07:11:52,683 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 159 selfloop transitions, 54 changer transitions 60/414 dead transitions. [2022-01-19 07:11:52,683 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 414 transitions, 5170 flow [2022-01-19 07:11:52,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:11:52,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:11:52,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4805 transitions. [2022-01-19 07:11:52,685 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7626984126984127 [2022-01-19 07:11:52,685 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4805 transitions. [2022-01-19 07:11:52,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4805 transitions. [2022-01-19 07:11:52,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:52,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4805 transitions. [2022-01-19 07:11:52,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.16666666666666) internal successors, (4805), 30 states have internal predecessors, (4805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:52,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:52,691 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:52,691 INFO L186 Difference]: Start difference. First operand has 571 places, 356 transitions, 3788 flow. Second operand 30 states and 4805 transitions. [2022-01-19 07:11:52,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 414 transitions, 5170 flow [2022-01-19 07:11:52,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 414 transitions, 4903 flow, removed 23 selfloop flow, removed 29 redundant places. [2022-01-19 07:11:52,765 INFO L242 Difference]: Finished difference. Result has 556 places, 343 transitions, 3486 flow [2022-01-19 07:11:52,765 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3568, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3486, PETRI_PLACES=556, PETRI_TRANSITIONS=343} [2022-01-19 07:11:52,765 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 369 predicate places. [2022-01-19 07:11:52,765 INFO L470 AbstractCegarLoop]: Abstraction has has 556 places, 343 transitions, 3486 flow [2022-01-19 07:11:52,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:52,766 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:52,766 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:52,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2022-01-19 07:11:52,766 INFO L402 AbstractCegarLoop]: === Iteration 298 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:52,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:52,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1992795230, now seen corresponding path program 250 times [2022-01-19 07:11:52,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:52,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636913891] [2022-01-19 07:11:52,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:52,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:52,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:52,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:52,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636913891] [2022-01-19 07:11:52,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636913891] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:52,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:52,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:11:52,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510204492] [2022-01-19 07:11:52,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:52,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:11:52,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:52,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:11:52,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:11:52,869 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:11:52,869 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 343 transitions, 3486 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:52,869 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:52,869 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:11:52,869 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:53,620 INFO L129 PetriNetUnfolder]: 483/1937 cut-off events. [2022-01-19 07:11:53,620 INFO L130 PetriNetUnfolder]: For 10762/10775 co-relation queries the response was YES. [2022-01-19 07:11:53,640 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7726 conditions, 1937 events. 483/1937 cut-off events. For 10762/10775 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 13610 event pairs, 289 based on Foata normal form. 1/1854 useless extension candidates. Maximal degree in co-relation 7526. Up to 774 conditions per place. [2022-01-19 07:11:53,644 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 140 selfloop transitions, 25 changer transitions 64/370 dead transitions. [2022-01-19 07:11:53,644 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 370 transitions, 4157 flow [2022-01-19 07:11:53,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:11:53,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:11:53,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4631 transitions. [2022-01-19 07:11:53,646 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7604269293924466 [2022-01-19 07:11:53,646 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4631 transitions. [2022-01-19 07:11:53,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4631 transitions. [2022-01-19 07:11:53,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:53,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4631 transitions. [2022-01-19 07:11:53,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 159.68965517241378) internal successors, (4631), 29 states have internal predecessors, (4631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:53,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:53,652 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:53,652 INFO L186 Difference]: Start difference. First operand has 556 places, 343 transitions, 3486 flow. Second operand 29 states and 4631 transitions. [2022-01-19 07:11:53,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 370 transitions, 4157 flow [2022-01-19 07:11:53,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 370 transitions, 3943 flow, removed 22 selfloop flow, removed 29 redundant places. [2022-01-19 07:11:53,710 INFO L242 Difference]: Finished difference. Result has 535 places, 295 transitions, 2515 flow [2022-01-19 07:11:53,710 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3292, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2515, PETRI_PLACES=535, PETRI_TRANSITIONS=295} [2022-01-19 07:11:53,710 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 348 predicate places. [2022-01-19 07:11:53,711 INFO L470 AbstractCegarLoop]: Abstraction has has 535 places, 295 transitions, 2515 flow [2022-01-19 07:11:53,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:53,711 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:53,711 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:53,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2022-01-19 07:11:53,711 INFO L402 AbstractCegarLoop]: === Iteration 299 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:53,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:53,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1665717460, now seen corresponding path program 251 times [2022-01-19 07:11:53,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:53,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867907701] [2022-01-19 07:11:53,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:53,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:53,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:53,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:53,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867907701] [2022-01-19 07:11:53,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867907701] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:53,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:53,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:11:53,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227348850] [2022-01-19 07:11:53,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:53,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:11:53,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:53,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:11:53,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:11:53,810 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:11:53,811 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 295 transitions, 2515 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:53,811 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:53,811 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:11:53,811 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:54,476 INFO L129 PetriNetUnfolder]: 458/1847 cut-off events. [2022-01-19 07:11:54,476 INFO L130 PetriNetUnfolder]: For 8843/8856 co-relation queries the response was YES. [2022-01-19 07:11:54,506 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7040 conditions, 1847 events. 458/1847 cut-off events. For 8843/8856 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 12819 event pairs, 272 based on Foata normal form. 1/1767 useless extension candidates. Maximal degree in co-relation 6851. Up to 769 conditions per place. [2022-01-19 07:11:54,511 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 102 selfloop transitions, 27 changer transitions 62/332 dead transitions. [2022-01-19 07:11:54,511 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 332 transitions, 3298 flow [2022-01-19 07:11:54,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:11:54,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:11:54,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4636 transitions. [2022-01-19 07:11:54,514 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.761247947454844 [2022-01-19 07:11:54,514 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4636 transitions. [2022-01-19 07:11:54,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4636 transitions. [2022-01-19 07:11:54,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:54,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4636 transitions. [2022-01-19 07:11:54,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 159.86206896551724) internal successors, (4636), 29 states have internal predecessors, (4636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:54,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:54,521 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:54,521 INFO L186 Difference]: Start difference. First operand has 535 places, 295 transitions, 2515 flow. Second operand 29 states and 4636 transitions. [2022-01-19 07:11:54,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 332 transitions, 3298 flow [2022-01-19 07:11:54,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 332 transitions, 3062 flow, removed 21 selfloop flow, removed 26 redundant places. [2022-01-19 07:11:54,570 INFO L242 Difference]: Finished difference. Result has 486 places, 259 transitions, 1781 flow [2022-01-19 07:11:54,571 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2334, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1781, PETRI_PLACES=486, PETRI_TRANSITIONS=259} [2022-01-19 07:11:54,571 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 299 predicate places. [2022-01-19 07:11:54,571 INFO L470 AbstractCegarLoop]: Abstraction has has 486 places, 259 transitions, 1781 flow [2022-01-19 07:11:54,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:54,571 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:54,571 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:54,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2022-01-19 07:11:54,572 INFO L402 AbstractCegarLoop]: === Iteration 300 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:54,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:54,572 INFO L85 PathProgramCache]: Analyzing trace with hash -946555676, now seen corresponding path program 252 times [2022-01-19 07:11:54,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:54,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449661402] [2022-01-19 07:11:54,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:54,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:54,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:54,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:54,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:54,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449661402] [2022-01-19 07:11:54,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449661402] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:54,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:54,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:11:54,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980783041] [2022-01-19 07:11:54,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:54,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:11:54,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:54,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:11:54,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:11:54,673 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:11:54,674 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 259 transitions, 1781 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:54,674 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:54,674 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:11:54,674 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:55,288 INFO L129 PetriNetUnfolder]: 427/1701 cut-off events. [2022-01-19 07:11:55,288 INFO L130 PetriNetUnfolder]: For 6641/6654 co-relation queries the response was YES. [2022-01-19 07:11:55,312 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6149 conditions, 1701 events. 427/1701 cut-off events. For 6641/6654 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 11493 event pairs, 278 based on Foata normal form. 1/1621 useless extension candidates. Maximal degree in co-relation 5966. Up to 744 conditions per place. [2022-01-19 07:11:55,316 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 72 selfloop transitions, 2 changer transitions 66/281 dead transitions. [2022-01-19 07:11:55,316 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 281 transitions, 2189 flow [2022-01-19 07:11:55,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:11:55,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:11:55,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4769 transitions. [2022-01-19 07:11:55,318 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.756984126984127 [2022-01-19 07:11:55,318 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4769 transitions. [2022-01-19 07:11:55,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4769 transitions. [2022-01-19 07:11:55,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:55,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4769 transitions. [2022-01-19 07:11:55,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 158.96666666666667) internal successors, (4769), 30 states have internal predecessors, (4769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:55,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:55,324 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:55,324 INFO L186 Difference]: Start difference. First operand has 486 places, 259 transitions, 1781 flow. Second operand 30 states and 4769 transitions. [2022-01-19 07:11:55,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 281 transitions, 2189 flow [2022-01-19 07:11:55,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 281 transitions, 2032 flow, removed 18 selfloop flow, removed 28 redundant places. [2022-01-19 07:11:55,353 INFO L242 Difference]: Finished difference. Result has 448 places, 204 transitions, 806 flow [2022-01-19 07:11:55,354 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1632, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=806, PETRI_PLACES=448, PETRI_TRANSITIONS=204} [2022-01-19 07:11:55,354 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 261 predicate places. [2022-01-19 07:11:55,354 INFO L470 AbstractCegarLoop]: Abstraction has has 448 places, 204 transitions, 806 flow [2022-01-19 07:11:55,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:55,354 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:55,354 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:55,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2022-01-19 07:11:55,354 INFO L402 AbstractCegarLoop]: === Iteration 301 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:55,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:55,355 INFO L85 PathProgramCache]: Analyzing trace with hash -673647796, now seen corresponding path program 1 times [2022-01-19 07:11:55,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:55,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235603889] [2022-01-19 07:11:55,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:55,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:55,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:55,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:55,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235603889] [2022-01-19 07:11:55,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235603889] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:55,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:55,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:11:55,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513651259] [2022-01-19 07:11:55,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:55,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:11:55,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:55,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:11:55,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:11:55,448 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:11:55,449 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 204 transitions, 806 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:55,449 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:55,449 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:11:55,449 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:56,392 INFO L129 PetriNetUnfolder]: 646/2345 cut-off events. [2022-01-19 07:11:56,393 INFO L130 PetriNetUnfolder]: For 6778/6801 co-relation queries the response was YES. [2022-01-19 07:11:56,420 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7683 conditions, 2345 events. 646/2345 cut-off events. For 6778/6801 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 16870 event pairs, 351 based on Foata normal form. 2/2252 useless extension candidates. Maximal degree in co-relation 7510. Up to 929 conditions per place. [2022-01-19 07:11:56,424 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 148 selfloop transitions, 22 changer transitions 92/404 dead transitions. [2022-01-19 07:11:56,424 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 404 transitions, 2580 flow [2022-01-19 07:11:56,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-19 07:11:56,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-01-19 07:11:56,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 8295 transitions. [2022-01-19 07:11:56,428 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7596153846153846 [2022-01-19 07:11:56,428 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 8295 transitions. [2022-01-19 07:11:56,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 8295 transitions. [2022-01-19 07:11:56,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:56,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 8295 transitions. [2022-01-19 07:11:56,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 159.51923076923077) internal successors, (8295), 52 states have internal predecessors, (8295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:56,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 210.0) internal successors, (11130), 53 states have internal predecessors, (11130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:56,438 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 210.0) internal successors, (11130), 53 states have internal predecessors, (11130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:56,438 INFO L186 Difference]: Start difference. First operand has 448 places, 204 transitions, 806 flow. Second operand 52 states and 8295 transitions. [2022-01-19 07:11:56,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 404 transitions, 2580 flow [2022-01-19 07:11:56,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 404 transitions, 2500 flow, removed 33 selfloop flow, removed 32 redundant places. [2022-01-19 07:11:56,459 INFO L242 Difference]: Finished difference. Result has 434 places, 227 transitions, 1050 flow [2022-01-19 07:11:56,459 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=1050, PETRI_PLACES=434, PETRI_TRANSITIONS=227} [2022-01-19 07:11:56,460 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 247 predicate places. [2022-01-19 07:11:56,460 INFO L470 AbstractCegarLoop]: Abstraction has has 434 places, 227 transitions, 1050 flow [2022-01-19 07:11:56,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:56,460 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:56,460 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:56,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2022-01-19 07:11:56,460 INFO L402 AbstractCegarLoop]: === Iteration 302 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:56,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:56,460 INFO L85 PathProgramCache]: Analyzing trace with hash -289802090, now seen corresponding path program 2 times [2022-01-19 07:11:56,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:56,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984457289] [2022-01-19 07:11:56,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:56,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:56,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:56,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:56,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984457289] [2022-01-19 07:11:56,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984457289] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:56,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:56,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:11:56,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349910046] [2022-01-19 07:11:56,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:56,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:11:56,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:56,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:11:56,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:11:56,537 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:11:56,537 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 227 transitions, 1050 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:56,537 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:56,537 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:11:56,537 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:57,427 INFO L129 PetriNetUnfolder]: 719/2582 cut-off events. [2022-01-19 07:11:57,427 INFO L130 PetriNetUnfolder]: For 26477/26508 co-relation queries the response was YES. [2022-01-19 07:11:57,463 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12263 conditions, 2582 events. 719/2582 cut-off events. For 26477/26508 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 19273 event pairs, 219 based on Foata normal form. 6/2494 useless extension candidates. Maximal degree in co-relation 12073. Up to 555 conditions per place. [2022-01-19 07:11:57,469 INFO L132 encePairwiseOnDemand]: 187/210 looper letters, 146 selfloop transitions, 50 changer transitions 144/482 dead transitions. [2022-01-19 07:11:57,469 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 482 transitions, 4297 flow [2022-01-19 07:11:57,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-19 07:11:57,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-01-19 07:11:57,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5513 transitions. [2022-01-19 07:11:57,472 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7721288515406163 [2022-01-19 07:11:57,472 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5513 transitions. [2022-01-19 07:11:57,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5513 transitions. [2022-01-19 07:11:57,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:57,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5513 transitions. [2022-01-19 07:11:57,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 162.14705882352942) internal successors, (5513), 34 states have internal predecessors, (5513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:57,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:57,479 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:57,479 INFO L186 Difference]: Start difference. First operand has 434 places, 227 transitions, 1050 flow. Second operand 34 states and 5513 transitions. [2022-01-19 07:11:57,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 482 transitions, 4297 flow [2022-01-19 07:11:57,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 482 transitions, 3627 flow, removed 335 selfloop flow, removed 28 redundant places. [2022-01-19 07:11:57,539 INFO L242 Difference]: Finished difference. Result has 427 places, 250 transitions, 1512 flow [2022-01-19 07:11:57,539 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=964, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1512, PETRI_PLACES=427, PETRI_TRANSITIONS=250} [2022-01-19 07:11:57,540 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 240 predicate places. [2022-01-19 07:11:57,540 INFO L470 AbstractCegarLoop]: Abstraction has has 427 places, 250 transitions, 1512 flow [2022-01-19 07:11:57,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:57,540 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:57,540 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:57,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2022-01-19 07:11:57,540 INFO L402 AbstractCegarLoop]: === Iteration 303 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:57,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:57,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1630149412, now seen corresponding path program 1 times [2022-01-19 07:11:57,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:57,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509094565] [2022-01-19 07:11:57,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:57,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:57,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:57,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:57,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:57,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509094565] [2022-01-19 07:11:57,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509094565] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:57,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:57,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 07:11:57,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424110570] [2022-01-19 07:11:57,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:57,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 07:11:57,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:57,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 07:11:57,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 07:11:57,554 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-01-19 07:11:57,554 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 250 transitions, 1512 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:57,554 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:57,554 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-01-19 07:11:57,554 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:57,789 INFO L129 PetriNetUnfolder]: 189/1523 cut-off events. [2022-01-19 07:11:57,790 INFO L130 PetriNetUnfolder]: For 13383/13538 co-relation queries the response was YES. [2022-01-19 07:11:57,812 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6133 conditions, 1523 events. 189/1523 cut-off events. For 13383/13538 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 11331 event pairs, 125 based on Foata normal form. 35/1491 useless extension candidates. Maximal degree in co-relation 5942. Up to 142 conditions per place. [2022-01-19 07:11:57,815 INFO L132 encePairwiseOnDemand]: 204/210 looper letters, 11 selfloop transitions, 3 changer transitions 4/256 dead transitions. [2022-01-19 07:11:57,815 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 256 transitions, 1563 flow [2022-01-19 07:11:57,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 07:11:57,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 07:11:57,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-01-19 07:11:57,816 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-01-19 07:11:57,816 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-01-19 07:11:57,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-01-19 07:11:57,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:57,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-01-19 07:11:57,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:57,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:57,817 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:57,817 INFO L186 Difference]: Start difference. First operand has 427 places, 250 transitions, 1512 flow. Second operand 3 states and 591 transitions. [2022-01-19 07:11:57,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 256 transitions, 1563 flow [2022-01-19 07:11:57,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 256 transitions, 1271 flow, removed 146 selfloop flow, removed 16 redundant places. [2022-01-19 07:11:57,858 INFO L242 Difference]: Finished difference. Result has 388 places, 250 transitions, 1235 flow [2022-01-19 07:11:57,858 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1220, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1235, PETRI_PLACES=388, PETRI_TRANSITIONS=250} [2022-01-19 07:11:57,858 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 201 predicate places. [2022-01-19 07:11:57,858 INFO L470 AbstractCegarLoop]: Abstraction has has 388 places, 250 transitions, 1235 flow [2022-01-19 07:11:57,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:57,858 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:57,858 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:57,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302 [2022-01-19 07:11:57,859 INFO L402 AbstractCegarLoop]: === Iteration 304 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:57,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:57,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1287662250, now seen corresponding path program 2 times [2022-01-19 07:11:57,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:57,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593772266] [2022-01-19 07:11:57,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:57,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:57,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:57,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:57,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593772266] [2022-01-19 07:11:57,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593772266] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:57,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:57,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 07:11:57,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747955500] [2022-01-19 07:11:57,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:57,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 07:11:57,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:57,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 07:11:57,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 07:11:57,871 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-01-19 07:11:57,872 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 250 transitions, 1235 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:57,872 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:57,872 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-01-19 07:11:57,872 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:58,033 INFO L129 PetriNetUnfolder]: 86/947 cut-off events. [2022-01-19 07:11:58,033 INFO L130 PetriNetUnfolder]: For 4769/4795 co-relation queries the response was YES. [2022-01-19 07:11:58,040 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3251 conditions, 947 events. 86/947 cut-off events. For 4769/4795 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 6012 event pairs, 70 based on Foata normal form. 8/915 useless extension candidates. Maximal degree in co-relation 3074. Up to 72 conditions per place. [2022-01-19 07:11:58,042 INFO L132 encePairwiseOnDemand]: 202/210 looper letters, 9 selfloop transitions, 5 changer transitions 23/219 dead transitions. [2022-01-19 07:11:58,042 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 219 transitions, 1003 flow [2022-01-19 07:11:58,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 07:11:58,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 07:11:58,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 590 transitions. [2022-01-19 07:11:58,043 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9365079365079365 [2022-01-19 07:11:58,043 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 590 transitions. [2022-01-19 07:11:58,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 590 transitions. [2022-01-19 07:11:58,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:58,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 590 transitions. [2022-01-19 07:11:58,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:58,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:58,044 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:58,044 INFO L186 Difference]: Start difference. First operand has 388 places, 250 transitions, 1235 flow. Second operand 3 states and 590 transitions. [2022-01-19 07:11:58,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 219 transitions, 1003 flow [2022-01-19 07:11:58,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 219 transitions, 880 flow, removed 35 selfloop flow, removed 23 redundant places. [2022-01-19 07:11:58,062 INFO L242 Difference]: Finished difference. Result has 365 places, 195 transitions, 747 flow [2022-01-19 07:11:58,062 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=828, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=747, PETRI_PLACES=365, PETRI_TRANSITIONS=195} [2022-01-19 07:11:58,062 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 178 predicate places. [2022-01-19 07:11:58,062 INFO L470 AbstractCegarLoop]: Abstraction has has 365 places, 195 transitions, 747 flow [2022-01-19 07:11:58,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:58,063 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:58,063 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:58,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2022-01-19 07:11:58,063 INFO L402 AbstractCegarLoop]: === Iteration 305 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:58,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:58,063 INFO L85 PathProgramCache]: Analyzing trace with hash 11624958, now seen corresponding path program 1 times [2022-01-19 07:11:58,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:58,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998528767] [2022-01-19 07:11:58,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:58,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:58,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:58,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:58,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:58,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998528767] [2022-01-19 07:11:58,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998528767] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:58,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:58,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:11:58,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41720517] [2022-01-19 07:11:58,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:58,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:11:58,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:58,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:11:58,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:11:58,158 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:11:58,159 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 195 transitions, 747 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:58,159 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:58,159 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:11:58,159 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:11:58,826 INFO L129 PetriNetUnfolder]: 284/1339 cut-off events. [2022-01-19 07:11:58,826 INFO L130 PetriNetUnfolder]: For 8667/8681 co-relation queries the response was YES. [2022-01-19 07:11:58,841 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5421 conditions, 1339 events. 284/1339 cut-off events. For 8667/8681 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 8605 event pairs, 120 based on Foata normal form. 1/1295 useless extension candidates. Maximal degree in co-relation 5259. Up to 374 conditions per place. [2022-01-19 07:11:58,844 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 112 selfloop transitions, 25 changer transitions 60/338 dead transitions. [2022-01-19 07:11:58,844 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 338 transitions, 2697 flow [2022-01-19 07:11:58,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-19 07:11:58,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-01-19 07:11:58,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5448 transitions. [2022-01-19 07:11:58,847 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7630252100840336 [2022-01-19 07:11:58,847 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5448 transitions. [2022-01-19 07:11:58,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5448 transitions. [2022-01-19 07:11:58,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:11:58,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5448 transitions. [2022-01-19 07:11:58,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 160.23529411764707) internal successors, (5448), 34 states have internal predecessors, (5448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:58,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:58,854 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:58,854 INFO L186 Difference]: Start difference. First operand has 365 places, 195 transitions, 747 flow. Second operand 34 states and 5448 transitions. [2022-01-19 07:11:58,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 338 transitions, 2697 flow [2022-01-19 07:11:58,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 338 transitions, 2505 flow, removed 91 selfloop flow, removed 12 redundant places. [2022-01-19 07:11:58,872 INFO L242 Difference]: Finished difference. Result has 402 places, 219 transitions, 1186 flow [2022-01-19 07:11:58,872 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1186, PETRI_PLACES=402, PETRI_TRANSITIONS=219} [2022-01-19 07:11:58,872 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 215 predicate places. [2022-01-19 07:11:58,872 INFO L470 AbstractCegarLoop]: Abstraction has has 402 places, 219 transitions, 1186 flow [2022-01-19 07:11:58,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:58,872 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:11:58,872 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:11:58,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2022-01-19 07:11:58,873 INFO L402 AbstractCegarLoop]: === Iteration 306 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:11:58,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:11:58,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1065449616, now seen corresponding path program 2 times [2022-01-19 07:11:58,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:11:58,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186074148] [2022-01-19 07:11:58,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:11:58,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:11:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:11:58,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:11:58,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:11:58,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186074148] [2022-01-19 07:11:58,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186074148] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:11:58,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:11:58,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:11:58,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264009682] [2022-01-19 07:11:58,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:11:58,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:11:58,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:11:58,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:11:58,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:11:58,974 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:11:58,975 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 219 transitions, 1186 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:11:58,975 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:11:58,975 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:11:58,975 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:00,030 INFO L129 PetriNetUnfolder]: 293/1409 cut-off events. [2022-01-19 07:12:00,030 INFO L130 PetriNetUnfolder]: For 17088/17096 co-relation queries the response was YES. [2022-01-19 07:12:00,048 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6956 conditions, 1409 events. 293/1409 cut-off events. For 17088/17096 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 9356 event pairs, 103 based on Foata normal form. 1/1372 useless extension candidates. Maximal degree in co-relation 6773. Up to 354 conditions per place. [2022-01-19 07:12:00,052 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 160 selfloop transitions, 20 changer transitions 103/424 dead transitions. [2022-01-19 07:12:00,052 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 424 transitions, 4547 flow [2022-01-19 07:12:00,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-19 07:12:00,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-01-19 07:12:00,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 9234 transitions. [2022-01-19 07:12:00,057 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.758128078817734 [2022-01-19 07:12:00,057 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 9234 transitions. [2022-01-19 07:12:00,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 9234 transitions. [2022-01-19 07:12:00,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:00,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 9234 transitions. [2022-01-19 07:12:00,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 159.20689655172413) internal successors, (9234), 58 states have internal predecessors, (9234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:00,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:00,069 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:00,069 INFO L186 Difference]: Start difference. First operand has 402 places, 219 transitions, 1186 flow. Second operand 58 states and 9234 transitions. [2022-01-19 07:12:00,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 424 transitions, 4547 flow [2022-01-19 07:12:00,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 424 transitions, 3783 flow, removed 382 selfloop flow, removed 18 redundant places. [2022-01-19 07:12:00,106 INFO L242 Difference]: Finished difference. Result has 476 places, 227 transitions, 1339 flow [2022-01-19 07:12:00,107 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=1339, PETRI_PLACES=476, PETRI_TRANSITIONS=227} [2022-01-19 07:12:00,107 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 289 predicate places. [2022-01-19 07:12:00,107 INFO L470 AbstractCegarLoop]: Abstraction has has 476 places, 227 transitions, 1339 flow [2022-01-19 07:12:00,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:00,107 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:00,107 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:00,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305 [2022-01-19 07:12:00,107 INFO L402 AbstractCegarLoop]: === Iteration 307 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:00,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:00,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1337927380, now seen corresponding path program 3 times [2022-01-19 07:12:00,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:00,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128240896] [2022-01-19 07:12:00,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:00,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:00,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:00,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:00,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:00,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128240896] [2022-01-19 07:12:00,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128240896] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:00,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:00,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:00,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664130051] [2022-01-19 07:12:00,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:00,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:00,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:00,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:00,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:00,209 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:00,209 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 227 transitions, 1339 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:00,209 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:00,209 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:00,209 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:00,938 INFO L129 PetriNetUnfolder]: 339/1539 cut-off events. [2022-01-19 07:12:00,938 INFO L130 PetriNetUnfolder]: For 30491/30499 co-relation queries the response was YES. [2022-01-19 07:12:00,963 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9179 conditions, 1539 events. 339/1539 cut-off events. For 30491/30499 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 10268 event pairs, 139 based on Foata normal form. 1/1492 useless extension candidates. Maximal degree in co-relation 8958. Up to 373 conditions per place. [2022-01-19 07:12:00,967 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 137 selfloop transitions, 31 changer transitions 49/358 dead transitions. [2022-01-19 07:12:00,967 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 358 transitions, 3891 flow [2022-01-19 07:12:00,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 07:12:00,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 07:12:00,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4353 transitions. [2022-01-19 07:12:00,969 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7677248677248677 [2022-01-19 07:12:00,969 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4353 transitions. [2022-01-19 07:12:00,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4353 transitions. [2022-01-19 07:12:00,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:00,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4353 transitions. [2022-01-19 07:12:00,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 161.22222222222223) internal successors, (4353), 27 states have internal predecessors, (4353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:00,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:00,975 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:00,975 INFO L186 Difference]: Start difference. First operand has 476 places, 227 transitions, 1339 flow. Second operand 27 states and 4353 transitions. [2022-01-19 07:12:00,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 358 transitions, 3891 flow [2022-01-19 07:12:01,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 358 transitions, 3384 flow, removed 246 selfloop flow, removed 35 redundant places. [2022-01-19 07:12:01,057 INFO L242 Difference]: Finished difference. Result has 439 places, 256 transitions, 1852 flow [2022-01-19 07:12:01,057 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1195, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1852, PETRI_PLACES=439, PETRI_TRANSITIONS=256} [2022-01-19 07:12:01,057 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 252 predicate places. [2022-01-19 07:12:01,057 INFO L470 AbstractCegarLoop]: Abstraction has has 439 places, 256 transitions, 1852 flow [2022-01-19 07:12:01,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:01,058 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:01,058 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:01,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2022-01-19 07:12:01,058 INFO L402 AbstractCegarLoop]: === Iteration 308 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:01,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:01,058 INFO L85 PathProgramCache]: Analyzing trace with hash -375527788, now seen corresponding path program 4 times [2022-01-19 07:12:01,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:01,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333858650] [2022-01-19 07:12:01,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:01,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:01,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:01,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:01,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333858650] [2022-01-19 07:12:01,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333858650] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:01,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:01,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:01,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47115717] [2022-01-19 07:12:01,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:01,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:01,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:01,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:01,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:01,153 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:01,154 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 256 transitions, 1852 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:01,154 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:01,154 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:01,154 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:01,799 INFO L129 PetriNetUnfolder]: 350/1567 cut-off events. [2022-01-19 07:12:01,799 INFO L130 PetriNetUnfolder]: For 20771/20786 co-relation queries the response was YES. [2022-01-19 07:12:01,821 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8577 conditions, 1567 events. 350/1567 cut-off events. For 20771/20786 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 10472 event pairs, 125 based on Foata normal form. 3/1524 useless extension candidates. Maximal degree in co-relation 8370. Up to 435 conditions per place. [2022-01-19 07:12:01,825 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 151 selfloop transitions, 47 changer transitions 45/384 dead transitions. [2022-01-19 07:12:01,825 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 384 transitions, 4473 flow [2022-01-19 07:12:01,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-19 07:12:01,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-01-19 07:12:01,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4180 transitions. [2022-01-19 07:12:01,827 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655677655677655 [2022-01-19 07:12:01,827 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4180 transitions. [2022-01-19 07:12:01,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4180 transitions. [2022-01-19 07:12:01,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:01,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4180 transitions. [2022-01-19 07:12:01,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 160.76923076923077) internal successors, (4180), 26 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:01,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:01,832 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:01,832 INFO L186 Difference]: Start difference. First operand has 439 places, 256 transitions, 1852 flow. Second operand 26 states and 4180 transitions. [2022-01-19 07:12:01,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 384 transitions, 4473 flow [2022-01-19 07:12:01,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 384 transitions, 3911 flow, removed 260 selfloop flow, removed 24 redundant places. [2022-01-19 07:12:01,896 INFO L242 Difference]: Finished difference. Result has 445 places, 274 transitions, 2045 flow [2022-01-19 07:12:01,897 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2045, PETRI_PLACES=445, PETRI_TRANSITIONS=274} [2022-01-19 07:12:01,897 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 258 predicate places. [2022-01-19 07:12:01,897 INFO L470 AbstractCegarLoop]: Abstraction has has 445 places, 274 transitions, 2045 flow [2022-01-19 07:12:01,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:01,897 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:01,897 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:01,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2022-01-19 07:12:01,897 INFO L402 AbstractCegarLoop]: === Iteration 309 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:01,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:01,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1356977192, now seen corresponding path program 5 times [2022-01-19 07:12:01,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:01,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540377581] [2022-01-19 07:12:01,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:01,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:01,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:02,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:02,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:02,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540377581] [2022-01-19 07:12:02,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540377581] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:02,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:02,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:02,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595598949] [2022-01-19 07:12:02,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:02,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:02,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:02,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:02,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:02,009 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:02,010 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 274 transitions, 2045 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:02,010 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:02,010 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:02,010 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:03,294 INFO L129 PetriNetUnfolder]: 479/1886 cut-off events. [2022-01-19 07:12:03,294 INFO L130 PetriNetUnfolder]: For 28147/28160 co-relation queries the response was YES. [2022-01-19 07:12:03,327 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11237 conditions, 1886 events. 479/1886 cut-off events. For 28147/28160 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 13247 event pairs, 177 based on Foata normal form. 3/1840 useless extension candidates. Maximal degree in co-relation 11035. Up to 437 conditions per place. [2022-01-19 07:12:03,333 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 199 selfloop transitions, 38 changer transitions 88/466 dead transitions. [2022-01-19 07:12:03,333 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 466 transitions, 6002 flow [2022-01-19 07:12:03,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-19 07:12:03,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-01-19 07:12:03,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 8287 transitions. [2022-01-19 07:12:03,336 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7588827838827839 [2022-01-19 07:12:03,336 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 8287 transitions. [2022-01-19 07:12:03,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 8287 transitions. [2022-01-19 07:12:03,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:03,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 8287 transitions. [2022-01-19 07:12:03,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 159.3653846153846) internal successors, (8287), 52 states have internal predecessors, (8287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:03,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 210.0) internal successors, (11130), 53 states have internal predecessors, (11130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:03,347 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 210.0) internal successors, (11130), 53 states have internal predecessors, (11130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:03,347 INFO L186 Difference]: Start difference. First operand has 445 places, 274 transitions, 2045 flow. Second operand 52 states and 8287 transitions. [2022-01-19 07:12:03,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 466 transitions, 6002 flow [2022-01-19 07:12:03,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 466 transitions, 5495 flow, removed 185 selfloop flow, removed 12 redundant places. [2022-01-19 07:12:03,438 INFO L242 Difference]: Finished difference. Result has 517 places, 295 transitions, 2258 flow [2022-01-19 07:12:03,438 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1742, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=2258, PETRI_PLACES=517, PETRI_TRANSITIONS=295} [2022-01-19 07:12:03,439 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 330 predicate places. [2022-01-19 07:12:03,439 INFO L470 AbstractCegarLoop]: Abstraction has has 517 places, 295 transitions, 2258 flow [2022-01-19 07:12:03,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:03,439 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:03,439 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:03,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308 [2022-01-19 07:12:03,439 INFO L402 AbstractCegarLoop]: === Iteration 310 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:03,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:03,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1219439260, now seen corresponding path program 6 times [2022-01-19 07:12:03,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:03,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737607230] [2022-01-19 07:12:03,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:03,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:03,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:03,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:03,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:03,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737607230] [2022-01-19 07:12:03,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737607230] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:03,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:03,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:03,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518071050] [2022-01-19 07:12:03,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:03,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:03,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:03,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:03,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:03,538 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:03,539 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 295 transitions, 2258 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:03,539 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:03,539 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:03,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:04,671 INFO L129 PetriNetUnfolder]: 555/2112 cut-off events. [2022-01-19 07:12:04,671 INFO L130 PetriNetUnfolder]: For 57614/57640 co-relation queries the response was YES. [2022-01-19 07:12:04,704 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15197 conditions, 2112 events. 555/2112 cut-off events. For 57614/57640 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 15241 event pairs, 254 based on Foata normal form. 3/2056 useless extension candidates. Maximal degree in co-relation 14959. Up to 432 conditions per place. [2022-01-19 07:12:04,711 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 229 selfloop transitions, 57 changer transitions 89/516 dead transitions. [2022-01-19 07:12:04,712 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 516 transitions, 7952 flow [2022-01-19 07:12:04,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-19 07:12:04,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-01-19 07:12:04,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 7972 transitions. [2022-01-19 07:12:04,715 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7592380952380953 [2022-01-19 07:12:04,715 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 7972 transitions. [2022-01-19 07:12:04,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 7972 transitions. [2022-01-19 07:12:04,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:04,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 7972 transitions. [2022-01-19 07:12:04,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 159.44) internal successors, (7972), 50 states have internal predecessors, (7972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:04,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:04,725 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:04,725 INFO L186 Difference]: Start difference. First operand has 517 places, 295 transitions, 2258 flow. Second operand 50 states and 7972 transitions. [2022-01-19 07:12:04,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 516 transitions, 7952 flow [2022-01-19 07:12:04,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 516 transitions, 6704 flow, removed 624 selfloop flow, removed 35 redundant places. [2022-01-19 07:12:04,855 INFO L242 Difference]: Finished difference. Result has 538 places, 315 transitions, 2761 flow [2022-01-19 07:12:04,855 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2124, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=2761, PETRI_PLACES=538, PETRI_TRANSITIONS=315} [2022-01-19 07:12:04,855 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 351 predicate places. [2022-01-19 07:12:04,855 INFO L470 AbstractCegarLoop]: Abstraction has has 538 places, 315 transitions, 2761 flow [2022-01-19 07:12:04,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:04,856 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:04,856 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:04,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309 [2022-01-19 07:12:04,856 INFO L402 AbstractCegarLoop]: === Iteration 311 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:04,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:04,856 INFO L85 PathProgramCache]: Analyzing trace with hash 580278906, now seen corresponding path program 7 times [2022-01-19 07:12:04,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:04,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770898491] [2022-01-19 07:12:04,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:04,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:04,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:04,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:04,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:04,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770898491] [2022-01-19 07:12:04,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770898491] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:04,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:04,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:04,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075873668] [2022-01-19 07:12:04,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:04,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:04,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:04,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:04,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:04,953 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:04,954 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 315 transitions, 2761 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:04,954 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:04,954 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:04,954 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:06,230 INFO L129 PetriNetUnfolder]: 553/2071 cut-off events. [2022-01-19 07:12:06,230 INFO L130 PetriNetUnfolder]: For 59596/59628 co-relation queries the response was YES. [2022-01-19 07:12:06,273 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15469 conditions, 2071 events. 553/2071 cut-off events. For 59596/59628 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 15102 event pairs, 127 based on Foata normal form. 1/2027 useless extension candidates. Maximal degree in co-relation 15218. Up to 335 conditions per place. [2022-01-19 07:12:06,280 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 324 selfloop transitions, 62 changer transitions 114/641 dead transitions. [2022-01-19 07:12:06,280 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 641 transitions, 10230 flow [2022-01-19 07:12:06,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-19 07:12:06,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-01-19 07:12:06,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 9230 transitions. [2022-01-19 07:12:06,283 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7577996715927751 [2022-01-19 07:12:06,284 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 9230 transitions. [2022-01-19 07:12:06,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 9230 transitions. [2022-01-19 07:12:06,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:06,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 9230 transitions. [2022-01-19 07:12:06,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 159.13793103448276) internal successors, (9230), 58 states have internal predecessors, (9230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:06,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:06,296 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:06,296 INFO L186 Difference]: Start difference. First operand has 538 places, 315 transitions, 2761 flow. Second operand 58 states and 9230 transitions. [2022-01-19 07:12:06,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 641 transitions, 10230 flow [2022-01-19 07:12:06,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 641 transitions, 9319 flow, removed 439 selfloop flow, removed 33 redundant places. [2022-01-19 07:12:06,484 INFO L242 Difference]: Finished difference. Result has 574 places, 318 transitions, 2959 flow [2022-01-19 07:12:06,485 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2573, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=2959, PETRI_PLACES=574, PETRI_TRANSITIONS=318} [2022-01-19 07:12:06,485 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 387 predicate places. [2022-01-19 07:12:06,485 INFO L470 AbstractCegarLoop]: Abstraction has has 574 places, 318 transitions, 2959 flow [2022-01-19 07:12:06,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:06,485 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:06,485 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:06,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2022-01-19 07:12:06,485 INFO L402 AbstractCegarLoop]: === Iteration 312 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:06,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:06,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1446185702, now seen corresponding path program 8 times [2022-01-19 07:12:06,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:06,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564944088] [2022-01-19 07:12:06,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:06,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:06,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:06,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:06,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564944088] [2022-01-19 07:12:06,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564944088] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:06,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:06,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:06,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905972054] [2022-01-19 07:12:06,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:06,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:06,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:06,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:06,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:06,580 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:06,581 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 318 transitions, 2959 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:06,581 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:06,581 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:06,581 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:07,818 INFO L129 PetriNetUnfolder]: 588/2196 cut-off events. [2022-01-19 07:12:07,818 INFO L130 PetriNetUnfolder]: For 52660/52702 co-relation queries the response was YES. [2022-01-19 07:12:07,859 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15944 conditions, 2196 events. 588/2196 cut-off events. For 52660/52702 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 16339 event pairs, 165 based on Foata normal form. 15/2146 useless extension candidates. Maximal degree in co-relation 15675. Up to 504 conditions per place. [2022-01-19 07:12:07,866 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 207 selfloop transitions, 65 changer transitions 89/502 dead transitions. [2022-01-19 07:12:07,867 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 502 transitions, 7362 flow [2022-01-19 07:12:07,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-19 07:12:07,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-01-19 07:12:07,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 8589 transitions. [2022-01-19 07:12:07,870 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7574074074074074 [2022-01-19 07:12:07,870 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 8589 transitions. [2022-01-19 07:12:07,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 8589 transitions. [2022-01-19 07:12:07,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:07,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 8589 transitions. [2022-01-19 07:12:07,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 159.05555555555554) internal successors, (8589), 54 states have internal predecessors, (8589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:07,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 210.0) internal successors, (11550), 55 states have internal predecessors, (11550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:07,881 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 210.0) internal successors, (11550), 55 states have internal predecessors, (11550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:07,881 INFO L186 Difference]: Start difference. First operand has 574 places, 318 transitions, 2959 flow. Second operand 54 states and 8589 transitions. [2022-01-19 07:12:07,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 502 transitions, 7362 flow [2022-01-19 07:12:08,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 502 transitions, 7031 flow, removed 124 selfloop flow, removed 45 redundant places. [2022-01-19 07:12:08,065 INFO L242 Difference]: Finished difference. Result has 578 places, 326 transitions, 3220 flow [2022-01-19 07:12:08,065 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2818, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=3220, PETRI_PLACES=578, PETRI_TRANSITIONS=326} [2022-01-19 07:12:08,065 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 391 predicate places. [2022-01-19 07:12:08,065 INFO L470 AbstractCegarLoop]: Abstraction has has 578 places, 326 transitions, 3220 flow [2022-01-19 07:12:08,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:08,066 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:08,066 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:08,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2022-01-19 07:12:08,066 INFO L402 AbstractCegarLoop]: === Iteration 313 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:08,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:08,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1568026750, now seen corresponding path program 9 times [2022-01-19 07:12:08,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:08,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530882535] [2022-01-19 07:12:08,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:08,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:08,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:08,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:08,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530882535] [2022-01-19 07:12:08,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530882535] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:08,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:08,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:08,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368117384] [2022-01-19 07:12:08,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:08,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:08,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:08,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:08,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:08,169 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:08,170 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 578 places, 326 transitions, 3220 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:08,170 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:08,170 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:08,170 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:09,451 INFO L129 PetriNetUnfolder]: 600/2248 cut-off events. [2022-01-19 07:12:09,452 INFO L130 PetriNetUnfolder]: For 68600/68633 co-relation queries the response was YES. [2022-01-19 07:12:09,483 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17684 conditions, 2248 events. 600/2248 cut-off events. For 68600/68633 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 16723 event pairs, 325 based on Foata normal form. 1/2174 useless extension candidates. Maximal degree in co-relation 17415. Up to 535 conditions per place. [2022-01-19 07:12:09,490 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 225 selfloop transitions, 51 changer transitions 89/506 dead transitions. [2022-01-19 07:12:09,490 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 506 transitions, 8643 flow [2022-01-19 07:12:09,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-19 07:12:09,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-01-19 07:12:09,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 8133 transitions. [2022-01-19 07:12:09,494 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7593837535014005 [2022-01-19 07:12:09,494 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 8133 transitions. [2022-01-19 07:12:09,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 8133 transitions. [2022-01-19 07:12:09,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:09,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 8133 transitions. [2022-01-19 07:12:09,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 159.47058823529412) internal successors, (8133), 51 states have internal predecessors, (8133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:09,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 210.0) internal successors, (10920), 52 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:09,505 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 210.0) internal successors, (10920), 52 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:09,505 INFO L186 Difference]: Start difference. First operand has 578 places, 326 transitions, 3220 flow. Second operand 51 states and 8133 transitions. [2022-01-19 07:12:09,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 506 transitions, 8643 flow [2022-01-19 07:12:09,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 506 transitions, 7701 flow, removed 445 selfloop flow, removed 39 redundant places. [2022-01-19 07:12:09,708 INFO L242 Difference]: Finished difference. Result has 594 places, 344 transitions, 3761 flow [2022-01-19 07:12:09,709 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3088, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=3761, PETRI_PLACES=594, PETRI_TRANSITIONS=344} [2022-01-19 07:12:09,709 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 407 predicate places. [2022-01-19 07:12:09,709 INFO L470 AbstractCegarLoop]: Abstraction has has 594 places, 344 transitions, 3761 flow [2022-01-19 07:12:09,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:09,709 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:09,709 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:09,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2022-01-19 07:12:09,709 INFO L402 AbstractCegarLoop]: === Iteration 314 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:09,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:09,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1112861422, now seen corresponding path program 10 times [2022-01-19 07:12:09,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:09,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010503117] [2022-01-19 07:12:09,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:09,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:09,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:09,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:09,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010503117] [2022-01-19 07:12:09,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010503117] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:09,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:09,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:09,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425456831] [2022-01-19 07:12:09,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:09,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:09,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:09,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:09,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:09,805 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:09,806 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 344 transitions, 3761 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:09,806 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:09,806 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:09,806 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:11,029 INFO L129 PetriNetUnfolder]: 591/2229 cut-off events. [2022-01-19 07:12:11,029 INFO L130 PetriNetUnfolder]: For 78850/78883 co-relation queries the response was YES. [2022-01-19 07:12:11,074 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18401 conditions, 2229 events. 591/2229 cut-off events. For 78850/78883 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 16740 event pairs, 245 based on Foata normal form. 1/2151 useless extension candidates. Maximal degree in co-relation 18122. Up to 567 conditions per place. [2022-01-19 07:12:11,081 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 298 selfloop transitions, 79 changer transitions 93/611 dead transitions. [2022-01-19 07:12:11,081 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 611 transitions, 11743 flow [2022-01-19 07:12:11,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-19 07:12:11,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-01-19 07:12:11,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 7963 transitions. [2022-01-19 07:12:11,085 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7583809523809524 [2022-01-19 07:12:11,085 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 7963 transitions. [2022-01-19 07:12:11,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 7963 transitions. [2022-01-19 07:12:11,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:11,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 7963 transitions. [2022-01-19 07:12:11,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 159.26) internal successors, (7963), 50 states have internal predecessors, (7963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:11,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:11,095 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:11,095 INFO L186 Difference]: Start difference. First operand has 594 places, 344 transitions, 3761 flow. Second operand 50 states and 7963 transitions. [2022-01-19 07:12:11,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 611 transitions, 11743 flow [2022-01-19 07:12:11,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 611 transitions, 10512 flow, removed 596 selfloop flow, removed 38 redundant places. [2022-01-19 07:12:11,358 INFO L242 Difference]: Finished difference. Result has 611 places, 374 transitions, 4668 flow [2022-01-19 07:12:11,358 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3560, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=4668, PETRI_PLACES=611, PETRI_TRANSITIONS=374} [2022-01-19 07:12:11,358 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 424 predicate places. [2022-01-19 07:12:11,358 INFO L470 AbstractCegarLoop]: Abstraction has has 611 places, 374 transitions, 4668 flow [2022-01-19 07:12:11,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:11,359 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:11,359 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:11,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313 [2022-01-19 07:12:11,359 INFO L402 AbstractCegarLoop]: === Iteration 315 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:11,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:11,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1032397360, now seen corresponding path program 11 times [2022-01-19 07:12:11,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:11,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927908442] [2022-01-19 07:12:11,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:11,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:11,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:11,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:11,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:11,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927908442] [2022-01-19 07:12:11,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927908442] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:11,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:11,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:11,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469382183] [2022-01-19 07:12:11,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:11,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:11,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:11,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:11,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:11,457 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:11,458 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 374 transitions, 4668 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:11,458 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:11,458 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:11,458 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:12,719 INFO L129 PetriNetUnfolder]: 584/2220 cut-off events. [2022-01-19 07:12:12,719 INFO L130 PetriNetUnfolder]: For 70110/70165 co-relation queries the response was YES. [2022-01-19 07:12:12,773 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17642 conditions, 2220 events. 584/2220 cut-off events. For 70110/70165 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 16679 event pairs, 169 based on Foata normal form. 19/2169 useless extension candidates. Maximal degree in co-relation 17355. Up to 539 conditions per place. [2022-01-19 07:12:12,781 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 238 selfloop transitions, 97 changer transitions 81/557 dead transitions. [2022-01-19 07:12:12,781 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 618 places, 557 transitions, 9909 flow [2022-01-19 07:12:12,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 07:12:12,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 07:12:12,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7328 transitions. [2022-01-19 07:12:12,784 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.758592132505176 [2022-01-19 07:12:12,784 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7328 transitions. [2022-01-19 07:12:12,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7328 transitions. [2022-01-19 07:12:12,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:12,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7328 transitions. [2022-01-19 07:12:12,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.30434782608697) internal successors, (7328), 46 states have internal predecessors, (7328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:12,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:12,793 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:12,794 INFO L186 Difference]: Start difference. First operand has 611 places, 374 transitions, 4668 flow. Second operand 46 states and 7328 transitions. [2022-01-19 07:12:12,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 618 places, 557 transitions, 9909 flow [2022-01-19 07:12:13,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 557 transitions, 8847 flow, removed 481 selfloop flow, removed 39 redundant places. [2022-01-19 07:12:13,080 INFO L242 Difference]: Finished difference. Result has 611 places, 378 transitions, 4604 flow [2022-01-19 07:12:13,080 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4185, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=4604, PETRI_PLACES=611, PETRI_TRANSITIONS=378} [2022-01-19 07:12:13,080 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 424 predicate places. [2022-01-19 07:12:13,080 INFO L470 AbstractCegarLoop]: Abstraction has has 611 places, 378 transitions, 4604 flow [2022-01-19 07:12:13,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:13,081 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:13,081 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:13,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314 [2022-01-19 07:12:13,081 INFO L402 AbstractCegarLoop]: === Iteration 316 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:13,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:13,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1861600500, now seen corresponding path program 12 times [2022-01-19 07:12:13,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:13,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261424433] [2022-01-19 07:12:13,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:13,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:13,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:13,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:13,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:13,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261424433] [2022-01-19 07:12:13,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261424433] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:13,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:13,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:13,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368748007] [2022-01-19 07:12:13,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:13,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:13,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:13,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:13,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:13,181 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:13,182 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 378 transitions, 4604 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:13,182 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:13,182 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:13,182 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:14,455 INFO L129 PetriNetUnfolder]: 583/2207 cut-off events. [2022-01-19 07:12:14,455 INFO L130 PetriNetUnfolder]: For 64420/64473 co-relation queries the response was YES. [2022-01-19 07:12:14,507 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17349 conditions, 2207 events. 583/2207 cut-off events. For 64420/64473 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 16533 event pairs, 176 based on Foata normal form. 16/2150 useless extension candidates. Maximal degree in co-relation 17067. Up to 524 conditions per place. [2022-01-19 07:12:14,514 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 263 selfloop transitions, 84 changer transitions 92/580 dead transitions. [2022-01-19 07:12:14,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 580 transitions, 10695 flow [2022-01-19 07:12:14,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-19 07:12:14,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-01-19 07:12:14,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 8441 transitions. [2022-01-19 07:12:14,518 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7584007187780772 [2022-01-19 07:12:14,518 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 8441 transitions. [2022-01-19 07:12:14,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 8441 transitions. [2022-01-19 07:12:14,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:14,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 8441 transitions. [2022-01-19 07:12:14,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 159.26415094339623) internal successors, (8441), 53 states have internal predecessors, (8441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:14,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 210.0) internal successors, (11340), 54 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:14,528 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 210.0) internal successors, (11340), 54 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:14,528 INFO L186 Difference]: Start difference. First operand has 611 places, 378 transitions, 4604 flow. Second operand 53 states and 8441 transitions. [2022-01-19 07:12:14,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 580 transitions, 10695 flow [2022-01-19 07:12:14,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 580 transitions, 9956 flow, removed 323 selfloop flow, removed 35 redundant places. [2022-01-19 07:12:14,774 INFO L242 Difference]: Finished difference. Result has 638 places, 388 transitions, 5010 flow [2022-01-19 07:12:14,774 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4393, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=5010, PETRI_PLACES=638, PETRI_TRANSITIONS=388} [2022-01-19 07:12:14,775 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 451 predicate places. [2022-01-19 07:12:14,775 INFO L470 AbstractCegarLoop]: Abstraction has has 638 places, 388 transitions, 5010 flow [2022-01-19 07:12:14,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:14,775 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:14,775 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:14,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315 [2022-01-19 07:12:14,775 INFO L402 AbstractCegarLoop]: === Iteration 317 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:14,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:14,775 INFO L85 PathProgramCache]: Analyzing trace with hash 50987626, now seen corresponding path program 13 times [2022-01-19 07:12:14,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:14,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56971697] [2022-01-19 07:12:14,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:14,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:14,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:14,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:14,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:14,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56971697] [2022-01-19 07:12:14,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56971697] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:14,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:14,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:14,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538578218] [2022-01-19 07:12:14,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:14,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:14,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:14,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:14,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:14,871 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:14,872 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 638 places, 388 transitions, 5010 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:14,872 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:14,872 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:14,872 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:15,940 INFO L129 PetriNetUnfolder]: 558/2120 cut-off events. [2022-01-19 07:12:15,941 INFO L130 PetriNetUnfolder]: For 67466/67526 co-relation queries the response was YES. [2022-01-19 07:12:15,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17249 conditions, 2120 events. 558/2120 cut-off events. For 67466/67526 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 15555 event pairs, 183 based on Foata normal form. 15/2056 useless extension candidates. Maximal degree in co-relation 16954. Up to 543 conditions per place. [2022-01-19 07:12:15,993 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 233 selfloop transitions, 103 changer transitions 66/543 dead transitions. [2022-01-19 07:12:15,993 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 543 transitions, 10111 flow [2022-01-19 07:12:15,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-19 07:12:15,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-01-19 07:12:15,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5441 transitions. [2022-01-19 07:12:15,996 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7620448179271708 [2022-01-19 07:12:15,996 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5441 transitions. [2022-01-19 07:12:15,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5441 transitions. [2022-01-19 07:12:15,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:15,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5441 transitions. [2022-01-19 07:12:15,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 160.02941176470588) internal successors, (5441), 34 states have internal predecessors, (5441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:16,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:16,003 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:16,003 INFO L186 Difference]: Start difference. First operand has 638 places, 388 transitions, 5010 flow. Second operand 34 states and 5441 transitions. [2022-01-19 07:12:16,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 543 transitions, 10111 flow [2022-01-19 07:12:16,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 590 places, 543 transitions, 9164 flow, removed 413 selfloop flow, removed 40 redundant places. [2022-01-19 07:12:16,304 INFO L242 Difference]: Finished difference. Result has 615 places, 406 transitions, 5557 flow [2022-01-19 07:12:16,305 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4710, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=5557, PETRI_PLACES=615, PETRI_TRANSITIONS=406} [2022-01-19 07:12:16,305 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 428 predicate places. [2022-01-19 07:12:16,305 INFO L470 AbstractCegarLoop]: Abstraction has has 615 places, 406 transitions, 5557 flow [2022-01-19 07:12:16,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:16,305 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:16,305 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:16,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316 [2022-01-19 07:12:16,305 INFO L402 AbstractCegarLoop]: === Iteration 318 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:16,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:16,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1717249950, now seen corresponding path program 14 times [2022-01-19 07:12:16,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:16,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270258235] [2022-01-19 07:12:16,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:16,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:16,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:16,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:16,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270258235] [2022-01-19 07:12:16,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270258235] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:16,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:16,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:16,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497965492] [2022-01-19 07:12:16,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:16,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:16,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:16,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:16,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:16,397 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:16,398 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 615 places, 406 transitions, 5557 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:16,398 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:16,398 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:16,398 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:17,473 INFO L129 PetriNetUnfolder]: 554/2100 cut-off events. [2022-01-19 07:12:17,473 INFO L130 PetriNetUnfolder]: For 60126/60220 co-relation queries the response was YES. [2022-01-19 07:12:17,515 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16702 conditions, 2100 events. 554/2100 cut-off events. For 60126/60220 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 15398 event pairs, 166 based on Foata normal form. 27/2056 useless extension candidates. Maximal degree in co-relation 16421. Up to 528 conditions per place. [2022-01-19 07:12:17,523 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 250 selfloop transitions, 110 changer transitions 72/573 dead transitions. [2022-01-19 07:12:17,523 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 632 places, 573 transitions, 10306 flow [2022-01-19 07:12:17,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:12:17,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:12:17,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6066 transitions. [2022-01-19 07:12:17,525 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7601503759398496 [2022-01-19 07:12:17,525 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6066 transitions. [2022-01-19 07:12:17,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6066 transitions. [2022-01-19 07:12:17,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:17,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6066 transitions. [2022-01-19 07:12:17,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.6315789473684) internal successors, (6066), 38 states have internal predecessors, (6066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:17,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:17,533 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:17,533 INFO L186 Difference]: Start difference. First operand has 615 places, 406 transitions, 5557 flow. Second operand 38 states and 6066 transitions. [2022-01-19 07:12:17,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 632 places, 573 transitions, 10306 flow [2022-01-19 07:12:17,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 573 transitions, 9398 flow, removed 331 selfloop flow, removed 25 redundant places. [2022-01-19 07:12:17,838 INFO L242 Difference]: Finished difference. Result has 629 places, 408 transitions, 5441 flow [2022-01-19 07:12:17,838 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5055, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=5441, PETRI_PLACES=629, PETRI_TRANSITIONS=408} [2022-01-19 07:12:17,838 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 442 predicate places. [2022-01-19 07:12:17,839 INFO L470 AbstractCegarLoop]: Abstraction has has 629 places, 408 transitions, 5441 flow [2022-01-19 07:12:17,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:17,839 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:17,839 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:17,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317 [2022-01-19 07:12:17,839 INFO L402 AbstractCegarLoop]: === Iteration 319 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:17,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:17,840 INFO L85 PathProgramCache]: Analyzing trace with hash 808342620, now seen corresponding path program 15 times [2022-01-19 07:12:17,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:17,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689678531] [2022-01-19 07:12:17,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:17,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:17,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:17,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:17,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:17,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689678531] [2022-01-19 07:12:17,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689678531] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:17,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:17,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:17,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220261802] [2022-01-19 07:12:17,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:17,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:17,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:17,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:17,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:17,950 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:17,951 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 629 places, 408 transitions, 5441 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:17,951 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:17,951 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:17,951 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:19,135 INFO L129 PetriNetUnfolder]: 551/2137 cut-off events. [2022-01-19 07:12:19,135 INFO L130 PetriNetUnfolder]: For 60080/60164 co-relation queries the response was YES. [2022-01-19 07:12:19,178 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16827 conditions, 2137 events. 551/2137 cut-off events. For 60080/60164 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 15851 event pairs, 198 based on Foata normal form. 15/2077 useless extension candidates. Maximal degree in co-relation 16545. Up to 539 conditions per place. [2022-01-19 07:12:19,185 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 254 selfloop transitions, 111 changer transitions 81/587 dead transitions. [2022-01-19 07:12:19,185 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 646 places, 587 transitions, 10966 flow [2022-01-19 07:12:19,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-19 07:12:19,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-01-19 07:12:19,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 6702 transitions. [2022-01-19 07:12:19,188 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7598639455782313 [2022-01-19 07:12:19,188 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 6702 transitions. [2022-01-19 07:12:19,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 6702 transitions. [2022-01-19 07:12:19,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:19,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 6702 transitions. [2022-01-19 07:12:19,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 159.57142857142858) internal successors, (6702), 42 states have internal predecessors, (6702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:19,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 210.0) internal successors, (9030), 43 states have internal predecessors, (9030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:19,196 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 210.0) internal successors, (9030), 43 states have internal predecessors, (9030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:19,196 INFO L186 Difference]: Start difference. First operand has 629 places, 408 transitions, 5441 flow. Second operand 42 states and 6702 transitions. [2022-01-19 07:12:19,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 646 places, 587 transitions, 10966 flow [2022-01-19 07:12:19,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 622 places, 587 transitions, 10616 flow, removed 114 selfloop flow, removed 24 redundant places. [2022-01-19 07:12:19,469 INFO L242 Difference]: Finished difference. Result has 657 places, 430 transitions, 6285 flow [2022-01-19 07:12:19,469 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5249, PETRI_DIFFERENCE_MINUEND_PLACES=581, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=6285, PETRI_PLACES=657, PETRI_TRANSITIONS=430} [2022-01-19 07:12:19,469 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 470 predicate places. [2022-01-19 07:12:19,469 INFO L470 AbstractCegarLoop]: Abstraction has has 657 places, 430 transitions, 6285 flow [2022-01-19 07:12:19,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:19,469 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:19,469 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:19,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318 [2022-01-19 07:12:19,470 INFO L402 AbstractCegarLoop]: === Iteration 320 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:19,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:19,470 INFO L85 PathProgramCache]: Analyzing trace with hash 350149278, now seen corresponding path program 16 times [2022-01-19 07:12:19,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:19,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384430018] [2022-01-19 07:12:19,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:19,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:19,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:19,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:19,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:19,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384430018] [2022-01-19 07:12:19,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384430018] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:19,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:19,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:19,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226288798] [2022-01-19 07:12:19,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:19,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:19,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:19,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:19,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:19,564 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:19,565 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 657 places, 430 transitions, 6285 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:19,565 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:19,565 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:19,565 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:20,560 INFO L129 PetriNetUnfolder]: 509/2004 cut-off events. [2022-01-19 07:12:20,560 INFO L130 PetriNetUnfolder]: For 58596/58674 co-relation queries the response was YES. [2022-01-19 07:12:20,601 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15922 conditions, 2004 events. 509/2004 cut-off events. For 58596/58674 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 14501 event pairs, 164 based on Foata normal form. 27/1963 useless extension candidates. Maximal degree in co-relation 15623. Up to 517 conditions per place. [2022-01-19 07:12:20,608 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 251 selfloop transitions, 93 changer transitions 70/555 dead transitions. [2022-01-19 07:12:20,608 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 657 places, 555 transitions, 10097 flow [2022-01-19 07:12:20,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:12:20,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:12:20,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4793 transitions. [2022-01-19 07:12:20,610 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7607936507936508 [2022-01-19 07:12:20,610 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4793 transitions. [2022-01-19 07:12:20,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4793 transitions. [2022-01-19 07:12:20,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:20,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4793 transitions. [2022-01-19 07:12:20,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.76666666666668) internal successors, (4793), 30 states have internal predecessors, (4793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:20,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:20,616 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:20,616 INFO L186 Difference]: Start difference. First operand has 657 places, 430 transitions, 6285 flow. Second operand 30 states and 4793 transitions. [2022-01-19 07:12:20,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 657 places, 555 transitions, 10097 flow [2022-01-19 07:12:20,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 555 transitions, 9411 flow, removed 254 selfloop flow, removed 32 redundant places. [2022-01-19 07:12:20,957 INFO L242 Difference]: Finished difference. Result has 636 places, 387 transitions, 5137 flow [2022-01-19 07:12:20,958 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5842, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=5137, PETRI_PLACES=636, PETRI_TRANSITIONS=387} [2022-01-19 07:12:20,958 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 449 predicate places. [2022-01-19 07:12:20,958 INFO L470 AbstractCegarLoop]: Abstraction has has 636 places, 387 transitions, 5137 flow [2022-01-19 07:12:20,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:20,958 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:20,958 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:20,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319 [2022-01-19 07:12:20,958 INFO L402 AbstractCegarLoop]: === Iteration 321 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:20,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:20,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1409998716, now seen corresponding path program 17 times [2022-01-19 07:12:20,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:20,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642448668] [2022-01-19 07:12:20,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:20,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:21,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:21,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:21,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642448668] [2022-01-19 07:12:21,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642448668] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:21,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:21,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:21,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194118576] [2022-01-19 07:12:21,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:21,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:21,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:21,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:21,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:21,059 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:21,060 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 636 places, 387 transitions, 5137 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:21,060 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:21,060 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:21,060 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:22,268 INFO L129 PetriNetUnfolder]: 556/2152 cut-off events. [2022-01-19 07:12:22,268 INFO L130 PetriNetUnfolder]: For 58966/59024 co-relation queries the response was YES. [2022-01-19 07:12:22,311 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16992 conditions, 2152 events. 556/2152 cut-off events. For 58966/59024 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 15989 event pairs, 188 based on Foata normal form. 17/2098 useless extension candidates. Maximal degree in co-relation 16711. Up to 519 conditions per place. [2022-01-19 07:12:22,318 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 250 selfloop transitions, 110 changer transitions 83/584 dead transitions. [2022-01-19 07:12:22,318 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 633 places, 584 transitions, 10630 flow [2022-01-19 07:12:22,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 07:12:22,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 07:12:22,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7179 transitions. [2022-01-19 07:12:22,321 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7596825396825397 [2022-01-19 07:12:22,322 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7179 transitions. [2022-01-19 07:12:22,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7179 transitions. [2022-01-19 07:12:22,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:22,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7179 transitions. [2022-01-19 07:12:22,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.53333333333333) internal successors, (7179), 45 states have internal predecessors, (7179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:22,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:22,330 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:22,330 INFO L186 Difference]: Start difference. First operand has 636 places, 387 transitions, 5137 flow. Second operand 45 states and 7179 transitions. [2022-01-19 07:12:22,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 633 places, 584 transitions, 10630 flow [2022-01-19 07:12:22,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 584 transitions, 9317 flow, removed 183 selfloop flow, removed 41 redundant places. [2022-01-19 07:12:22,611 INFO L242 Difference]: Finished difference. Result has 626 places, 412 transitions, 5254 flow [2022-01-19 07:12:22,611 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4427, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=5254, PETRI_PLACES=626, PETRI_TRANSITIONS=412} [2022-01-19 07:12:22,611 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 439 predicate places. [2022-01-19 07:12:22,611 INFO L470 AbstractCegarLoop]: Abstraction has has 626 places, 412 transitions, 5254 flow [2022-01-19 07:12:22,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:22,611 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:22,611 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:22,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320 [2022-01-19 07:12:22,612 INFO L402 AbstractCegarLoop]: === Iteration 322 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:22,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:22,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1728534254, now seen corresponding path program 18 times [2022-01-19 07:12:22,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:22,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371203869] [2022-01-19 07:12:22,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:22,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:22,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:22,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:22,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371203869] [2022-01-19 07:12:22,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371203869] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:22,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:22,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:22,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024687593] [2022-01-19 07:12:22,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:22,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:22,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:22,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:22,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:22,715 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:22,716 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 626 places, 412 transitions, 5254 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:22,716 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:22,716 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:22,716 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:23,947 INFO L129 PetriNetUnfolder]: 550/2127 cut-off events. [2022-01-19 07:12:23,947 INFO L130 PetriNetUnfolder]: For 52306/52345 co-relation queries the response was YES. [2022-01-19 07:12:23,996 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16049 conditions, 2127 events. 550/2127 cut-off events. For 52306/52345 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 15726 event pairs, 179 based on Foata normal form. 11/2068 useless extension candidates. Maximal degree in co-relation 15760. Up to 515 conditions per place. [2022-01-19 07:12:24,003 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 259 selfloop transitions, 109 changer transitions 85/594 dead transitions. [2022-01-19 07:12:24,004 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 594 transitions, 10413 flow [2022-01-19 07:12:24,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 07:12:24,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 07:12:24,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7339 transitions. [2022-01-19 07:12:24,007 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7597308488612836 [2022-01-19 07:12:24,007 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7339 transitions. [2022-01-19 07:12:24,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7339 transitions. [2022-01-19 07:12:24,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:24,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7339 transitions. [2022-01-19 07:12:24,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.54347826086956) internal successors, (7339), 46 states have internal predecessors, (7339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:24,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:24,016 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:24,016 INFO L186 Difference]: Start difference. First operand has 626 places, 412 transitions, 5254 flow. Second operand 46 states and 7339 transitions. [2022-01-19 07:12:24,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 594 transitions, 10413 flow [2022-01-19 07:12:24,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 609 places, 594 transitions, 9890 flow, removed 221 selfloop flow, removed 30 redundant places. [2022-01-19 07:12:24,280 INFO L242 Difference]: Finished difference. Result has 642 places, 417 transitions, 5571 flow [2022-01-19 07:12:24,280 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5054, PETRI_DIFFERENCE_MINUEND_PLACES=564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=5571, PETRI_PLACES=642, PETRI_TRANSITIONS=417} [2022-01-19 07:12:24,280 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 455 predicate places. [2022-01-19 07:12:24,280 INFO L470 AbstractCegarLoop]: Abstraction has has 642 places, 417 transitions, 5571 flow [2022-01-19 07:12:24,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:24,280 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:24,281 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:24,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable321 [2022-01-19 07:12:24,281 INFO L402 AbstractCegarLoop]: === Iteration 323 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:24,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:24,281 INFO L85 PathProgramCache]: Analyzing trace with hash 913497400, now seen corresponding path program 19 times [2022-01-19 07:12:24,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:24,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956325267] [2022-01-19 07:12:24,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:24,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:24,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:24,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:24,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956325267] [2022-01-19 07:12:24,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956325267] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:24,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:24,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:24,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375069869] [2022-01-19 07:12:24,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:24,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:24,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:24,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:24,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:24,378 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:24,379 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 642 places, 417 transitions, 5571 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:24,379 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:24,379 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:24,379 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:25,490 INFO L129 PetriNetUnfolder]: 568/2151 cut-off events. [2022-01-19 07:12:25,490 INFO L130 PetriNetUnfolder]: For 54214/54269 co-relation queries the response was YES. [2022-01-19 07:12:25,537 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16563 conditions, 2151 events. 568/2151 cut-off events. For 54214/54269 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 15931 event pairs, 193 based on Foata normal form. 17/2091 useless extension candidates. Maximal degree in co-relation 16268. Up to 536 conditions per place. [2022-01-19 07:12:25,546 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 250 selfloop transitions, 124 changer transitions 73/588 dead transitions. [2022-01-19 07:12:25,546 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 645 places, 588 transitions, 10323 flow [2022-01-19 07:12:25,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 07:12:25,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 07:12:25,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5917 transitions. [2022-01-19 07:12:25,548 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7615186615186615 [2022-01-19 07:12:25,548 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5917 transitions. [2022-01-19 07:12:25,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5917 transitions. [2022-01-19 07:12:25,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:25,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5917 transitions. [2022-01-19 07:12:25,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 159.9189189189189) internal successors, (5917), 37 states have internal predecessors, (5917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:25,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:25,628 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:25,628 INFO L186 Difference]: Start difference. First operand has 642 places, 417 transitions, 5571 flow. Second operand 37 states and 5917 transitions. [2022-01-19 07:12:25,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 645 places, 588 transitions, 10323 flow [2022-01-19 07:12:25,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 615 places, 588 transitions, 9837 flow, removed 187 selfloop flow, removed 30 redundant places. [2022-01-19 07:12:25,927 INFO L242 Difference]: Finished difference. Result has 639 places, 436 transitions, 6125 flow [2022-01-19 07:12:25,927 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5335, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=6125, PETRI_PLACES=639, PETRI_TRANSITIONS=436} [2022-01-19 07:12:25,928 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 452 predicate places. [2022-01-19 07:12:25,928 INFO L470 AbstractCegarLoop]: Abstraction has has 639 places, 436 transitions, 6125 flow [2022-01-19 07:12:25,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:25,928 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:25,928 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:25,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable322 [2022-01-19 07:12:25,928 INFO L402 AbstractCegarLoop]: === Iteration 324 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:25,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:25,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1548259760, now seen corresponding path program 20 times [2022-01-19 07:12:25,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:25,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932657337] [2022-01-19 07:12:25,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:25,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:26,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:26,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:26,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932657337] [2022-01-19 07:12:26,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932657337] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:26,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:26,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:26,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494702415] [2022-01-19 07:12:26,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:26,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:26,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:26,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:26,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:26,028 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:26,029 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 639 places, 436 transitions, 6125 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:26,029 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:26,029 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:26,029 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:27,159 INFO L129 PetriNetUnfolder]: 562/2178 cut-off events. [2022-01-19 07:12:27,159 INFO L130 PetriNetUnfolder]: For 54336/54392 co-relation queries the response was YES. [2022-01-19 07:12:27,212 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16671 conditions, 2178 events. 562/2178 cut-off events. For 54336/54392 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 16270 event pairs, 190 based on Foata normal form. 17/2123 useless extension candidates. Maximal degree in co-relation 16380. Up to 532 conditions per place. [2022-01-19 07:12:27,219 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 257 selfloop transitions, 123 changer transitions 72/593 dead transitions. [2022-01-19 07:12:27,219 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 653 places, 593 transitions, 10654 flow [2022-01-19 07:12:27,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:12:27,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:12:27,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6077 transitions. [2022-01-19 07:12:27,222 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7615288220551378 [2022-01-19 07:12:27,222 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6077 transitions. [2022-01-19 07:12:27,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6077 transitions. [2022-01-19 07:12:27,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:27,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6077 transitions. [2022-01-19 07:12:27,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.92105263157896) internal successors, (6077), 38 states have internal predecessors, (6077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:27,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:27,229 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:27,229 INFO L186 Difference]: Start difference. First operand has 639 places, 436 transitions, 6125 flow. Second operand 38 states and 6077 transitions. [2022-01-19 07:12:27,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 653 places, 593 transitions, 10654 flow [2022-01-19 07:12:27,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 632 places, 593 transitions, 10255 flow, removed 146 selfloop flow, removed 21 redundant places. [2022-01-19 07:12:27,555 INFO L242 Difference]: Finished difference. Result has 655 places, 442 transitions, 6460 flow [2022-01-19 07:12:27,556 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5919, PETRI_DIFFERENCE_MINUEND_PLACES=595, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=6460, PETRI_PLACES=655, PETRI_TRANSITIONS=442} [2022-01-19 07:12:27,556 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 468 predicate places. [2022-01-19 07:12:27,556 INFO L470 AbstractCegarLoop]: Abstraction has has 655 places, 442 transitions, 6460 flow [2022-01-19 07:12:27,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:27,556 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:27,556 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:27,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable323 [2022-01-19 07:12:27,556 INFO L402 AbstractCegarLoop]: === Iteration 325 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:27,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:27,557 INFO L85 PathProgramCache]: Analyzing trace with hash -870591154, now seen corresponding path program 21 times [2022-01-19 07:12:27,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:27,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974338775] [2022-01-19 07:12:27,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:27,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:27,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:27,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:27,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974338775] [2022-01-19 07:12:27,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974338775] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:27,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:27,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:27,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510976048] [2022-01-19 07:12:27,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:27,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:27,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:27,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:27,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:27,658 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:27,658 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 655 places, 442 transitions, 6460 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:27,658 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:27,658 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:27,658 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:28,775 INFO L129 PetriNetUnfolder]: 558/2180 cut-off events. [2022-01-19 07:12:28,775 INFO L130 PetriNetUnfolder]: For 55349/55405 co-relation queries the response was YES. [2022-01-19 07:12:28,827 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16734 conditions, 2180 events. 558/2180 cut-off events. For 55349/55405 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 16319 event pairs, 182 based on Foata normal form. 17/2130 useless extension candidates. Maximal degree in co-relation 16437. Up to 528 conditions per place. [2022-01-19 07:12:28,835 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 265 selfloop transitions, 119 changer transitions 74/599 dead transitions. [2022-01-19 07:12:28,835 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 599 transitions, 11024 flow [2022-01-19 07:12:28,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:12:28,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:12:28,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6077 transitions. [2022-01-19 07:12:28,837 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7615288220551378 [2022-01-19 07:12:28,838 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6077 transitions. [2022-01-19 07:12:28,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6077 transitions. [2022-01-19 07:12:28,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:28,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6077 transitions. [2022-01-19 07:12:28,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.92105263157896) internal successors, (6077), 38 states have internal predecessors, (6077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:28,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:28,845 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:28,845 INFO L186 Difference]: Start difference. First operand has 655 places, 442 transitions, 6460 flow. Second operand 38 states and 6077 transitions. [2022-01-19 07:12:28,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 599 transitions, 11024 flow [2022-01-19 07:12:29,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 648 places, 599 transitions, 10651 flow, removed 140 selfloop flow, removed 20 redundant places. [2022-01-19 07:12:29,170 INFO L242 Difference]: Finished difference. Result has 671 places, 447 transitions, 6738 flow [2022-01-19 07:12:29,170 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6243, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=6738, PETRI_PLACES=671, PETRI_TRANSITIONS=447} [2022-01-19 07:12:29,170 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 484 predicate places. [2022-01-19 07:12:29,170 INFO L470 AbstractCegarLoop]: Abstraction has has 671 places, 447 transitions, 6738 flow [2022-01-19 07:12:29,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:29,171 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:29,171 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:29,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable324 [2022-01-19 07:12:29,171 INFO L402 AbstractCegarLoop]: === Iteration 326 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:29,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:29,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1594329086, now seen corresponding path program 22 times [2022-01-19 07:12:29,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:29,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916516413] [2022-01-19 07:12:29,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:29,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:29,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:29,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:29,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916516413] [2022-01-19 07:12:29,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916516413] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:29,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:29,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:29,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783384629] [2022-01-19 07:12:29,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:29,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:29,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:29,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:29,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:29,284 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:29,285 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 671 places, 447 transitions, 6738 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:29,285 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:29,285 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:29,285 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:30,302 INFO L129 PetriNetUnfolder]: 546/2142 cut-off events. [2022-01-19 07:12:30,302 INFO L130 PetriNetUnfolder]: For 55242/55278 co-relation queries the response was YES. [2022-01-19 07:12:30,346 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16559 conditions, 2142 events. 546/2142 cut-off events. For 55242/55278 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 15911 event pairs, 186 based on Foata normal form. 11/2085 useless extension candidates. Maximal degree in co-relation 16256. Up to 535 conditions per place. [2022-01-19 07:12:30,354 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 258 selfloop transitions, 120 changer transitions 62/581 dead transitions. [2022-01-19 07:12:30,354 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 676 places, 581 transitions, 10675 flow [2022-01-19 07:12:30,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:12:30,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:12:30,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4815 transitions. [2022-01-19 07:12:30,356 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2022-01-19 07:12:30,356 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4815 transitions. [2022-01-19 07:12:30,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4815 transitions. [2022-01-19 07:12:30,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:30,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4815 transitions. [2022-01-19 07:12:30,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.5) internal successors, (4815), 30 states have internal predecessors, (4815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:30,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:30,362 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:30,362 INFO L186 Difference]: Start difference. First operand has 671 places, 447 transitions, 6738 flow. Second operand 30 states and 4815 transitions. [2022-01-19 07:12:30,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 676 places, 581 transitions, 10675 flow [2022-01-19 07:12:30,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 655 places, 581 transitions, 10314 flow, removed 134 selfloop flow, removed 21 redundant places. [2022-01-19 07:12:30,705 INFO L242 Difference]: Finished difference. Result has 668 places, 453 transitions, 6955 flow [2022-01-19 07:12:30,705 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6501, PETRI_DIFFERENCE_MINUEND_PLACES=626, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=6955, PETRI_PLACES=668, PETRI_TRANSITIONS=453} [2022-01-19 07:12:30,705 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 481 predicate places. [2022-01-19 07:12:30,705 INFO L470 AbstractCegarLoop]: Abstraction has has 668 places, 453 transitions, 6955 flow [2022-01-19 07:12:30,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:30,706 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:30,706 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:30,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325 [2022-01-19 07:12:30,706 INFO L402 AbstractCegarLoop]: === Iteration 327 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:30,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:30,706 INFO L85 PathProgramCache]: Analyzing trace with hash 581066740, now seen corresponding path program 23 times [2022-01-19 07:12:30,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:30,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265468110] [2022-01-19 07:12:30,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:30,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:30,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:30,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:30,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:30,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265468110] [2022-01-19 07:12:30,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265468110] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:30,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:30,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:30,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334770348] [2022-01-19 07:12:30,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:30,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:30,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:30,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:30,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:30,800 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:30,800 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 668 places, 453 transitions, 6955 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:30,800 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:30,800 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:30,800 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:31,775 INFO L129 PetriNetUnfolder]: 554/2148 cut-off events. [2022-01-19 07:12:31,775 INFO L130 PetriNetUnfolder]: For 56622/56657 co-relation queries the response was YES. [2022-01-19 07:12:31,828 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16824 conditions, 2148 events. 554/2148 cut-off events. For 56622/56657 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 15930 event pairs, 181 based on Foata normal form. 11/2091 useless extension candidates. Maximal degree in co-relation 16526. Up to 540 conditions per place. [2022-01-19 07:12:31,836 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 257 selfloop transitions, 134 changer transitions 63/595 dead transitions. [2022-01-19 07:12:31,836 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 681 places, 595 transitions, 11141 flow [2022-01-19 07:12:31,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:12:31,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:12:31,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4655 transitions. [2022-01-19 07:12:31,839 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2022-01-19 07:12:31,839 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4655 transitions. [2022-01-19 07:12:31,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4655 transitions. [2022-01-19 07:12:31,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:31,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4655 transitions. [2022-01-19 07:12:31,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.51724137931035) internal successors, (4655), 29 states have internal predecessors, (4655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:31,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:31,846 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:31,846 INFO L186 Difference]: Start difference. First operand has 668 places, 453 transitions, 6955 flow. Second operand 29 states and 4655 transitions. [2022-01-19 07:12:31,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 681 places, 595 transitions, 11141 flow [2022-01-19 07:12:32,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 667 places, 595 transitions, 10808 flow, removed 109 selfloop flow, removed 14 redundant places. [2022-01-19 07:12:32,216 INFO L242 Difference]: Finished difference. Result has 681 places, 465 transitions, 7380 flow [2022-01-19 07:12:32,216 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6724, PETRI_DIFFERENCE_MINUEND_PLACES=639, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7380, PETRI_PLACES=681, PETRI_TRANSITIONS=465} [2022-01-19 07:12:32,216 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 494 predicate places. [2022-01-19 07:12:32,216 INFO L470 AbstractCegarLoop]: Abstraction has has 681 places, 465 transitions, 7380 flow [2022-01-19 07:12:32,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:32,217 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:32,217 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:32,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326 [2022-01-19 07:12:32,217 INFO L402 AbstractCegarLoop]: === Iteration 328 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:32,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:32,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1205096152, now seen corresponding path program 24 times [2022-01-19 07:12:32,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:32,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387110850] [2022-01-19 07:12:32,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:32,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:32,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:32,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:32,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387110850] [2022-01-19 07:12:32,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387110850] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:32,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:32,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:32,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232652341] [2022-01-19 07:12:32,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:32,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:32,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:32,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:32,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:32,315 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:32,316 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 681 places, 465 transitions, 7380 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:32,316 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:32,316 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:32,316 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:33,356 INFO L129 PetriNetUnfolder]: 556/2160 cut-off events. [2022-01-19 07:12:33,356 INFO L130 PetriNetUnfolder]: For 57522/57578 co-relation queries the response was YES. [2022-01-19 07:12:33,402 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17127 conditions, 2160 events. 556/2160 cut-off events. For 57522/57578 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 16055 event pairs, 187 based on Foata normal form. 17/2107 useless extension candidates. Maximal degree in co-relation 16825. Up to 543 conditions per place. [2022-01-19 07:12:33,409 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 263 selfloop transitions, 134 changer transitions 61/599 dead transitions. [2022-01-19 07:12:33,409 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 695 places, 599 transitions, 11477 flow [2022-01-19 07:12:33,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:12:33,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:12:33,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4655 transitions. [2022-01-19 07:12:33,412 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2022-01-19 07:12:33,412 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4655 transitions. [2022-01-19 07:12:33,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4655 transitions. [2022-01-19 07:12:33,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:33,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4655 transitions. [2022-01-19 07:12:33,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.51724137931035) internal successors, (4655), 29 states have internal predecessors, (4655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:33,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:33,418 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:33,418 INFO L186 Difference]: Start difference. First operand has 681 places, 465 transitions, 7380 flow. Second operand 29 states and 4655 transitions. [2022-01-19 07:12:33,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 695 places, 599 transitions, 11477 flow [2022-01-19 07:12:33,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 682 places, 599 transitions, 11166 flow, removed 78 selfloop flow, removed 13 redundant places. [2022-01-19 07:12:33,804 INFO L242 Difference]: Finished difference. Result has 695 places, 476 transitions, 7798 flow [2022-01-19 07:12:33,805 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7155, PETRI_DIFFERENCE_MINUEND_PLACES=654, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7798, PETRI_PLACES=695, PETRI_TRANSITIONS=476} [2022-01-19 07:12:33,805 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 508 predicate places. [2022-01-19 07:12:33,805 INFO L470 AbstractCegarLoop]: Abstraction has has 695 places, 476 transitions, 7798 flow [2022-01-19 07:12:33,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:33,805 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:33,805 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:33,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327 [2022-01-19 07:12:33,805 INFO L402 AbstractCegarLoop]: === Iteration 329 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:33,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:33,806 INFO L85 PathProgramCache]: Analyzing trace with hash -93390314, now seen corresponding path program 25 times [2022-01-19 07:12:33,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:33,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860246081] [2022-01-19 07:12:33,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:33,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:33,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:33,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:33,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860246081] [2022-01-19 07:12:33,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860246081] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:33,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:33,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:33,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425853017] [2022-01-19 07:12:33,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:33,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:33,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:33,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:33,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:33,909 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:33,909 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 695 places, 476 transitions, 7798 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:33,909 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:33,909 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:33,909 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:34,918 INFO L129 PetriNetUnfolder]: 551/2149 cut-off events. [2022-01-19 07:12:34,919 INFO L130 PetriNetUnfolder]: For 57321/57379 co-relation queries the response was YES. [2022-01-19 07:12:34,962 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17011 conditions, 2149 events. 551/2149 cut-off events. For 57321/57379 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 15945 event pairs, 182 based on Foata normal form. 17/2096 useless extension candidates. Maximal degree in co-relation 16704. Up to 539 conditions per place. [2022-01-19 07:12:34,969 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 275 selfloop transitions, 128 changer transitions 63/607 dead transitions. [2022-01-19 07:12:34,969 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 710 places, 607 transitions, 11738 flow [2022-01-19 07:12:34,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:12:34,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:12:34,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4815 transitions. [2022-01-19 07:12:34,972 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2022-01-19 07:12:34,972 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4815 transitions. [2022-01-19 07:12:34,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4815 transitions. [2022-01-19 07:12:34,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:34,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4815 transitions. [2022-01-19 07:12:34,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.5) internal successors, (4815), 30 states have internal predecessors, (4815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:34,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:34,978 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:34,978 INFO L186 Difference]: Start difference. First operand has 695 places, 476 transitions, 7798 flow. Second operand 30 states and 4815 transitions. [2022-01-19 07:12:34,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 710 places, 607 transitions, 11738 flow [2022-01-19 07:12:35,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 698 places, 607 transitions, 11400 flow, removed 57 selfloop flow, removed 12 redundant places. [2022-01-19 07:12:35,355 INFO L242 Difference]: Finished difference. Result has 711 places, 481 transitions, 7948 flow [2022-01-19 07:12:35,355 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7497, PETRI_DIFFERENCE_MINUEND_PLACES=669, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7948, PETRI_PLACES=711, PETRI_TRANSITIONS=481} [2022-01-19 07:12:35,356 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 524 predicate places. [2022-01-19 07:12:35,356 INFO L470 AbstractCegarLoop]: Abstraction has has 711 places, 481 transitions, 7948 flow [2022-01-19 07:12:35,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:35,356 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:35,356 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:35,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328 [2022-01-19 07:12:35,356 INFO L402 AbstractCegarLoop]: === Iteration 330 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:35,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:35,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1404291102, now seen corresponding path program 26 times [2022-01-19 07:12:35,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:35,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51646652] [2022-01-19 07:12:35,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:35,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:35,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:35,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:35,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51646652] [2022-01-19 07:12:35,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51646652] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:35,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:35,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:35,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913354662] [2022-01-19 07:12:35,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:35,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:35,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:35,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:35,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:35,457 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:35,458 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 711 places, 481 transitions, 7948 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:35,458 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:35,458 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:35,458 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:36,514 INFO L129 PetriNetUnfolder]: 533/2120 cut-off events. [2022-01-19 07:12:36,514 INFO L130 PetriNetUnfolder]: For 56500/56556 co-relation queries the response was YES. [2022-01-19 07:12:36,560 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16697 conditions, 2120 events. 533/2120 cut-off events. For 56500/56556 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 15713 event pairs, 179 based on Foata normal form. 17/2069 useless extension candidates. Maximal degree in co-relation 16385. Up to 534 conditions per place. [2022-01-19 07:12:36,567 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 268 selfloop transitions, 112 changer transitions 67/588 dead transitions. [2022-01-19 07:12:36,567 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 725 places, 588 transitions, 11233 flow [2022-01-19 07:12:36,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:12:36,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:12:36,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4806 transitions. [2022-01-19 07:12:36,569 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7628571428571429 [2022-01-19 07:12:36,569 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4806 transitions. [2022-01-19 07:12:36,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4806 transitions. [2022-01-19 07:12:36,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:36,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4806 transitions. [2022-01-19 07:12:36,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.2) internal successors, (4806), 30 states have internal predecessors, (4806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:36,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:36,575 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:36,575 INFO L186 Difference]: Start difference. First operand has 711 places, 481 transitions, 7948 flow. Second operand 30 states and 4806 transitions. [2022-01-19 07:12:36,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 725 places, 588 transitions, 11233 flow [2022-01-19 07:12:36,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 711 places, 588 transitions, 10929 flow, removed 99 selfloop flow, removed 14 redundant places. [2022-01-19 07:12:36,948 INFO L242 Difference]: Finished difference. Result has 720 places, 459 transitions, 7336 flow [2022-01-19 07:12:36,949 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7694, PETRI_DIFFERENCE_MINUEND_PLACES=682, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7336, PETRI_PLACES=720, PETRI_TRANSITIONS=459} [2022-01-19 07:12:36,949 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 533 predicate places. [2022-01-19 07:12:36,949 INFO L470 AbstractCegarLoop]: Abstraction has has 720 places, 459 transitions, 7336 flow [2022-01-19 07:12:36,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:36,949 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:36,949 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:36,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329 [2022-01-19 07:12:36,949 INFO L402 AbstractCegarLoop]: === Iteration 331 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:36,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:36,950 INFO L85 PathProgramCache]: Analyzing trace with hash -72700492, now seen corresponding path program 27 times [2022-01-19 07:12:36,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:36,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499697673] [2022-01-19 07:12:36,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:36,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:37,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:37,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:37,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499697673] [2022-01-19 07:12:37,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499697673] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:37,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:37,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:37,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659582013] [2022-01-19 07:12:37,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:37,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:37,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:37,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:37,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:37,047 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:37,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 720 places, 459 transitions, 7336 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:37,048 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:37,048 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:37,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:37,994 INFO L129 PetriNetUnfolder]: 506/2032 cut-off events. [2022-01-19 07:12:37,994 INFO L130 PetriNetUnfolder]: For 55083/55120 co-relation queries the response was YES. [2022-01-19 07:12:38,042 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15920 conditions, 2032 events. 506/2032 cut-off events. For 55083/55120 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 14800 event pairs, 174 based on Foata normal form. 11/1976 useless extension candidates. Maximal degree in co-relation 15609. Up to 519 conditions per place. [2022-01-19 07:12:38,049 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 254 selfloop transitions, 88 changer transitions 66/549 dead transitions. [2022-01-19 07:12:38,049 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 719 places, 549 transitions, 10179 flow [2022-01-19 07:12:38,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 07:12:38,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 07:12:38,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4332 transitions. [2022-01-19 07:12:38,052 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764021164021164 [2022-01-19 07:12:38,052 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4332 transitions. [2022-01-19 07:12:38,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4332 transitions. [2022-01-19 07:12:38,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:38,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4332 transitions. [2022-01-19 07:12:38,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 160.44444444444446) internal successors, (4332), 27 states have internal predecessors, (4332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:38,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:38,057 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:38,057 INFO L186 Difference]: Start difference. First operand has 720 places, 459 transitions, 7336 flow. Second operand 27 states and 4332 transitions. [2022-01-19 07:12:38,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 719 places, 549 transitions, 10179 flow [2022-01-19 07:12:38,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 690 places, 549 transitions, 9722 flow, removed 57 selfloop flow, removed 29 redundant places. [2022-01-19 07:12:38,409 INFO L242 Difference]: Finished difference. Result has 697 places, 422 transitions, 6278 flow [2022-01-19 07:12:38,409 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6951, PETRI_DIFFERENCE_MINUEND_PLACES=664, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=6278, PETRI_PLACES=697, PETRI_TRANSITIONS=422} [2022-01-19 07:12:38,409 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 510 predicate places. [2022-01-19 07:12:38,409 INFO L470 AbstractCegarLoop]: Abstraction has has 697 places, 422 transitions, 6278 flow [2022-01-19 07:12:38,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:38,410 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:38,410 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:38,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330 [2022-01-19 07:12:38,410 INFO L402 AbstractCegarLoop]: === Iteration 332 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:38,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:38,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1545404012, now seen corresponding path program 28 times [2022-01-19 07:12:38,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:38,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035223395] [2022-01-19 07:12:38,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:38,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:38,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:38,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:38,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035223395] [2022-01-19 07:12:38,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035223395] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:38,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:38,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:38,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3306947] [2022-01-19 07:12:38,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:38,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:38,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:38,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:38,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:38,504 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:38,505 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 697 places, 422 transitions, 6278 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:38,505 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:38,505 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:38,505 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:39,420 INFO L129 PetriNetUnfolder]: 487/1967 cut-off events. [2022-01-19 07:12:39,420 INFO L130 PetriNetUnfolder]: For 51682/51719 co-relation queries the response was YES. [2022-01-19 07:12:39,466 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15196 conditions, 1967 events. 487/1967 cut-off events. For 51682/51719 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 14163 event pairs, 171 based on Foata normal form. 11/1911 useless extension candidates. Maximal degree in co-relation 14894. Up to 508 conditions per place. [2022-01-19 07:12:39,472 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 235 selfloop transitions, 82 changer transitions 65/523 dead transitions. [2022-01-19 07:12:39,472 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 684 places, 523 transitions, 9296 flow [2022-01-19 07:12:39,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 07:12:39,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 07:12:39,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4487 transitions. [2022-01-19 07:12:39,475 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763095238095238 [2022-01-19 07:12:39,475 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4487 transitions. [2022-01-19 07:12:39,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4487 transitions. [2022-01-19 07:12:39,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:39,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4487 transitions. [2022-01-19 07:12:39,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.25) internal successors, (4487), 28 states have internal predecessors, (4487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:39,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:39,480 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:39,480 INFO L186 Difference]: Start difference. First operand has 697 places, 422 transitions, 6278 flow. Second operand 28 states and 4487 transitions. [2022-01-19 07:12:39,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 684 places, 523 transitions, 9296 flow [2022-01-19 07:12:39,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 646 places, 523 transitions, 8559 flow, removed 50 selfloop flow, removed 38 redundant places. [2022-01-19 07:12:39,781 INFO L242 Difference]: Finished difference. Result has 655 places, 397 transitions, 5322 flow [2022-01-19 07:12:39,782 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5684, PETRI_DIFFERENCE_MINUEND_PLACES=619, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=5322, PETRI_PLACES=655, PETRI_TRANSITIONS=397} [2022-01-19 07:12:39,782 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 468 predicate places. [2022-01-19 07:12:39,782 INFO L470 AbstractCegarLoop]: Abstraction has has 655 places, 397 transitions, 5322 flow [2022-01-19 07:12:39,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:39,782 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:39,782 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:39,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable331 [2022-01-19 07:12:39,782 INFO L402 AbstractCegarLoop]: === Iteration 333 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:39,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:39,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1810144978, now seen corresponding path program 29 times [2022-01-19 07:12:39,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:39,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594164150] [2022-01-19 07:12:39,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:39,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:39,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:39,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:39,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594164150] [2022-01-19 07:12:39,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594164150] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:39,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:39,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:39,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053032826] [2022-01-19 07:12:39,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:39,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:39,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:39,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:39,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:39,879 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:39,880 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 655 places, 397 transitions, 5322 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:39,880 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:39,880 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:39,880 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:40,765 INFO L129 PetriNetUnfolder]: 454/1836 cut-off events. [2022-01-19 07:12:40,766 INFO L130 PetriNetUnfolder]: For 43585/43619 co-relation queries the response was YES. [2022-01-19 07:12:40,801 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13677 conditions, 1836 events. 454/1836 cut-off events. For 43585/43619 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 12920 event pairs, 166 based on Foata normal form. 11/1782 useless extension candidates. Maximal degree in co-relation 13387. Up to 487 conditions per place. [2022-01-19 07:12:40,806 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 208 selfloop transitions, 57 changer transitions 68/474 dead transitions. [2022-01-19 07:12:40,807 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 651 places, 474 transitions, 7605 flow [2022-01-19 07:12:40,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:12:40,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:12:40,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4783 transitions. [2022-01-19 07:12:40,809 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7592063492063492 [2022-01-19 07:12:40,809 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4783 transitions. [2022-01-19 07:12:40,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4783 transitions. [2022-01-19 07:12:40,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:40,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4783 transitions. [2022-01-19 07:12:40,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.43333333333334) internal successors, (4783), 30 states have internal predecessors, (4783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:40,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:40,815 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:40,815 INFO L186 Difference]: Start difference. First operand has 655 places, 397 transitions, 5322 flow. Second operand 30 states and 4783 transitions. [2022-01-19 07:12:40,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 651 places, 474 transitions, 7605 flow [2022-01-19 07:12:41,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 474 transitions, 7141 flow, removed 36 selfloop flow, removed 34 redundant places. [2022-01-19 07:12:41,045 INFO L242 Difference]: Finished difference. Result has 622 places, 346 transitions, 4005 flow [2022-01-19 07:12:41,045 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4902, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=4005, PETRI_PLACES=622, PETRI_TRANSITIONS=346} [2022-01-19 07:12:41,046 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 435 predicate places. [2022-01-19 07:12:41,046 INFO L470 AbstractCegarLoop]: Abstraction has has 622 places, 346 transitions, 4005 flow [2022-01-19 07:12:41,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:41,046 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:41,046 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:41,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332 [2022-01-19 07:12:41,046 INFO L402 AbstractCegarLoop]: === Iteration 334 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:41,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:41,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1755102784, now seen corresponding path program 30 times [2022-01-19 07:12:41,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:41,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447125473] [2022-01-19 07:12:41,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:41,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:41,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:41,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:41,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447125473] [2022-01-19 07:12:41,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447125473] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:41,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:41,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:41,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496222713] [2022-01-19 07:12:41,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:41,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:41,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:41,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:41,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:41,147 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:41,148 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 622 places, 346 transitions, 4005 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:41,148 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:41,148 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:41,148 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:42,169 INFO L129 PetriNetUnfolder]: 478/1908 cut-off events. [2022-01-19 07:12:42,169 INFO L130 PetriNetUnfolder]: For 44553/44580 co-relation queries the response was YES. [2022-01-19 07:12:42,207 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14153 conditions, 1908 events. 478/1908 cut-off events. For 44553/44580 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 13539 event pairs, 182 based on Foata normal form. 5/1848 useless extension candidates. Maximal degree in co-relation 13877. Up to 487 conditions per place. [2022-01-19 07:12:42,214 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 208 selfloop transitions, 72 changer transitions 66/487 dead transitions. [2022-01-19 07:12:42,215 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 487 transitions, 7947 flow [2022-01-19 07:12:42,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:12:42,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:12:42,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6072 transitions. [2022-01-19 07:12:42,218 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7609022556390977 [2022-01-19 07:12:42,218 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6072 transitions. [2022-01-19 07:12:42,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6072 transitions. [2022-01-19 07:12:42,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:42,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6072 transitions. [2022-01-19 07:12:42,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.78947368421052) internal successors, (6072), 38 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:42,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:42,228 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:42,228 INFO L186 Difference]: Start difference. First operand has 622 places, 346 transitions, 4005 flow. Second operand 38 states and 6072 transitions. [2022-01-19 07:12:42,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 487 transitions, 7947 flow [2022-01-19 07:12:42,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 487 transitions, 7152 flow, removed 85 selfloop flow, removed 38 redundant places. [2022-01-19 07:12:42,438 INFO L242 Difference]: Finished difference. Result has 583 places, 364 transitions, 4210 flow [2022-01-19 07:12:42,438 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3527, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=4210, PETRI_PLACES=583, PETRI_TRANSITIONS=364} [2022-01-19 07:12:42,439 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 396 predicate places. [2022-01-19 07:12:42,439 INFO L470 AbstractCegarLoop]: Abstraction has has 583 places, 364 transitions, 4210 flow [2022-01-19 07:12:42,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:42,439 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:42,439 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:42,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable333 [2022-01-19 07:12:42,439 INFO L402 AbstractCegarLoop]: === Iteration 335 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:42,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:42,440 INFO L85 PathProgramCache]: Analyzing trace with hash -853020034, now seen corresponding path program 31 times [2022-01-19 07:12:42,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:42,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920382343] [2022-01-19 07:12:42,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:42,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:42,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:42,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:42,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:42,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920382343] [2022-01-19 07:12:42,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920382343] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:42,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:42,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:42,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624469277] [2022-01-19 07:12:42,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:42,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:42,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:42,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:42,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:42,556 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:42,556 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 364 transitions, 4210 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:42,556 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:42,556 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:42,556 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:43,707 INFO L129 PetriNetUnfolder]: 506/1981 cut-off events. [2022-01-19 07:12:43,707 INFO L130 PetriNetUnfolder]: For 44801/44844 co-relation queries the response was YES. [2022-01-19 07:12:43,746 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14499 conditions, 1981 events. 506/1981 cut-off events. For 44801/44844 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 14194 event pairs, 197 based on Foata normal form. 11/1925 useless extension candidates. Maximal degree in co-relation 14227. Up to 487 conditions per place. [2022-01-19 07:12:43,753 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 214 selfloop transitions, 84 changer transitions 66/505 dead transitions. [2022-01-19 07:12:43,753 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 505 transitions, 8245 flow [2022-01-19 07:12:43,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 07:12:43,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 07:12:43,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5604 transitions. [2022-01-19 07:12:43,756 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7624489795918368 [2022-01-19 07:12:43,756 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5604 transitions. [2022-01-19 07:12:43,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5604 transitions. [2022-01-19 07:12:43,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:43,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5604 transitions. [2022-01-19 07:12:43,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 160.11428571428573) internal successors, (5604), 35 states have internal predecessors, (5604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:43,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:43,763 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:43,763 INFO L186 Difference]: Start difference. First operand has 583 places, 364 transitions, 4210 flow. Second operand 35 states and 5604 transitions. [2022-01-19 07:12:43,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 505 transitions, 8245 flow [2022-01-19 07:12:43,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 505 transitions, 7576 flow, removed 291 selfloop flow, removed 16 redundant places. [2022-01-19 07:12:43,984 INFO L242 Difference]: Finished difference. Result has 603 places, 383 transitions, 4624 flow [2022-01-19 07:12:43,984 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3920, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4624, PETRI_PLACES=603, PETRI_TRANSITIONS=383} [2022-01-19 07:12:43,985 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 416 predicate places. [2022-01-19 07:12:43,985 INFO L470 AbstractCegarLoop]: Abstraction has has 603 places, 383 transitions, 4624 flow [2022-01-19 07:12:43,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:43,985 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:43,985 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:43,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable334 [2022-01-19 07:12:43,985 INFO L402 AbstractCegarLoop]: === Iteration 336 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:43,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:43,985 INFO L85 PathProgramCache]: Analyzing trace with hash 418332166, now seen corresponding path program 32 times [2022-01-19 07:12:43,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:43,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928338433] [2022-01-19 07:12:43,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:43,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:43,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:44,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:44,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:44,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928338433] [2022-01-19 07:12:44,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928338433] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:44,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:44,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:44,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151833843] [2022-01-19 07:12:44,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:44,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:44,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:44,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:44,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:44,093 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:44,094 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 383 transitions, 4624 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:44,094 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:44,094 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:44,094 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:45,198 INFO L129 PetriNetUnfolder]: 530/2049 cut-off events. [2022-01-19 07:12:45,198 INFO L130 PetriNetUnfolder]: For 49287/49333 co-relation queries the response was YES. [2022-01-19 07:12:45,243 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15404 conditions, 2049 events. 530/2049 cut-off events. For 49287/49333 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 14860 event pairs, 195 based on Foata normal form. 15/1995 useless extension candidates. Maximal degree in co-relation 15120. Up to 487 conditions per place. [2022-01-19 07:12:45,250 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 227 selfloop transitions, 88 changer transitions 66/522 dead transitions. [2022-01-19 07:12:45,250 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 618 places, 522 transitions, 8727 flow [2022-01-19 07:12:45,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 07:12:45,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 07:12:45,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5918 transitions. [2022-01-19 07:12:45,253 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616473616473617 [2022-01-19 07:12:45,253 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5918 transitions. [2022-01-19 07:12:45,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5918 transitions. [2022-01-19 07:12:45,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:45,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5918 transitions. [2022-01-19 07:12:45,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 159.94594594594594) internal successors, (5918), 37 states have internal predecessors, (5918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:45,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:45,260 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:45,260 INFO L186 Difference]: Start difference. First operand has 603 places, 383 transitions, 4624 flow. Second operand 37 states and 5918 transitions. [2022-01-19 07:12:45,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 618 places, 522 transitions, 8727 flow [2022-01-19 07:12:45,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 522 transitions, 8196 flow, removed 200 selfloop flow, removed 20 redundant places. [2022-01-19 07:12:45,473 INFO L242 Difference]: Finished difference. Result has 623 places, 400 transitions, 5121 flow [2022-01-19 07:12:45,473 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4417, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=5121, PETRI_PLACES=623, PETRI_TRANSITIONS=400} [2022-01-19 07:12:45,474 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 436 predicate places. [2022-01-19 07:12:45,474 INFO L470 AbstractCegarLoop]: Abstraction has has 623 places, 400 transitions, 5121 flow [2022-01-19 07:12:45,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:45,474 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:45,474 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:45,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable335 [2022-01-19 07:12:45,474 INFO L402 AbstractCegarLoop]: === Iteration 337 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:45,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:45,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1375996336, now seen corresponding path program 33 times [2022-01-19 07:12:45,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:45,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519267053] [2022-01-19 07:12:45,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:45,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:45,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:45,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:45,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519267053] [2022-01-19 07:12:45,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519267053] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:45,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:45,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:45,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657636642] [2022-01-19 07:12:45,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:45,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:45,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:45,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:45,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:45,576 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:45,577 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 623 places, 400 transitions, 5121 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:45,577 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:45,577 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:45,577 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:46,743 INFO L129 PetriNetUnfolder]: 527/2067 cut-off events. [2022-01-19 07:12:46,743 INFO L130 PetriNetUnfolder]: For 50205/50230 co-relation queries the response was YES. [2022-01-19 07:12:46,774 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15468 conditions, 2067 events. 527/2067 cut-off events. For 50205/50230 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 15100 event pairs, 203 based on Foata normal form. 7/2006 useless extension candidates. Maximal degree in co-relation 15176. Up to 487 conditions per place. [2022-01-19 07:12:46,781 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 231 selfloop transitions, 92 changer transitions 68/532 dead transitions. [2022-01-19 07:12:46,781 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 532 transitions, 9139 flow [2022-01-19 07:12:46,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 07:12:46,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 07:12:46,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5763 transitions. [2022-01-19 07:12:46,783 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7623015873015873 [2022-01-19 07:12:46,783 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5763 transitions. [2022-01-19 07:12:46,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5763 transitions. [2022-01-19 07:12:46,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:46,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5763 transitions. [2022-01-19 07:12:46,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.08333333333334) internal successors, (5763), 36 states have internal predecessors, (5763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:46,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:46,791 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:46,791 INFO L186 Difference]: Start difference. First operand has 623 places, 400 transitions, 5121 flow. Second operand 36 states and 5763 transitions. [2022-01-19 07:12:46,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 532 transitions, 9139 flow [2022-01-19 07:12:47,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 616 places, 532 transitions, 8710 flow, removed 171 selfloop flow, removed 19 redundant places. [2022-01-19 07:12:47,057 INFO L242 Difference]: Finished difference. Result has 641 places, 410 transitions, 5525 flow [2022-01-19 07:12:47,057 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4939, PETRI_DIFFERENCE_MINUEND_PLACES=581, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=5525, PETRI_PLACES=641, PETRI_TRANSITIONS=410} [2022-01-19 07:12:47,057 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 454 predicate places. [2022-01-19 07:12:47,058 INFO L470 AbstractCegarLoop]: Abstraction has has 641 places, 410 transitions, 5525 flow [2022-01-19 07:12:47,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:47,058 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:47,058 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:47,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable336 [2022-01-19 07:12:47,058 INFO L402 AbstractCegarLoop]: === Iteration 338 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:47,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:47,058 INFO L85 PathProgramCache]: Analyzing trace with hash -244700762, now seen corresponding path program 34 times [2022-01-19 07:12:47,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:47,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815090839] [2022-01-19 07:12:47,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:47,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:47,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:47,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:47,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815090839] [2022-01-19 07:12:47,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815090839] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:47,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:47,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:47,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769863181] [2022-01-19 07:12:47,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:47,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:47,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:47,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:47,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:47,169 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:47,170 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 641 places, 410 transitions, 5525 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:47,170 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:47,170 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:47,170 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:48,513 INFO L129 PetriNetUnfolder]: 568/2227 cut-off events. [2022-01-19 07:12:48,513 INFO L130 PetriNetUnfolder]: For 56685/56729 co-relation queries the response was YES. [2022-01-19 07:12:48,557 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16820 conditions, 2227 events. 568/2227 cut-off events. For 56685/56729 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 16774 event pairs, 198 based on Foata normal form. 9/2173 useless extension candidates. Maximal degree in co-relation 16520. Up to 489 conditions per place. [2022-01-19 07:12:48,564 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 257 selfloop transitions, 115 changer transitions 85/598 dead transitions. [2022-01-19 07:12:48,564 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 664 places, 598 transitions, 10656 flow [2022-01-19 07:12:48,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 07:12:48,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 07:12:48,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7340 transitions. [2022-01-19 07:12:48,567 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7598343685300207 [2022-01-19 07:12:48,567 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7340 transitions. [2022-01-19 07:12:48,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7340 transitions. [2022-01-19 07:12:48,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:48,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7340 transitions. [2022-01-19 07:12:48,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.56521739130434) internal successors, (7340), 46 states have internal predecessors, (7340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:48,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:48,576 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:48,576 INFO L186 Difference]: Start difference. First operand has 641 places, 410 transitions, 5525 flow. Second operand 46 states and 7340 transitions. [2022-01-19 07:12:48,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 664 places, 598 transitions, 10656 flow [2022-01-19 07:12:48,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 644 places, 598 transitions, 10133 flow, removed 160 selfloop flow, removed 20 redundant places. [2022-01-19 07:12:48,862 INFO L242 Difference]: Finished difference. Result has 677 places, 436 transitions, 6115 flow [2022-01-19 07:12:48,862 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5231, PETRI_DIFFERENCE_MINUEND_PLACES=599, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=6115, PETRI_PLACES=677, PETRI_TRANSITIONS=436} [2022-01-19 07:12:48,862 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 490 predicate places. [2022-01-19 07:12:48,862 INFO L470 AbstractCegarLoop]: Abstraction has has 677 places, 436 transitions, 6115 flow [2022-01-19 07:12:48,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:48,862 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:48,862 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:48,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable337 [2022-01-19 07:12:48,863 INFO L402 AbstractCegarLoop]: === Iteration 339 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:48,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:48,863 INFO L85 PathProgramCache]: Analyzing trace with hash -971988702, now seen corresponding path program 35 times [2022-01-19 07:12:48,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:48,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137099841] [2022-01-19 07:12:48,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:48,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:48,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:48,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:48,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:48,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137099841] [2022-01-19 07:12:48,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137099841] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:48,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:48,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:48,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808066827] [2022-01-19 07:12:48,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:48,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:48,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:48,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:48,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:48,970 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:48,971 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 677 places, 436 transitions, 6115 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:48,971 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:48,971 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:48,971 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:50,261 INFO L129 PetriNetUnfolder]: 582/2270 cut-off events. [2022-01-19 07:12:50,261 INFO L130 PetriNetUnfolder]: For 58515/58553 co-relation queries the response was YES. [2022-01-19 07:12:50,312 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17373 conditions, 2270 events. 582/2270 cut-off events. For 58515/58553 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 17279 event pairs, 228 based on Foata normal form. 9/2207 useless extension candidates. Maximal degree in co-relation 17058. Up to 510 conditions per place. [2022-01-19 07:12:50,322 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 242 selfloop transitions, 127 changer transitions 82/592 dead transitions. [2022-01-19 07:12:50,322 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 688 places, 592 transitions, 10564 flow [2022-01-19 07:12:50,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 07:12:50,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 07:12:50,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7186 transitions. [2022-01-19 07:12:50,325 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7604232804232804 [2022-01-19 07:12:50,325 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7186 transitions. [2022-01-19 07:12:50,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7186 transitions. [2022-01-19 07:12:50,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:50,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7186 transitions. [2022-01-19 07:12:50,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.6888888888889) internal successors, (7186), 45 states have internal predecessors, (7186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:50,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:50,334 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:50,334 INFO L186 Difference]: Start difference. First operand has 677 places, 436 transitions, 6115 flow. Second operand 45 states and 7186 transitions. [2022-01-19 07:12:50,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 688 places, 592 transitions, 10564 flow [2022-01-19 07:12:50,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 660 places, 592 transitions, 10176 flow, removed 159 selfloop flow, removed 28 redundant places. [2022-01-19 07:12:50,713 INFO L242 Difference]: Finished difference. Result has 694 places, 453 transitions, 6709 flow [2022-01-19 07:12:50,713 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5934, PETRI_DIFFERENCE_MINUEND_PLACES=616, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=6709, PETRI_PLACES=694, PETRI_TRANSITIONS=453} [2022-01-19 07:12:50,714 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 507 predicate places. [2022-01-19 07:12:50,714 INFO L470 AbstractCegarLoop]: Abstraction has has 694 places, 453 transitions, 6709 flow [2022-01-19 07:12:50,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:50,714 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:50,714 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:50,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable338 [2022-01-19 07:12:50,714 INFO L402 AbstractCegarLoop]: === Iteration 340 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:50,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:50,714 INFO L85 PathProgramCache]: Analyzing trace with hash -395274568, now seen corresponding path program 36 times [2022-01-19 07:12:50,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:50,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686901975] [2022-01-19 07:12:50,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:50,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:50,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:50,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:50,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686901975] [2022-01-19 07:12:50,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686901975] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:50,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:50,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:50,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243720841] [2022-01-19 07:12:50,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:50,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:50,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:50,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:50,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:50,814 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:50,815 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 694 places, 453 transitions, 6709 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:50,815 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:50,815 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:50,815 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:52,093 INFO L129 PetriNetUnfolder]: 576/2217 cut-off events. [2022-01-19 07:12:52,093 INFO L130 PetriNetUnfolder]: For 61790/61828 co-relation queries the response was YES. [2022-01-19 07:12:52,133 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17432 conditions, 2217 events. 576/2217 cut-off events. For 61790/61828 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 16644 event pairs, 202 based on Foata normal form. 9/2157 useless extension candidates. Maximal degree in co-relation 17109. Up to 506 conditions per place. [2022-01-19 07:12:52,140 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 265 selfloop transitions, 121 changer transitions 94/621 dead transitions. [2022-01-19 07:12:52,140 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 705 places, 621 transitions, 11724 flow [2022-01-19 07:12:52,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-19 07:12:52,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-01-19 07:12:52,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7025 transitions. [2022-01-19 07:12:52,143 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7602813852813853 [2022-01-19 07:12:52,143 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7025 transitions. [2022-01-19 07:12:52,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7025 transitions. [2022-01-19 07:12:52,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:52,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7025 transitions. [2022-01-19 07:12:52,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.6590909090909) internal successors, (7025), 44 states have internal predecessors, (7025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:52,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:52,152 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:52,152 INFO L186 Difference]: Start difference. First operand has 694 places, 453 transitions, 6709 flow. Second operand 44 states and 7025 transitions. [2022-01-19 07:12:52,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 705 places, 621 transitions, 11724 flow [2022-01-19 07:12:52,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 674 places, 621 transitions, 11244 flow, removed 175 selfloop flow, removed 31 redundant places. [2022-01-19 07:12:52,504 INFO L242 Difference]: Finished difference. Result has 707 places, 461 transitions, 7109 flow [2022-01-19 07:12:52,504 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6424, PETRI_DIFFERENCE_MINUEND_PLACES=631, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=7109, PETRI_PLACES=707, PETRI_TRANSITIONS=461} [2022-01-19 07:12:52,504 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 520 predicate places. [2022-01-19 07:12:52,504 INFO L470 AbstractCegarLoop]: Abstraction has has 707 places, 461 transitions, 7109 flow [2022-01-19 07:12:52,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:52,504 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:52,504 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:52,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable339 [2022-01-19 07:12:52,505 INFO L402 AbstractCegarLoop]: === Iteration 341 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:52,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:52,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1497482432, now seen corresponding path program 37 times [2022-01-19 07:12:52,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:52,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378305745] [2022-01-19 07:12:52,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:52,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:52,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:52,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:52,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378305745] [2022-01-19 07:12:52,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378305745] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:52,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:52,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:52,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549931135] [2022-01-19 07:12:52,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:52,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:52,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:52,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:52,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:52,608 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:52,609 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 707 places, 461 transitions, 7109 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:52,609 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:52,609 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:52,609 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:53,820 INFO L129 PetriNetUnfolder]: 594/2282 cut-off events. [2022-01-19 07:12:53,821 INFO L130 PetriNetUnfolder]: For 62442/62467 co-relation queries the response was YES. [2022-01-19 07:12:53,882 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17973 conditions, 2282 events. 594/2282 cut-off events. For 62442/62467 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 17380 event pairs, 225 based on Foata normal form. 5/2212 useless extension candidates. Maximal degree in co-relation 17645. Up to 527 conditions per place. [2022-01-19 07:12:53,890 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 251 selfloop transitions, 138 changer transitions 70/600 dead transitions. [2022-01-19 07:12:53,890 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 713 places, 600 transitions, 11146 flow [2022-01-19 07:12:53,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:12:53,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:12:53,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6084 transitions. [2022-01-19 07:12:53,893 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.762406015037594 [2022-01-19 07:12:53,893 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6084 transitions. [2022-01-19 07:12:53,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6084 transitions. [2022-01-19 07:12:53,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:53,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6084 transitions. [2022-01-19 07:12:53,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.10526315789474) internal successors, (6084), 38 states have internal predecessors, (6084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:53,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:53,901 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:53,901 INFO L186 Difference]: Start difference. First operand has 707 places, 461 transitions, 7109 flow. Second operand 38 states and 6084 transitions. [2022-01-19 07:12:53,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 713 places, 600 transitions, 11146 flow [2022-01-19 07:12:54,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 677 places, 600 transitions, 10573 flow, removed 162 selfloop flow, removed 36 redundant places. [2022-01-19 07:12:54,287 INFO L242 Difference]: Finished difference. Result has 700 places, 481 transitions, 7558 flow [2022-01-19 07:12:54,287 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6693, PETRI_DIFFERENCE_MINUEND_PLACES=640, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=7558, PETRI_PLACES=700, PETRI_TRANSITIONS=481} [2022-01-19 07:12:54,287 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 513 predicate places. [2022-01-19 07:12:54,287 INFO L470 AbstractCegarLoop]: Abstraction has has 700 places, 481 transitions, 7558 flow [2022-01-19 07:12:54,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:54,287 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:54,288 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:54,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340 [2022-01-19 07:12:54,288 INFO L402 AbstractCegarLoop]: === Iteration 342 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:54,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:54,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1649841138, now seen corresponding path program 38 times [2022-01-19 07:12:54,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:54,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797603534] [2022-01-19 07:12:54,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:54,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:54,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:54,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:54,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797603534] [2022-01-19 07:12:54,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797603534] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:54,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:54,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:54,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488289245] [2022-01-19 07:12:54,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:54,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:54,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:54,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:54,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:54,387 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:54,387 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 700 places, 481 transitions, 7558 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:54,387 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:54,388 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:54,388 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:55,550 INFO L129 PetriNetUnfolder]: 588/2262 cut-off events. [2022-01-19 07:12:55,550 INFO L130 PetriNetUnfolder]: For 59756/59794 co-relation queries the response was YES. [2022-01-19 07:12:55,608 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17678 conditions, 2262 events. 588/2262 cut-off events. For 59756/59794 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 17183 event pairs, 221 based on Foata normal form. 9/2197 useless extension candidates. Maximal degree in co-relation 17359. Up to 523 conditions per place. [2022-01-19 07:12:55,615 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 253 selfloop transitions, 139 changer transitions 72/605 dead transitions. [2022-01-19 07:12:55,615 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 712 places, 605 transitions, 11325 flow [2022-01-19 07:12:55,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 07:12:55,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 07:12:55,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5924 transitions. [2022-01-19 07:12:55,618 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7624195624195624 [2022-01-19 07:12:55,618 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5924 transitions. [2022-01-19 07:12:55,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5924 transitions. [2022-01-19 07:12:55,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:55,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5924 transitions. [2022-01-19 07:12:55,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.1081081081081) internal successors, (5924), 37 states have internal predecessors, (5924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:55,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:55,625 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:55,625 INFO L186 Difference]: Start difference. First operand has 700 places, 481 transitions, 7558 flow. Second operand 37 states and 5924 transitions. [2022-01-19 07:12:55,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 712 places, 605 transitions, 11325 flow [2022-01-19 07:12:55,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 693 places, 605 transitions, 10954 flow, removed 126 selfloop flow, removed 19 redundant places. [2022-01-19 07:12:55,998 INFO L242 Difference]: Finished difference. Result has 717 places, 486 transitions, 7891 flow [2022-01-19 07:12:55,998 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7328, PETRI_DIFFERENCE_MINUEND_PLACES=657, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=7891, PETRI_PLACES=717, PETRI_TRANSITIONS=486} [2022-01-19 07:12:55,998 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 530 predicate places. [2022-01-19 07:12:55,998 INFO L470 AbstractCegarLoop]: Abstraction has has 717 places, 486 transitions, 7891 flow [2022-01-19 07:12:55,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:55,998 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:55,998 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:55,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341 [2022-01-19 07:12:55,999 INFO L402 AbstractCegarLoop]: === Iteration 343 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:55,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:55,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1647068248, now seen corresponding path program 39 times [2022-01-19 07:12:55,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:55,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177601666] [2022-01-19 07:12:55,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:55,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:56,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:56,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:56,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177601666] [2022-01-19 07:12:56,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177601666] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:56,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:56,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:56,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398834011] [2022-01-19 07:12:56,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:56,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:56,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:56,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:56,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:56,098 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:56,099 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 717 places, 486 transitions, 7891 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:56,099 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:56,099 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:56,099 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:57,325 INFO L129 PetriNetUnfolder]: 584/2295 cut-off events. [2022-01-19 07:12:57,325 INFO L130 PetriNetUnfolder]: For 61157/61199 co-relation queries the response was YES. [2022-01-19 07:12:57,368 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17851 conditions, 2295 events. 584/2295 cut-off events. For 61157/61199 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 17538 event pairs, 203 based on Foata normal form. 9/2241 useless extension candidates. Maximal degree in co-relation 17524. Up to 519 conditions per place. [2022-01-19 07:12:57,375 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 275 selfloop transitions, 135 changer transitions 76/627 dead transitions. [2022-01-19 07:12:57,375 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 731 places, 627 transitions, 12222 flow [2022-01-19 07:12:57,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:12:57,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:12:57,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6078 transitions. [2022-01-19 07:12:57,378 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616541353383459 [2022-01-19 07:12:57,378 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6078 transitions. [2022-01-19 07:12:57,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6078 transitions. [2022-01-19 07:12:57,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:57,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6078 transitions. [2022-01-19 07:12:57,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.94736842105263) internal successors, (6078), 38 states have internal predecessors, (6078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:57,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:57,386 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:57,386 INFO L186 Difference]: Start difference. First operand has 717 places, 486 transitions, 7891 flow. Second operand 38 states and 6078 transitions. [2022-01-19 07:12:57,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 731 places, 627 transitions, 12222 flow [2022-01-19 07:12:57,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 709 places, 627 transitions, 11819 flow, removed 123 selfloop flow, removed 22 redundant places. [2022-01-19 07:12:57,818 INFO L242 Difference]: Finished difference. Result has 732 places, 491 transitions, 8175 flow [2022-01-19 07:12:57,819 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7630, PETRI_DIFFERENCE_MINUEND_PLACES=672, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8175, PETRI_PLACES=732, PETRI_TRANSITIONS=491} [2022-01-19 07:12:57,819 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 545 predicate places. [2022-01-19 07:12:57,819 INFO L470 AbstractCegarLoop]: Abstraction has has 732 places, 491 transitions, 8175 flow [2022-01-19 07:12:57,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:57,819 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:57,819 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:57,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable342 [2022-01-19 07:12:57,819 INFO L402 AbstractCegarLoop]: === Iteration 344 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:57,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:57,820 INFO L85 PathProgramCache]: Analyzing trace with hash -280414778, now seen corresponding path program 40 times [2022-01-19 07:12:57,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:57,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920275518] [2022-01-19 07:12:57,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:57,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:57,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:57,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:57,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:57,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920275518] [2022-01-19 07:12:57,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920275518] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:57,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:57,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:57,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007871327] [2022-01-19 07:12:57,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:57,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:57,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:57,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:57,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:57,915 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:57,916 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 732 places, 491 transitions, 8175 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:57,916 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:57,916 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:57,916 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:12:59,117 INFO L129 PetriNetUnfolder]: 593/2298 cut-off events. [2022-01-19 07:12:59,117 INFO L130 PetriNetUnfolder]: For 62620/62643 co-relation queries the response was YES. [2022-01-19 07:12:59,188 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18112 conditions, 2298 events. 593/2298 cut-off events. For 62620/62643 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 17516 event pairs, 219 based on Foata normal form. 5/2234 useless extension candidates. Maximal degree in co-relation 17780. Up to 532 conditions per place. [2022-01-19 07:12:59,196 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 268 selfloop transitions, 146 changer transitions 77/632 dead transitions. [2022-01-19 07:12:59,197 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 743 places, 632 transitions, 12490 flow [2022-01-19 07:12:59,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 07:12:59,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 07:12:59,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5763 transitions. [2022-01-19 07:12:59,200 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7623015873015873 [2022-01-19 07:12:59,200 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5763 transitions. [2022-01-19 07:12:59,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5763 transitions. [2022-01-19 07:12:59,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:12:59,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5763 transitions. [2022-01-19 07:12:59,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.08333333333334) internal successors, (5763), 36 states have internal predecessors, (5763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:59,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:59,210 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:59,210 INFO L186 Difference]: Start difference. First operand has 732 places, 491 transitions, 8175 flow. Second operand 36 states and 5763 transitions. [2022-01-19 07:12:59,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 743 places, 632 transitions, 12490 flow [2022-01-19 07:12:59,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 721 places, 632 transitions, 12136 flow, removed 110 selfloop flow, removed 22 redundant places. [2022-01-19 07:12:59,636 INFO L242 Difference]: Finished difference. Result has 744 places, 507 transitions, 8749 flow [2022-01-19 07:12:59,636 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7915, PETRI_DIFFERENCE_MINUEND_PLACES=686, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=8749, PETRI_PLACES=744, PETRI_TRANSITIONS=507} [2022-01-19 07:12:59,637 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 557 predicate places. [2022-01-19 07:12:59,637 INFO L470 AbstractCegarLoop]: Abstraction has has 744 places, 507 transitions, 8749 flow [2022-01-19 07:12:59,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:59,637 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:12:59,637 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:12:59,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable343 [2022-01-19 07:12:59,637 INFO L402 AbstractCegarLoop]: === Iteration 345 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:12:59,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:12:59,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1947638806, now seen corresponding path program 41 times [2022-01-19 07:12:59,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:12:59,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087363453] [2022-01-19 07:12:59,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:12:59,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:12:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:12:59,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:12:59,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:12:59,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087363453] [2022-01-19 07:12:59,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087363453] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:12:59,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:12:59,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:12:59,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467349312] [2022-01-19 07:12:59,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:12:59,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:12:59,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:12:59,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:12:59,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:12:59,747 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:12:59,748 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 744 places, 507 transitions, 8749 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:12:59,748 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:12:59,748 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:12:59,748 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:13:01,042 INFO L129 PetriNetUnfolder]: 618/2373 cut-off events. [2022-01-19 07:13:01,042 INFO L130 PetriNetUnfolder]: For 67780/67805 co-relation queries the response was YES. [2022-01-19 07:13:01,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19021 conditions, 2373 events. 618/2373 cut-off events. For 67780/67805 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 18336 event pairs, 219 based on Foata normal form. 5/2309 useless extension candidates. Maximal degree in co-relation 18685. Up to 545 conditions per place. [2022-01-19 07:13:01,118 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 294 selfloop transitions, 145 changer transitions 73/653 dead transitions. [2022-01-19 07:13:01,118 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 759 places, 653 transitions, 13313 flow [2022-01-19 07:13:01,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:13:01,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:13:01,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6080 transitions. [2022-01-19 07:13:01,121 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2022-01-19 07:13:01,121 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6080 transitions. [2022-01-19 07:13:01,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6080 transitions. [2022-01-19 07:13:01,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:13:01,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6080 transitions. [2022-01-19 07:13:01,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.0) internal successors, (6080), 38 states have internal predecessors, (6080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:01,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:01,128 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:01,128 INFO L186 Difference]: Start difference. First operand has 744 places, 507 transitions, 8749 flow. Second operand 38 states and 6080 transitions. [2022-01-19 07:13:01,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 759 places, 653 transitions, 13313 flow [2022-01-19 07:13:01,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 735 places, 653 transitions, 12776 flow, removed 135 selfloop flow, removed 24 redundant places. [2022-01-19 07:13:01,653 INFO L242 Difference]: Finished difference. Result has 758 places, 527 transitions, 9333 flow [2022-01-19 07:13:01,653 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8366, PETRI_DIFFERENCE_MINUEND_PLACES=698, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9333, PETRI_PLACES=758, PETRI_TRANSITIONS=527} [2022-01-19 07:13:01,654 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 571 predicate places. [2022-01-19 07:13:01,654 INFO L470 AbstractCegarLoop]: Abstraction has has 758 places, 527 transitions, 9333 flow [2022-01-19 07:13:01,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:01,654 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:13:01,654 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:13:01,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable344 [2022-01-19 07:13:01,654 INFO L402 AbstractCegarLoop]: === Iteration 346 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:13:01,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:13:01,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1834953644, now seen corresponding path program 42 times [2022-01-19 07:13:01,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:13:01,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532712030] [2022-01-19 07:13:01,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:13:01,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:13:01,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:13:01,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:13:01,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:13:01,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532712030] [2022-01-19 07:13:01,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532712030] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:13:01,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:13:01,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:13:01,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394752025] [2022-01-19 07:13:01,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:13:01,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:13:01,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:13:01,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:13:01,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:13:01,758 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:13:01,759 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 758 places, 527 transitions, 9333 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:01,759 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:13:01,759 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:13:01,759 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:13:03,134 INFO L129 PetriNetUnfolder]: 612/2362 cut-off events. [2022-01-19 07:13:03,134 INFO L130 PetriNetUnfolder]: For 66628/66651 co-relation queries the response was YES. [2022-01-19 07:13:03,186 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18910 conditions, 2362 events. 612/2362 cut-off events. For 66628/66651 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 18238 event pairs, 219 based on Foata normal form. 5/2298 useless extension candidates. Maximal degree in co-relation 18570. Up to 541 conditions per place. [2022-01-19 07:13:03,196 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 291 selfloop transitions, 143 changer transitions 72/647 dead transitions. [2022-01-19 07:13:03,196 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 770 places, 647 transitions, 13275 flow [2022-01-19 07:13:03,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 07:13:03,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 07:13:03,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5926 transitions. [2022-01-19 07:13:03,198 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7626769626769627 [2022-01-19 07:13:03,198 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5926 transitions. [2022-01-19 07:13:03,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5926 transitions. [2022-01-19 07:13:03,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:13:03,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5926 transitions. [2022-01-19 07:13:03,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.16216216216216) internal successors, (5926), 37 states have internal predecessors, (5926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:03,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:03,206 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:03,206 INFO L186 Difference]: Start difference. First operand has 758 places, 527 transitions, 9333 flow. Second operand 37 states and 5926 transitions. [2022-01-19 07:13:03,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 770 places, 647 transitions, 13275 flow [2022-01-19 07:13:03,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 751 places, 647 transitions, 12878 flow, removed 139 selfloop flow, removed 19 redundant places. [2022-01-19 07:13:03,696 INFO L242 Difference]: Finished difference. Result has 774 places, 530 transitions, 9590 flow [2022-01-19 07:13:03,696 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9083, PETRI_DIFFERENCE_MINUEND_PLACES=715, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=9590, PETRI_PLACES=774, PETRI_TRANSITIONS=530} [2022-01-19 07:13:03,696 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 587 predicate places. [2022-01-19 07:13:03,696 INFO L470 AbstractCegarLoop]: Abstraction has has 774 places, 530 transitions, 9590 flow [2022-01-19 07:13:03,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:03,697 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:13:03,697 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:13:03,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable345 [2022-01-19 07:13:03,697 INFO L402 AbstractCegarLoop]: === Iteration 347 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:13:03,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:13:03,697 INFO L85 PathProgramCache]: Analyzing trace with hash 350111498, now seen corresponding path program 43 times [2022-01-19 07:13:03,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:13:03,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496255570] [2022-01-19 07:13:03,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:13:03,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:13:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:13:03,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:13:03,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:13:03,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496255570] [2022-01-19 07:13:03,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496255570] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:13:03,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:13:03,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:13:03,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460404189] [2022-01-19 07:13:03,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:13:03,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:13:03,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:13:03,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:13:03,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:13:03,793 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:13:03,793 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 774 places, 530 transitions, 9590 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:03,793 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:13:03,793 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:13:03,794 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:13:04,951 INFO L129 PetriNetUnfolder]: 616/2376 cut-off events. [2022-01-19 07:13:04,951 INFO L130 PetriNetUnfolder]: For 67928/67951 co-relation queries the response was YES. [2022-01-19 07:13:05,016 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19155 conditions, 2376 events. 616/2376 cut-off events. For 67928/67951 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 18383 event pairs, 224 based on Foata normal form. 5/2312 useless extension candidates. Maximal degree in co-relation 18808. Up to 555 conditions per place. [2022-01-19 07:13:05,025 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 273 selfloop transitions, 165 changer transitions 62/641 dead transitions. [2022-01-19 07:13:05,025 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 780 places, 641 transitions, 13200 flow [2022-01-19 07:13:05,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:13:05,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:13:05,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4816 transitions. [2022-01-19 07:13:05,027 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7644444444444445 [2022-01-19 07:13:05,027 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4816 transitions. [2022-01-19 07:13:05,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4816 transitions. [2022-01-19 07:13:05,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:13:05,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4816 transitions. [2022-01-19 07:13:05,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.53333333333333) internal successors, (4816), 30 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:05,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:05,033 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:05,033 INFO L186 Difference]: Start difference. First operand has 774 places, 530 transitions, 9590 flow. Second operand 30 states and 4816 transitions. [2022-01-19 07:13:05,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 780 places, 641 transitions, 13200 flow [2022-01-19 07:13:05,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 753 places, 641 transitions, 12742 flow, removed 113 selfloop flow, removed 27 redundant places. [2022-01-19 07:13:05,541 INFO L242 Difference]: Finished difference. Result has 766 places, 543 transitions, 9979 flow [2022-01-19 07:13:05,541 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9225, PETRI_DIFFERENCE_MINUEND_PLACES=724, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=9979, PETRI_PLACES=766, PETRI_TRANSITIONS=543} [2022-01-19 07:13:05,542 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 579 predicate places. [2022-01-19 07:13:05,542 INFO L470 AbstractCegarLoop]: Abstraction has has 766 places, 543 transitions, 9979 flow [2022-01-19 07:13:05,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:05,542 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:13:05,542 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:13:05,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable346 [2022-01-19 07:13:05,542 INFO L402 AbstractCegarLoop]: === Iteration 348 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:13:05,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:13:05,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1683532140, now seen corresponding path program 44 times [2022-01-19 07:13:05,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:13:05,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925459715] [2022-01-19 07:13:05,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:13:05,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:13:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:13:05,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:13:05,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:13:05,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925459715] [2022-01-19 07:13:05,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925459715] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:13:05,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:13:05,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:13:05,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266855518] [2022-01-19 07:13:05,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:13:05,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:13:05,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:13:05,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:13:05,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:13:05,642 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:13:05,642 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 766 places, 543 transitions, 9979 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:05,642 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:13:05,642 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:13:05,642 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:13:06,798 INFO L129 PetriNetUnfolder]: 618/2403 cut-off events. [2022-01-19 07:13:06,798 INFO L130 PetriNetUnfolder]: For 66402/66425 co-relation queries the response was YES. [2022-01-19 07:13:06,854 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19241 conditions, 2403 events. 618/2403 cut-off events. For 66402/66425 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 18694 event pairs, 232 based on Foata normal form. 5/2338 useless extension candidates. Maximal degree in co-relation 18904. Up to 560 conditions per place. [2022-01-19 07:13:06,863 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 273 selfloop transitions, 169 changer transitions 61/644 dead transitions. [2022-01-19 07:13:06,863 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 779 places, 644 transitions, 13386 flow [2022-01-19 07:13:06,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:13:06,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:13:06,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4662 transitions. [2022-01-19 07:13:06,865 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655172413793103 [2022-01-19 07:13:06,865 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4662 transitions. [2022-01-19 07:13:06,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4662 transitions. [2022-01-19 07:13:06,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:13:06,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4662 transitions. [2022-01-19 07:13:06,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.75862068965517) internal successors, (4662), 29 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:06,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:06,871 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:06,871 INFO L186 Difference]: Start difference. First operand has 766 places, 543 transitions, 9979 flow. Second operand 29 states and 4662 transitions. [2022-01-19 07:13:06,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 779 places, 644 transitions, 13386 flow [2022-01-19 07:13:07,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 767 places, 644 transitions, 13054 flow, removed 70 selfloop flow, removed 12 redundant places. [2022-01-19 07:13:07,384 INFO L242 Difference]: Finished difference. Result has 780 places, 550 transitions, 10316 flow [2022-01-19 07:13:07,384 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9710, PETRI_DIFFERENCE_MINUEND_PLACES=739, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=10316, PETRI_PLACES=780, PETRI_TRANSITIONS=550} [2022-01-19 07:13:07,385 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 593 predicate places. [2022-01-19 07:13:07,385 INFO L470 AbstractCegarLoop]: Abstraction has has 780 places, 550 transitions, 10316 flow [2022-01-19 07:13:07,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:07,385 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:13:07,385 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:13:07,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable347 [2022-01-19 07:13:07,385 INFO L402 AbstractCegarLoop]: === Iteration 349 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:13:07,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:13:07,386 INFO L85 PathProgramCache]: Analyzing trace with hash -2088876890, now seen corresponding path program 45 times [2022-01-19 07:13:07,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:13:07,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442132297] [2022-01-19 07:13:07,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:13:07,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:13:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:13:07,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:13:07,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:13:07,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442132297] [2022-01-19 07:13:07,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442132297] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:13:07,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:13:07,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:13:07,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511374712] [2022-01-19 07:13:07,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:13:07,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:13:07,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:13:07,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:13:07,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:13:07,486 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:13:07,487 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 780 places, 550 transitions, 10316 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:07,487 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:13:07,487 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:13:07,487 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:13:08,640 INFO L129 PetriNetUnfolder]: 611/2390 cut-off events. [2022-01-19 07:13:08,640 INFO L130 PetriNetUnfolder]: For 68306/68344 co-relation queries the response was YES. [2022-01-19 07:13:08,704 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19187 conditions, 2390 events. 611/2390 cut-off events. For 68306/68344 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 18533 event pairs, 210 based on Foata normal form. 9/2336 useless extension candidates. Maximal degree in co-relation 18845. Up to 559 conditions per place. [2022-01-19 07:13:08,713 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 297 selfloop transitions, 158 changer transitions 65/661 dead transitions. [2022-01-19 07:13:08,714 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 795 places, 661 transitions, 13933 flow [2022-01-19 07:13:08,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:13:08,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:13:08,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4816 transitions. [2022-01-19 07:13:08,716 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7644444444444445 [2022-01-19 07:13:08,716 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4816 transitions. [2022-01-19 07:13:08,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4816 transitions. [2022-01-19 07:13:08,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:13:08,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4816 transitions. [2022-01-19 07:13:08,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.53333333333333) internal successors, (4816), 30 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:08,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:08,722 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:08,722 INFO L186 Difference]: Start difference. First operand has 780 places, 550 transitions, 10316 flow. Second operand 30 states and 4816 transitions. [2022-01-19 07:13:08,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 795 places, 661 transitions, 13933 flow [2022-01-19 07:13:09,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 781 places, 661 transitions, 13560 flow, removed 77 selfloop flow, removed 14 redundant places. [2022-01-19 07:13:09,263 INFO L242 Difference]: Finished difference. Result has 794 places, 556 transitions, 10542 flow [2022-01-19 07:13:09,263 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10003, PETRI_DIFFERENCE_MINUEND_PLACES=752, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=10542, PETRI_PLACES=794, PETRI_TRANSITIONS=556} [2022-01-19 07:13:09,264 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 607 predicate places. [2022-01-19 07:13:09,264 INFO L470 AbstractCegarLoop]: Abstraction has has 794 places, 556 transitions, 10542 flow [2022-01-19 07:13:09,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:09,264 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:13:09,264 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:13:09,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable348 [2022-01-19 07:13:09,264 INFO L402 AbstractCegarLoop]: === Iteration 350 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:13:09,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:13:09,264 INFO L85 PathProgramCache]: Analyzing trace with hash -2068456834, now seen corresponding path program 46 times [2022-01-19 07:13:09,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:13:09,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787373407] [2022-01-19 07:13:09,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:13:09,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:13:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:13:09,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:13:09,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:13:09,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787373407] [2022-01-19 07:13:09,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787373407] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:13:09,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:13:09,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:13:09,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860214289] [2022-01-19 07:13:09,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:13:09,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:13:09,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:13:09,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:13:09,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:13:09,370 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:13:09,371 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 794 places, 556 transitions, 10542 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:09,371 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:13:09,371 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:13:09,371 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:13:10,579 INFO L129 PetriNetUnfolder]: 603/2363 cut-off events. [2022-01-19 07:13:10,579 INFO L130 PetriNetUnfolder]: For 69987/70010 co-relation queries the response was YES. [2022-01-19 07:13:10,642 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19114 conditions, 2363 events. 603/2363 cut-off events. For 69987/70010 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 18326 event pairs, 211 based on Foata normal form. 5/2302 useless extension candidates. Maximal degree in co-relation 18768. Up to 556 conditions per place. [2022-01-19 07:13:10,650 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 310 selfloop transitions, 146 changer transitions 61/658 dead transitions. [2022-01-19 07:13:10,650 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 808 places, 658 transitions, 14020 flow [2022-01-19 07:13:10,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:13:10,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:13:10,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4822 transitions. [2022-01-19 07:13:10,653 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7653968253968254 [2022-01-19 07:13:10,653 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4822 transitions. [2022-01-19 07:13:10,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4822 transitions. [2022-01-19 07:13:10,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:13:10,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4822 transitions. [2022-01-19 07:13:10,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.73333333333332) internal successors, (4822), 30 states have internal predecessors, (4822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:10,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:10,659 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:10,659 INFO L186 Difference]: Start difference. First operand has 794 places, 556 transitions, 10542 flow. Second operand 30 states and 4822 transitions. [2022-01-19 07:13:10,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 808 places, 658 transitions, 14020 flow [2022-01-19 07:13:11,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 794 places, 658 transitions, 13700 flow, removed 93 selfloop flow, removed 14 redundant places. [2022-01-19 07:13:11,170 INFO L242 Difference]: Finished difference. Result has 808 places, 561 transitions, 10793 flow [2022-01-19 07:13:11,171 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10291, PETRI_DIFFERENCE_MINUEND_PLACES=765, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=10793, PETRI_PLACES=808, PETRI_TRANSITIONS=561} [2022-01-19 07:13:11,171 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 621 predicate places. [2022-01-19 07:13:11,171 INFO L470 AbstractCegarLoop]: Abstraction has has 808 places, 561 transitions, 10793 flow [2022-01-19 07:13:11,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:11,171 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:13:11,171 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:13:11,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable349 [2022-01-19 07:13:11,172 INFO L402 AbstractCegarLoop]: === Iteration 351 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:13:11,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:13:11,172 INFO L85 PathProgramCache]: Analyzing trace with hash 261935310, now seen corresponding path program 47 times [2022-01-19 07:13:11,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:13:11,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121029989] [2022-01-19 07:13:11,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:13:11,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:13:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:13:11,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:13:11,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:13:11,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121029989] [2022-01-19 07:13:11,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121029989] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:13:11,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:13:11,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:13:11,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630193285] [2022-01-19 07:13:11,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:13:11,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:13:11,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:13:11,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:13:11,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:13:11,290 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:13:11,291 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 808 places, 561 transitions, 10793 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:11,291 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:13:11,291 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:13:11,291 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:13:12,510 INFO L129 PetriNetUnfolder]: 612/2394 cut-off events. [2022-01-19 07:13:12,510 INFO L130 PetriNetUnfolder]: For 72087/72125 co-relation queries the response was YES. [2022-01-19 07:13:12,670 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19511 conditions, 2394 events. 612/2394 cut-off events. For 72087/72125 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 18549 event pairs, 217 based on Foata normal form. 9/2337 useless extension candidates. Maximal degree in co-relation 19161. Up to 561 conditions per place. [2022-01-19 07:13:12,679 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 303 selfloop transitions, 164 changer transitions 61/669 dead transitions. [2022-01-19 07:13:12,679 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 821 places, 669 transitions, 14553 flow [2022-01-19 07:13:12,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:13:12,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:13:12,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4662 transitions. [2022-01-19 07:13:12,681 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655172413793103 [2022-01-19 07:13:12,681 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4662 transitions. [2022-01-19 07:13:12,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4662 transitions. [2022-01-19 07:13:12,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:13:12,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4662 transitions. [2022-01-19 07:13:12,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.75862068965517) internal successors, (4662), 29 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:12,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:12,687 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:12,687 INFO L186 Difference]: Start difference. First operand has 808 places, 561 transitions, 10793 flow. Second operand 29 states and 4662 transitions. [2022-01-19 07:13:12,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 821 places, 669 transitions, 14553 flow [2022-01-19 07:13:13,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 807 places, 669 transitions, 14170 flow, removed 114 selfloop flow, removed 14 redundant places. [2022-01-19 07:13:13,211 INFO L242 Difference]: Finished difference. Result has 821 places, 573 transitions, 11276 flow [2022-01-19 07:13:13,211 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10507, PETRI_DIFFERENCE_MINUEND_PLACES=779, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=11276, PETRI_PLACES=821, PETRI_TRANSITIONS=573} [2022-01-19 07:13:13,211 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 634 predicate places. [2022-01-19 07:13:13,211 INFO L470 AbstractCegarLoop]: Abstraction has has 821 places, 573 transitions, 11276 flow [2022-01-19 07:13:13,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:13,212 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:13:13,212 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:13:13,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350 [2022-01-19 07:13:13,212 INFO L402 AbstractCegarLoop]: === Iteration 352 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:13:13,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:13:13,212 INFO L85 PathProgramCache]: Analyzing trace with hash 21764622, now seen corresponding path program 48 times [2022-01-19 07:13:13,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:13:13,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478044391] [2022-01-19 07:13:13,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:13:13,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:13:13,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:13:13,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:13:13,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:13:13,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478044391] [2022-01-19 07:13:13,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478044391] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:13:13,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:13:13,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:13:13,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779172476] [2022-01-19 07:13:13,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:13:13,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:13:13,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:13:13,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:13:13,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:13:13,306 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:13:13,306 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 821 places, 573 transitions, 11276 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:13,306 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:13:13,306 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:13:13,306 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:13:14,517 INFO L129 PetriNetUnfolder]: 606/2382 cut-off events. [2022-01-19 07:13:14,517 INFO L130 PetriNetUnfolder]: For 73241/73264 co-relation queries the response was YES. [2022-01-19 07:13:14,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19471 conditions, 2382 events. 606/2382 cut-off events. For 73241/73264 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 18461 event pairs, 201 based on Foata normal form. 5/2324 useless extension candidates. Maximal degree in co-relation 19117. Up to 563 conditions per place. [2022-01-19 07:13:14,582 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 289 selfloop transitions, 186 changer transitions 64/680 dead transitions. [2022-01-19 07:13:14,582 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 836 places, 680 transitions, 15081 flow [2022-01-19 07:13:14,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:13:14,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:13:14,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4812 transitions. [2022-01-19 07:13:14,584 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7638095238095238 [2022-01-19 07:13:14,584 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4812 transitions. [2022-01-19 07:13:14,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4812 transitions. [2022-01-19 07:13:14,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:13:14,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4812 transitions. [2022-01-19 07:13:14,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.4) internal successors, (4812), 30 states have internal predecessors, (4812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:14,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:14,591 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:14,591 INFO L186 Difference]: Start difference. First operand has 821 places, 573 transitions, 11276 flow. Second operand 30 states and 4812 transitions. [2022-01-19 07:13:14,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 836 places, 680 transitions, 15081 flow [2022-01-19 07:13:15,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 823 places, 680 transitions, 14757 flow, removed 72 selfloop flow, removed 13 redundant places. [2022-01-19 07:13:15,155 INFO L242 Difference]: Finished difference. Result has 836 places, 578 transitions, 11603 flow [2022-01-19 07:13:15,156 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10991, PETRI_DIFFERENCE_MINUEND_PLACES=794, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=11603, PETRI_PLACES=836, PETRI_TRANSITIONS=578} [2022-01-19 07:13:15,156 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 649 predicate places. [2022-01-19 07:13:15,156 INFO L470 AbstractCegarLoop]: Abstraction has has 836 places, 578 transitions, 11603 flow [2022-01-19 07:13:15,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:15,156 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:13:15,156 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:13:15,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable351 [2022-01-19 07:13:15,156 INFO L402 AbstractCegarLoop]: === Iteration 353 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:13:15,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:13:15,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1752617230, now seen corresponding path program 49 times [2022-01-19 07:13:15,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:13:15,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721377245] [2022-01-19 07:13:15,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:13:15,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:13:15,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:13:15,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:13:15,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:13:15,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721377245] [2022-01-19 07:13:15,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721377245] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:13:15,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:13:15,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:13:15,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088068450] [2022-01-19 07:13:15,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:13:15,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:13:15,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:13:15,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:13:15,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:13:15,258 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:13:15,259 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 836 places, 578 transitions, 11603 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:15,259 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:13:15,259 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:13:15,259 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:13:16,475 INFO L129 PetriNetUnfolder]: 607/2377 cut-off events. [2022-01-19 07:13:16,475 INFO L130 PetriNetUnfolder]: For 74030/74068 co-relation queries the response was YES. [2022-01-19 07:13:16,547 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19600 conditions, 2377 events. 607/2377 cut-off events. For 74030/74068 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 18426 event pairs, 210 based on Foata normal form. 9/2319 useless extension candidates. Maximal degree in co-relation 19241. Up to 563 conditions per place. [2022-01-19 07:13:16,556 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 321 selfloop transitions, 159 changer transitions 60/681 dead transitions. [2022-01-19 07:13:16,556 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 849 places, 681 transitions, 15323 flow [2022-01-19 07:13:16,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:13:16,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:13:16,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4662 transitions. [2022-01-19 07:13:16,558 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655172413793103 [2022-01-19 07:13:16,558 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4662 transitions. [2022-01-19 07:13:16,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4662 transitions. [2022-01-19 07:13:16,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:13:16,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4662 transitions. [2022-01-19 07:13:16,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.75862068965517) internal successors, (4662), 29 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:16,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:16,564 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:16,564 INFO L186 Difference]: Start difference. First operand has 836 places, 578 transitions, 11603 flow. Second operand 29 states and 4662 transitions. [2022-01-19 07:13:16,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 849 places, 681 transitions, 15323 flow [2022-01-19 07:13:17,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 835 places, 681 transitions, 14944 flow, removed 74 selfloop flow, removed 14 redundant places. [2022-01-19 07:13:17,157 INFO L242 Difference]: Finished difference. Result has 848 places, 589 transitions, 11998 flow [2022-01-19 07:13:17,157 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11266, PETRI_DIFFERENCE_MINUEND_PLACES=807, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=11998, PETRI_PLACES=848, PETRI_TRANSITIONS=589} [2022-01-19 07:13:17,158 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 661 predicate places. [2022-01-19 07:13:17,158 INFO L470 AbstractCegarLoop]: Abstraction has has 848 places, 589 transitions, 11998 flow [2022-01-19 07:13:17,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:17,158 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:13:17,158 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:13:17,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352 [2022-01-19 07:13:17,158 INFO L402 AbstractCegarLoop]: === Iteration 354 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:13:17,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:13:17,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1449907186, now seen corresponding path program 50 times [2022-01-19 07:13:17,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:13:17,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818084099] [2022-01-19 07:13:17,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:13:17,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:13:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:13:17,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:13:17,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:13:17,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818084099] [2022-01-19 07:13:17,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818084099] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:13:17,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:13:17,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:13:17,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333563111] [2022-01-19 07:13:17,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:13:17,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:13:17,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:13:17,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:13:17,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:13:17,263 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:13:17,264 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 848 places, 589 transitions, 11998 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:17,264 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:13:17,264 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:13:17,264 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:13:18,486 INFO L129 PetriNetUnfolder]: 590/2324 cut-off events. [2022-01-19 07:13:18,487 INFO L130 PetriNetUnfolder]: For 72954/72990 co-relation queries the response was YES. [2022-01-19 07:13:18,538 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19048 conditions, 2324 events. 590/2324 cut-off events. For 72954/72990 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 17879 event pairs, 210 based on Foata normal form. 9/2266 useless extension candidates. Maximal degree in co-relation 18686. Up to 556 conditions per place. [2022-01-19 07:13:18,546 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 318 selfloop transitions, 140 changer transitions 66/665 dead transitions. [2022-01-19 07:13:18,546 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 863 places, 665 transitions, 14766 flow [2022-01-19 07:13:18,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:13:18,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:13:18,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4813 transitions. [2022-01-19 07:13:18,548 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763968253968254 [2022-01-19 07:13:18,548 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4813 transitions. [2022-01-19 07:13:18,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4813 transitions. [2022-01-19 07:13:18,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:13:18,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4813 transitions. [2022-01-19 07:13:18,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:18,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:18,554 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:18,554 INFO L186 Difference]: Start difference. First operand has 848 places, 589 transitions, 11998 flow. Second operand 30 states and 4813 transitions. [2022-01-19 07:13:18,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 863 places, 665 transitions, 14766 flow [2022-01-19 07:13:19,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 849 places, 665 transitions, 14369 flow, removed 67 selfloop flow, removed 14 redundant places. [2022-01-19 07:13:19,120 INFO L242 Difference]: Finished difference. Result has 858 places, 567 transitions, 11264 flow [2022-01-19 07:13:19,121 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11631, PETRI_DIFFERENCE_MINUEND_PLACES=820, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=11264, PETRI_PLACES=858, PETRI_TRANSITIONS=567} [2022-01-19 07:13:19,121 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 671 predicate places. [2022-01-19 07:13:19,121 INFO L470 AbstractCegarLoop]: Abstraction has has 858 places, 567 transitions, 11264 flow [2022-01-19 07:13:19,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:19,121 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:13:19,121 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:13:19,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable353 [2022-01-19 07:13:19,121 INFO L402 AbstractCegarLoop]: === Iteration 355 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:13:19,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:13:19,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1046518696, now seen corresponding path program 51 times [2022-01-19 07:13:19,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:13:19,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003357419] [2022-01-19 07:13:19,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:13:19,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:13:19,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:13:19,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:13:19,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:13:19,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003357419] [2022-01-19 07:13:19,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003357419] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:13:19,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:13:19,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:13:19,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610684821] [2022-01-19 07:13:19,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:13:19,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:13:19,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:13:19,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:13:19,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:13:19,218 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:13:19,219 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 858 places, 567 transitions, 11264 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:19,219 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:13:19,219 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:13:19,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:13:20,396 INFO L129 PetriNetUnfolder]: 597/2351 cut-off events. [2022-01-19 07:13:20,397 INFO L130 PetriNetUnfolder]: For 73839/73877 co-relation queries the response was YES. [2022-01-19 07:13:20,456 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19277 conditions, 2351 events. 597/2351 cut-off events. For 73839/73877 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 18186 event pairs, 201 based on Foata normal form. 9/2295 useless extension candidates. Maximal degree in co-relation 18915. Up to 559 conditions per place. [2022-01-19 07:13:20,464 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 328 selfloop transitions, 146 changer transitions 60/675 dead transitions. [2022-01-19 07:13:20,464 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 860 places, 675 transitions, 15121 flow [2022-01-19 07:13:20,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:13:20,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:13:20,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4822 transitions. [2022-01-19 07:13:20,466 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7653968253968254 [2022-01-19 07:13:20,466 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4822 transitions. [2022-01-19 07:13:20,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4822 transitions. [2022-01-19 07:13:20,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:13:20,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4822 transitions. [2022-01-19 07:13:20,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.73333333333332) internal successors, (4822), 30 states have internal predecessors, (4822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:20,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:20,472 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:20,472 INFO L186 Difference]: Start difference. First operand has 858 places, 567 transitions, 11264 flow. Second operand 30 states and 4822 transitions. [2022-01-19 07:13:20,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 860 places, 675 transitions, 15121 flow [2022-01-19 07:13:21,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 829 places, 675 transitions, 14564 flow, removed 45 selfloop flow, removed 31 redundant places. [2022-01-19 07:13:21,097 INFO L242 Difference]: Finished difference. Result has 842 places, 580 transitions, 11571 flow [2022-01-19 07:13:21,097 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10801, PETRI_DIFFERENCE_MINUEND_PLACES=800, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=11571, PETRI_PLACES=842, PETRI_TRANSITIONS=580} [2022-01-19 07:13:21,098 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 655 predicate places. [2022-01-19 07:13:21,098 INFO L470 AbstractCegarLoop]: Abstraction has has 842 places, 580 transitions, 11571 flow [2022-01-19 07:13:21,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:21,098 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:13:21,098 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:13:21,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable354 [2022-01-19 07:13:21,098 INFO L402 AbstractCegarLoop]: === Iteration 356 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:13:21,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:13:21,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1306770478, now seen corresponding path program 52 times [2022-01-19 07:13:21,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:13:21,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559470290] [2022-01-19 07:13:21,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:13:21,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:13:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:13:21,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:13:21,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:13:21,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559470290] [2022-01-19 07:13:21,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559470290] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:13:21,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:13:21,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:13:21,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810933411] [2022-01-19 07:13:21,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:13:21,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:13:21,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:13:21,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:13:21,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:13:21,198 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:13:21,199 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 842 places, 580 transitions, 11571 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:21,199 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:13:21,199 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:13:21,199 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:13:22,390 INFO L129 PetriNetUnfolder]: 591/2332 cut-off events. [2022-01-19 07:13:22,390 INFO L130 PetriNetUnfolder]: For 73750/73788 co-relation queries the response was YES. [2022-01-19 07:13:22,446 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19133 conditions, 2332 events. 591/2332 cut-off events. For 73750/73788 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 17962 event pairs, 201 based on Foata normal form. 9/2276 useless extension candidates. Maximal degree in co-relation 18777. Up to 557 conditions per place. [2022-01-19 07:13:22,454 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 331 selfloop transitions, 147 changer transitions 62/681 dead transitions. [2022-01-19 07:13:22,454 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 855 places, 681 transitions, 15229 flow [2022-01-19 07:13:22,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:13:22,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:13:22,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4664 transitions. [2022-01-19 07:13:22,456 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658456486042693 [2022-01-19 07:13:22,457 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4664 transitions. [2022-01-19 07:13:22,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4664 transitions. [2022-01-19 07:13:22,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:13:22,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4664 transitions. [2022-01-19 07:13:22,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.82758620689654) internal successors, (4664), 29 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:22,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:22,462 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:22,462 INFO L186 Difference]: Start difference. First operand has 842 places, 580 transitions, 11571 flow. Second operand 29 states and 4664 transitions. [2022-01-19 07:13:22,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 855 places, 681 transitions, 15229 flow [2022-01-19 07:13:23,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 843 places, 681 transitions, 14882 flow, removed 96 selfloop flow, removed 12 redundant places. [2022-01-19 07:13:23,018 INFO L242 Difference]: Finished difference. Result has 857 places, 584 transitions, 11783 flow [2022-01-19 07:13:23,018 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11301, PETRI_DIFFERENCE_MINUEND_PLACES=815, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=11783, PETRI_PLACES=857, PETRI_TRANSITIONS=584} [2022-01-19 07:13:23,018 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 670 predicate places. [2022-01-19 07:13:23,018 INFO L470 AbstractCegarLoop]: Abstraction has has 857 places, 584 transitions, 11783 flow [2022-01-19 07:13:23,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:23,019 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:13:23,019 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:13:23,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable355 [2022-01-19 07:13:23,019 INFO L402 AbstractCegarLoop]: === Iteration 357 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:13:23,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:13:23,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1866181866, now seen corresponding path program 53 times [2022-01-19 07:13:23,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:13:23,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673542220] [2022-01-19 07:13:23,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:13:23,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:13:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:13:23,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:13:23,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:13:23,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673542220] [2022-01-19 07:13:23,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673542220] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:13:23,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:13:23,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:13:23,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035607448] [2022-01-19 07:13:23,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:13:23,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:13:23,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:13:23,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:13:23,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:13:23,116 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:13:23,117 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 857 places, 584 transitions, 11783 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:23,117 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:13:23,117 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:13:23,117 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:13:24,284 INFO L129 PetriNetUnfolder]: 590/2337 cut-off events. [2022-01-19 07:13:24,285 INFO L130 PetriNetUnfolder]: For 74148/74186 co-relation queries the response was YES. [2022-01-19 07:13:24,353 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19237 conditions, 2337 events. 590/2337 cut-off events. For 74148/74186 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 18021 event pairs, 202 based on Foata normal form. 9/2282 useless extension candidates. Maximal degree in co-relation 18875. Up to 559 conditions per place. [2022-01-19 07:13:24,362 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 328 selfloop transitions, 154 changer transitions 63/686 dead transitions. [2022-01-19 07:13:24,362 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 870 places, 686 transitions, 15561 flow [2022-01-19 07:13:24,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 07:13:24,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 07:13:24,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4503 transitions. [2022-01-19 07:13:24,364 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658163265306123 [2022-01-19 07:13:24,364 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4503 transitions. [2022-01-19 07:13:24,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4503 transitions. [2022-01-19 07:13:24,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:13:24,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4503 transitions. [2022-01-19 07:13:24,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.82142857142858) internal successors, (4503), 28 states have internal predecessors, (4503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:24,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:24,370 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:24,370 INFO L186 Difference]: Start difference. First operand has 857 places, 584 transitions, 11783 flow. Second operand 28 states and 4503 transitions. [2022-01-19 07:13:24,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 870 places, 686 transitions, 15561 flow [2022-01-19 07:13:25,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 856 places, 686 transitions, 15185 flow, removed 92 selfloop flow, removed 14 redundant places. [2022-01-19 07:13:25,019 INFO L242 Difference]: Finished difference. Result has 868 places, 592 transitions, 12084 flow [2022-01-19 07:13:25,019 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11481, PETRI_DIFFERENCE_MINUEND_PLACES=829, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=12084, PETRI_PLACES=868, PETRI_TRANSITIONS=592} [2022-01-19 07:13:25,019 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 681 predicate places. [2022-01-19 07:13:25,019 INFO L470 AbstractCegarLoop]: Abstraction has has 868 places, 592 transitions, 12084 flow [2022-01-19 07:13:25,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:25,020 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:13:25,020 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:13:25,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable356 [2022-01-19 07:13:25,020 INFO L402 AbstractCegarLoop]: === Iteration 358 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:13:25,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:13:25,020 INFO L85 PathProgramCache]: Analyzing trace with hash 219871220, now seen corresponding path program 54 times [2022-01-19 07:13:25,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:13:25,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085286808] [2022-01-19 07:13:25,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:13:25,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:13:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:13:25,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:13:25,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:13:25,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085286808] [2022-01-19 07:13:25,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085286808] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:13:25,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:13:25,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:13:25,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265150695] [2022-01-19 07:13:25,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:13:25,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:13:25,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:13:25,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:13:25,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:13:25,120 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:13:25,121 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 868 places, 592 transitions, 12084 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:25,121 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:13:25,121 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:13:25,121 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:13:26,317 INFO L129 PetriNetUnfolder]: 565/2268 cut-off events. [2022-01-19 07:13:26,317 INFO L130 PetriNetUnfolder]: For 70636/70674 co-relation queries the response was YES. [2022-01-19 07:13:26,374 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18412 conditions, 2268 events. 565/2268 cut-off events. For 70636/70674 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 17348 event pairs, 193 based on Foata normal form. 9/2214 useless extension candidates. Maximal degree in co-relation 18047. Up to 546 conditions per place. [2022-01-19 07:13:26,382 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 321 selfloop transitions, 131 changer transitions 69/662 dead transitions. [2022-01-19 07:13:26,382 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 884 places, 662 transitions, 14706 flow [2022-01-19 07:13:26,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:13:26,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:13:26,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4809 transitions. [2022-01-19 07:13:26,385 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7633333333333333 [2022-01-19 07:13:26,385 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4809 transitions. [2022-01-19 07:13:26,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4809 transitions. [2022-01-19 07:13:26,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:13:26,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4809 transitions. [2022-01-19 07:13:26,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.3) internal successors, (4809), 30 states have internal predecessors, (4809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:26,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:26,390 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:26,391 INFO L186 Difference]: Start difference. First operand has 868 places, 592 transitions, 12084 flow. Second operand 30 states and 4809 transitions. [2022-01-19 07:13:26,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 884 places, 662 transitions, 14706 flow [2022-01-19 07:13:26,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 869 places, 662 transitions, 14293 flow, removed 63 selfloop flow, removed 15 redundant places. [2022-01-19 07:13:26,966 INFO L242 Difference]: Finished difference. Result has 878 places, 562 transitions, 11060 flow [2022-01-19 07:13:26,966 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11699, PETRI_DIFFERENCE_MINUEND_PLACES=840, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=11060, PETRI_PLACES=878, PETRI_TRANSITIONS=562} [2022-01-19 07:13:26,966 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 691 predicate places. [2022-01-19 07:13:26,966 INFO L470 AbstractCegarLoop]: Abstraction has has 878 places, 562 transitions, 11060 flow [2022-01-19 07:13:26,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:26,967 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:13:26,967 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:13:26,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable357 [2022-01-19 07:13:26,967 INFO L402 AbstractCegarLoop]: === Iteration 359 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:13:26,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:13:26,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1696012714, now seen corresponding path program 55 times [2022-01-19 07:13:26,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:13:26,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300272853] [2022-01-19 07:13:26,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:13:26,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:13:26,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:13:27,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:13:27,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:13:27,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300272853] [2022-01-19 07:13:27,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300272853] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:13:27,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:13:27,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:13:27,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191263124] [2022-01-19 07:13:27,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:13:27,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:13:27,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:13:27,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:13:27,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:13:27,069 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:13:27,070 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 878 places, 562 transitions, 11060 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:27,070 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:13:27,070 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:13:27,070 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:13:28,254 INFO L129 PetriNetUnfolder]: 541/2203 cut-off events. [2022-01-19 07:13:28,255 INFO L130 PetriNetUnfolder]: For 68870/68893 co-relation queries the response was YES. [2022-01-19 07:13:28,296 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17514 conditions, 2203 events. 541/2203 cut-off events. For 68870/68893 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 16647 event pairs, 185 based on Foata normal form. 5/2146 useless extension candidates. Maximal degree in co-relation 17149. Up to 540 conditions per place. [2022-01-19 07:13:28,303 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 268 selfloop transitions, 152 changer transitions 66/627 dead transitions. [2022-01-19 07:13:28,303 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 870 places, 627 transitions, 13488 flow [2022-01-19 07:13:28,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 07:13:28,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 07:13:28,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4492 transitions. [2022-01-19 07:13:28,305 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7639455782312925 [2022-01-19 07:13:28,305 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4492 transitions. [2022-01-19 07:13:28,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4492 transitions. [2022-01-19 07:13:28,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:13:28,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4492 transitions. [2022-01-19 07:13:28,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.42857142857142) internal successors, (4492), 28 states have internal predecessors, (4492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:28,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:28,310 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:28,310 INFO L186 Difference]: Start difference. First operand has 878 places, 562 transitions, 11060 flow. Second operand 28 states and 4492 transitions. [2022-01-19 07:13:28,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 870 places, 627 transitions, 13488 flow [2022-01-19 07:13:28,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 836 places, 627 transitions, 12862 flow, removed 40 selfloop flow, removed 34 redundant places. [2022-01-19 07:13:28,855 INFO L242 Difference]: Finished difference. Result has 843 places, 530 transitions, 9853 flow [2022-01-19 07:13:28,855 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10498, PETRI_DIFFERENCE_MINUEND_PLACES=809, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=9853, PETRI_PLACES=843, PETRI_TRANSITIONS=530} [2022-01-19 07:13:28,855 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 656 predicate places. [2022-01-19 07:13:28,855 INFO L470 AbstractCegarLoop]: Abstraction has has 843 places, 530 transitions, 9853 flow [2022-01-19 07:13:28,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:28,856 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:13:28,856 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:13:28,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358 [2022-01-19 07:13:28,856 INFO L402 AbstractCegarLoop]: === Iteration 360 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:13:28,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:13:28,856 INFO L85 PathProgramCache]: Analyzing trace with hash -361020288, now seen corresponding path program 56 times [2022-01-19 07:13:28,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:13:28,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844800592] [2022-01-19 07:13:28,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:13:28,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:13:28,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:13:28,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:13:28,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:13:28,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844800592] [2022-01-19 07:13:28,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844800592] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:13:28,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:13:28,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:13:28,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947309861] [2022-01-19 07:13:28,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:13:28,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:13:28,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:13:28,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:13:28,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:13:28,953 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:13:28,954 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 843 places, 530 transitions, 9853 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:28,954 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:13:28,954 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:13:28,954 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:13:30,032 INFO L129 PetriNetUnfolder]: 521/2132 cut-off events. [2022-01-19 07:13:30,032 INFO L130 PetriNetUnfolder]: For 61621/61659 co-relation queries the response was YES. [2022-01-19 07:13:30,082 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16553 conditions, 2132 events. 521/2132 cut-off events. For 61621/61659 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 15908 event pairs, 186 based on Foata normal form. 9/2078 useless extension candidates. Maximal degree in co-relation 16202. Up to 529 conditions per place. [2022-01-19 07:13:30,089 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 294 selfloop transitions, 102 changer transitions 63/600 dead transitions. [2022-01-19 07:13:30,089 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 837 places, 600 transitions, 12387 flow [2022-01-19 07:13:30,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 07:13:30,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 07:13:30,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4495 transitions. [2022-01-19 07:13:30,091 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7644557823129252 [2022-01-19 07:13:30,091 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4495 transitions. [2022-01-19 07:13:30,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4495 transitions. [2022-01-19 07:13:30,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:13:30,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4495 transitions. [2022-01-19 07:13:30,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.53571428571428) internal successors, (4495), 28 states have internal predecessors, (4495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:30,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:30,097 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:30,097 INFO L186 Difference]: Start difference. First operand has 843 places, 530 transitions, 9853 flow. Second operand 28 states and 4495 transitions. [2022-01-19 07:13:30,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 837 places, 600 transitions, 12387 flow [2022-01-19 07:13:30,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 796 places, 600 transitions, 11507 flow, removed 44 selfloop flow, removed 41 redundant places. [2022-01-19 07:13:30,538 INFO L242 Difference]: Finished difference. Result has 805 places, 505 transitions, 8652 flow [2022-01-19 07:13:30,538 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9064, PETRI_DIFFERENCE_MINUEND_PLACES=769, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=8652, PETRI_PLACES=805, PETRI_TRANSITIONS=505} [2022-01-19 07:13:30,539 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 618 predicate places. [2022-01-19 07:13:30,539 INFO L470 AbstractCegarLoop]: Abstraction has has 805 places, 505 transitions, 8652 flow [2022-01-19 07:13:30,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:30,539 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:13:30,539 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:13:30,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable359 [2022-01-19 07:13:30,539 INFO L402 AbstractCegarLoop]: === Iteration 361 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:13:30,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:13:30,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1924282002, now seen corresponding path program 57 times [2022-01-19 07:13:30,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:13:30,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972261725] [2022-01-19 07:13:30,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:13:30,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:13:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:13:30,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:13:30,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:13:30,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972261725] [2022-01-19 07:13:30,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972261725] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:13:30,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:13:30,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:13:30,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237046166] [2022-01-19 07:13:30,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:13:30,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:13:30,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:13:30,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:13:30,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:13:30,641 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:13:30,642 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 805 places, 505 transitions, 8652 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:30,642 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:13:30,642 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:13:30,642 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:13:31,671 INFO L129 PetriNetUnfolder]: 495/2050 cut-off events. [2022-01-19 07:13:31,671 INFO L130 PetriNetUnfolder]: For 55364/55387 co-relation queries the response was YES. [2022-01-19 07:13:31,734 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15421 conditions, 2050 events. 495/2050 cut-off events. For 55364/55387 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 15087 event pairs, 177 based on Foata normal form. 5/1995 useless extension candidates. Maximal degree in co-relation 15085. Up to 514 conditions per place. [2022-01-19 07:13:31,742 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 261 selfloop transitions, 97 changer transitions 67/566 dead transitions. [2022-01-19 07:13:31,742 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 798 places, 566 transitions, 10802 flow [2022-01-19 07:13:31,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 07:13:31,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 07:13:31,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4330 transitions. [2022-01-19 07:13:31,744 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763668430335097 [2022-01-19 07:13:31,744 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4330 transitions. [2022-01-19 07:13:31,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4330 transitions. [2022-01-19 07:13:31,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:13:31,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4330 transitions. [2022-01-19 07:13:31,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 160.37037037037038) internal successors, (4330), 27 states have internal predecessors, (4330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:31,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:31,751 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:31,751 INFO L186 Difference]: Start difference. First operand has 805 places, 505 transitions, 8652 flow. Second operand 27 states and 4330 transitions. [2022-01-19 07:13:31,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 798 places, 566 transitions, 10802 flow [2022-01-19 07:13:32,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 766 places, 566 transitions, 10251 flow, removed 32 selfloop flow, removed 32 redundant places. [2022-01-19 07:13:32,174 INFO L242 Difference]: Finished difference. Result has 773 places, 468 transitions, 7462 flow [2022-01-19 07:13:32,174 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8161, PETRI_DIFFERENCE_MINUEND_PLACES=740, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=7462, PETRI_PLACES=773, PETRI_TRANSITIONS=468} [2022-01-19 07:13:32,175 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 586 predicate places. [2022-01-19 07:13:32,175 INFO L470 AbstractCegarLoop]: Abstraction has has 773 places, 468 transitions, 7462 flow [2022-01-19 07:13:32,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:32,175 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:13:32,175 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:13:32,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable360 [2022-01-19 07:13:32,175 INFO L402 AbstractCegarLoop]: === Iteration 362 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:13:32,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:13:32,176 INFO L85 PathProgramCache]: Analyzing trace with hash 433843228, now seen corresponding path program 58 times [2022-01-19 07:13:32,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:13:32,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736896626] [2022-01-19 07:13:32,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:13:32,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:13:32,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:13:32,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:13:32,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:13:32,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736896626] [2022-01-19 07:13:32,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736896626] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:13:32,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:13:32,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:13:32,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140153881] [2022-01-19 07:13:32,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:13:32,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:13:32,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:13:32,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:13:32,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:13:32,277 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:13:32,278 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 773 places, 468 transitions, 7462 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:32,278 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:13:32,278 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:13:32,278 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:13:33,420 INFO L129 PetriNetUnfolder]: 487/2031 cut-off events. [2022-01-19 07:13:33,420 INFO L130 PetriNetUnfolder]: For 51450/51473 co-relation queries the response was YES. [2022-01-19 07:13:33,454 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14989 conditions, 2031 events. 487/2031 cut-off events. For 51450/51473 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 14900 event pairs, 183 based on Foata normal form. 5/1977 useless extension candidates. Maximal degree in co-relation 14663. Up to 509 conditions per place. [2022-01-19 07:13:33,459 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 249 selfloop transitions, 96 changer transitions 63/549 dead transitions. [2022-01-19 07:13:33,460 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 761 places, 549 transitions, 10088 flow [2022-01-19 07:13:33,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:13:33,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:13:33,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4649 transitions. [2022-01-19 07:13:33,462 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7633825944170771 [2022-01-19 07:13:33,462 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4649 transitions. [2022-01-19 07:13:33,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4649 transitions. [2022-01-19 07:13:33,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:13:33,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4649 transitions. [2022-01-19 07:13:33,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.31034482758622) internal successors, (4649), 29 states have internal predecessors, (4649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:33,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:33,468 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:33,468 INFO L186 Difference]: Start difference. First operand has 773 places, 468 transitions, 7462 flow. Second operand 29 states and 4649 transitions. [2022-01-19 07:13:33,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 761 places, 549 transitions, 10088 flow [2022-01-19 07:13:33,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 725 places, 549 transitions, 9301 flow, removed 32 selfloop flow, removed 36 redundant places. [2022-01-19 07:13:33,787 INFO L242 Difference]: Finished difference. Result has 736 places, 455 transitions, 6740 flow [2022-01-19 07:13:33,787 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6817, PETRI_DIFFERENCE_MINUEND_PLACES=697, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6740, PETRI_PLACES=736, PETRI_TRANSITIONS=455} [2022-01-19 07:13:33,787 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 549 predicate places. [2022-01-19 07:13:33,788 INFO L470 AbstractCegarLoop]: Abstraction has has 736 places, 455 transitions, 6740 flow [2022-01-19 07:13:33,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:33,788 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:13:33,788 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:13:33,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361 [2022-01-19 07:13:33,788 INFO L402 AbstractCegarLoop]: === Iteration 363 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:13:33,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:13:33,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1437060252, now seen corresponding path program 59 times [2022-01-19 07:13:33,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:13:33,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304377299] [2022-01-19 07:13:33,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:13:33,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:13:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:13:33,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:13:33,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:13:33,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304377299] [2022-01-19 07:13:33,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304377299] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:13:33,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:13:33,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:13:33,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409673555] [2022-01-19 07:13:33,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:13:33,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:13:33,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:13:33,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:13:33,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:13:33,887 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:13:33,888 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 736 places, 455 transitions, 6740 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:33,888 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:13:33,888 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:13:33,888 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:13:34,822 INFO L129 PetriNetUnfolder]: 477/2004 cut-off events. [2022-01-19 07:13:34,822 INFO L130 PetriNetUnfolder]: For 46345/46368 co-relation queries the response was YES. [2022-01-19 07:13:34,863 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14295 conditions, 2004 events. 477/2004 cut-off events. For 46345/46368 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 14691 event pairs, 178 based on Foata normal form. 5/1949 useless extension candidates. Maximal degree in co-relation 13977. Up to 504 conditions per place. [2022-01-19 07:13:34,869 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 243 selfloop transitions, 89 changer transitions 62/535 dead transitions. [2022-01-19 07:13:34,869 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 739 places, 535 transitions, 9239 flow [2022-01-19 07:13:34,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:13:34,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:13:34,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4810 transitions. [2022-01-19 07:13:34,871 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7634920634920634 [2022-01-19 07:13:34,871 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4810 transitions. [2022-01-19 07:13:34,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4810 transitions. [2022-01-19 07:13:34,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:13:34,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4810 transitions. [2022-01-19 07:13:34,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.33333333333334) internal successors, (4810), 30 states have internal predecessors, (4810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:34,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:34,877 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:34,878 INFO L186 Difference]: Start difference. First operand has 736 places, 455 transitions, 6740 flow. Second operand 30 states and 4810 transitions. [2022-01-19 07:13:34,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 739 places, 535 transitions, 9239 flow [2022-01-19 07:13:35,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 710 places, 535 transitions, 8846 flow, removed 27 selfloop flow, removed 29 redundant places. [2022-01-19 07:13:35,164 INFO L242 Difference]: Finished difference. Result has 722 places, 442 transitions, 6348 flow [2022-01-19 07:13:35,164 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6422, PETRI_DIFFERENCE_MINUEND_PLACES=681, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=6348, PETRI_PLACES=722, PETRI_TRANSITIONS=442} [2022-01-19 07:13:35,165 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 535 predicate places. [2022-01-19 07:13:35,165 INFO L470 AbstractCegarLoop]: Abstraction has has 722 places, 442 transitions, 6348 flow [2022-01-19 07:13:35,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:35,165 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:13:35,165 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:13:35,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable362 [2022-01-19 07:13:35,165 INFO L402 AbstractCegarLoop]: === Iteration 364 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:13:35,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:13:35,166 INFO L85 PathProgramCache]: Analyzing trace with hash 704632400, now seen corresponding path program 60 times [2022-01-19 07:13:35,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:13:35,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436231457] [2022-01-19 07:13:35,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:13:35,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:13:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:13:35,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:13:35,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:13:35,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436231457] [2022-01-19 07:13:35,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436231457] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:13:35,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:13:35,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:13:35,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365147712] [2022-01-19 07:13:35,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:13:35,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:13:35,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:13:35,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:13:35,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:13:35,266 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:13:35,267 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 722 places, 442 transitions, 6348 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:35,267 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:13:35,267 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:13:35,267 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:13:36,219 INFO L129 PetriNetUnfolder]: 449/1893 cut-off events. [2022-01-19 07:13:36,219 INFO L130 PetriNetUnfolder]: For 42491/42529 co-relation queries the response was YES. [2022-01-19 07:13:36,258 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13367 conditions, 1893 events. 449/1893 cut-off events. For 42491/42529 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 13571 event pairs, 175 based on Foata normal form. 9/1843 useless extension candidates. Maximal degree in co-relation 13053. Up to 489 conditions per place. [2022-01-19 07:13:36,263 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 227 selfloop transitions, 61 changer transitions 66/495 dead transitions. [2022-01-19 07:13:36,263 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 724 places, 495 transitions, 8082 flow [2022-01-19 07:13:36,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:13:36,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:13:36,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4793 transitions. [2022-01-19 07:13:36,266 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7607936507936508 [2022-01-19 07:13:36,266 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4793 transitions. [2022-01-19 07:13:36,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4793 transitions. [2022-01-19 07:13:36,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:13:36,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4793 transitions. [2022-01-19 07:13:36,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.76666666666668) internal successors, (4793), 30 states have internal predecessors, (4793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:36,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:36,271 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:36,271 INFO L186 Difference]: Start difference. First operand has 722 places, 442 transitions, 6348 flow. Second operand 30 states and 4793 transitions. [2022-01-19 07:13:36,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 724 places, 495 transitions, 8082 flow [2022-01-19 07:13:36,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 694 places, 495 transitions, 7740 flow, removed 28 selfloop flow, removed 30 redundant places. [2022-01-19 07:13:36,536 INFO L242 Difference]: Finished difference. Result has 701 places, 398 transitions, 5225 flow [2022-01-19 07:13:36,536 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6038, PETRI_DIFFERENCE_MINUEND_PLACES=665, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=5225, PETRI_PLACES=701, PETRI_TRANSITIONS=398} [2022-01-19 07:13:36,537 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 514 predicate places. [2022-01-19 07:13:36,537 INFO L470 AbstractCegarLoop]: Abstraction has has 701 places, 398 transitions, 5225 flow [2022-01-19 07:13:36,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:36,537 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:13:36,537 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:13:36,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable363 [2022-01-19 07:13:36,537 INFO L402 AbstractCegarLoop]: === Iteration 365 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:13:36,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:13:36,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1213269254, now seen corresponding path program 61 times [2022-01-19 07:13:36,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:13:36,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074772030] [2022-01-19 07:13:36,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:13:36,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:13:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:13:36,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:13:36,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:13:36,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074772030] [2022-01-19 07:13:36,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074772030] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:13:36,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:13:36,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:13:36,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205635106] [2022-01-19 07:13:36,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:13:36,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:13:36,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:13:36,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:13:36,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:13:36,635 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:13:36,635 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 701 places, 398 transitions, 5225 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:36,635 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:13:36,635 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:13:36,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:13:37,503 INFO L129 PetriNetUnfolder]: 425/1794 cut-off events. [2022-01-19 07:13:37,503 INFO L130 PetriNetUnfolder]: For 38764/38802 co-relation queries the response was YES. [2022-01-19 07:13:37,546 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12472 conditions, 1794 events. 425/1794 cut-off events. For 38764/38802 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 12551 event pairs, 176 based on Foata normal form. 9/1745 useless extension candidates. Maximal degree in co-relation 12170. Up to 478 conditions per place. [2022-01-19 07:13:37,552 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 199 selfloop transitions, 53 changer transitions 64/457 dead transitions. [2022-01-19 07:13:37,552 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 678 places, 457 transitions, 7004 flow [2022-01-19 07:13:37,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:13:37,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:13:37,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4637 transitions. [2022-01-19 07:13:37,555 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7614121510673235 [2022-01-19 07:13:37,555 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4637 transitions. [2022-01-19 07:13:37,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4637 transitions. [2022-01-19 07:13:37,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:13:37,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4637 transitions. [2022-01-19 07:13:37,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 159.89655172413794) internal successors, (4637), 29 states have internal predecessors, (4637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:37,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:37,560 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:37,560 INFO L186 Difference]: Start difference. First operand has 701 places, 398 transitions, 5225 flow. Second operand 29 states and 4637 transitions. [2022-01-19 07:13:37,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 678 places, 457 transitions, 7004 flow [2022-01-19 07:13:37,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 645 places, 457 transitions, 6515 flow, removed 35 selfloop flow, removed 33 redundant places. [2022-01-19 07:13:37,781 INFO L242 Difference]: Finished difference. Result has 654 places, 362 transitions, 4206 flow [2022-01-19 07:13:37,782 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4815, PETRI_DIFFERENCE_MINUEND_PLACES=617, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=4206, PETRI_PLACES=654, PETRI_TRANSITIONS=362} [2022-01-19 07:13:37,782 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 467 predicate places. [2022-01-19 07:13:37,782 INFO L470 AbstractCegarLoop]: Abstraction has has 654 places, 362 transitions, 4206 flow [2022-01-19 07:13:37,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:37,782 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:13:37,782 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:13:37,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable364 [2022-01-19 07:13:37,782 INFO L402 AbstractCegarLoop]: === Iteration 366 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:13:37,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:13:37,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1115766212, now seen corresponding path program 62 times [2022-01-19 07:13:37,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:13:37,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414119096] [2022-01-19 07:13:37,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:13:37,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:13:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:13:37,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:13:37,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:13:37,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414119096] [2022-01-19 07:13:37,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414119096] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:13:37,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:13:37,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:13:37,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120501803] [2022-01-19 07:13:37,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:13:37,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:13:37,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:13:37,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:13:37,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:13:37,879 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:13:37,879 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 654 places, 362 transitions, 4206 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:37,880 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:13:37,880 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:13:37,880 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:13:38,693 INFO L129 PetriNetUnfolder]: 391/1663 cut-off events. [2022-01-19 07:13:38,693 INFO L130 PetriNetUnfolder]: For 32999/33022 co-relation queries the response was YES. [2022-01-19 07:13:38,720 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11210 conditions, 1663 events. 391/1663 cut-off events. For 32999/33022 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 11344 event pairs, 165 based on Foata normal form. 5/1611 useless extension candidates. Maximal degree in co-relation 10918. Up to 457 conditions per place. [2022-01-19 07:13:38,725 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 168 selfloop transitions, 30 changer transitions 68/407 dead transitions. [2022-01-19 07:13:38,725 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 407 transitions, 5559 flow [2022-01-19 07:13:38,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:13:38,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:13:38,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4775 transitions. [2022-01-19 07:13:38,727 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7579365079365079 [2022-01-19 07:13:38,727 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4775 transitions. [2022-01-19 07:13:38,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4775 transitions. [2022-01-19 07:13:38,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:13:38,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4775 transitions. [2022-01-19 07:13:38,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.16666666666666) internal successors, (4775), 30 states have internal predecessors, (4775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:38,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:38,734 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:38,734 INFO L186 Difference]: Start difference. First operand has 654 places, 362 transitions, 4206 flow. Second operand 30 states and 4775 transitions. [2022-01-19 07:13:38,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 407 transitions, 5559 flow [2022-01-19 07:13:38,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 407 transitions, 5247 flow, removed 28 selfloop flow, removed 32 redundant places. [2022-01-19 07:13:38,905 INFO L242 Difference]: Finished difference. Result has 612 places, 309 transitions, 3014 flow [2022-01-19 07:13:38,905 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3918, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3014, PETRI_PLACES=612, PETRI_TRANSITIONS=309} [2022-01-19 07:13:38,906 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 425 predicate places. [2022-01-19 07:13:38,906 INFO L470 AbstractCegarLoop]: Abstraction has has 612 places, 309 transitions, 3014 flow [2022-01-19 07:13:38,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:38,906 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:13:38,906 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:13:38,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable365 [2022-01-19 07:13:38,906 INFO L402 AbstractCegarLoop]: === Iteration 367 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:13:38,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:13:38,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1731795466, now seen corresponding path program 63 times [2022-01-19 07:13:38,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:13:38,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9352729] [2022-01-19 07:13:38,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:13:38,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:13:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:13:39,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:13:39,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:13:39,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9352729] [2022-01-19 07:13:39,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9352729] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:13:39,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:13:39,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:13:39,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646197558] [2022-01-19 07:13:39,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:13:39,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:13:39,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:13:39,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:13:39,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:13:39,005 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:13:39,006 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 309 transitions, 3014 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:39,006 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:13:39,006 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:13:39,006 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:13:40,140 INFO L129 PetriNetUnfolder]: 430/1772 cut-off events. [2022-01-19 07:13:40,140 INFO L130 PetriNetUnfolder]: For 36265/36290 co-relation queries the response was YES. [2022-01-19 07:13:40,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12294 conditions, 1772 events. 430/1772 cut-off events. For 36265/36290 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 12245 event pairs, 212 based on Foata normal form. 3/1718 useless extension candidates. Maximal degree in co-relation 12015. Up to 460 conditions per place. [2022-01-19 07:13:40,182 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 190 selfloop transitions, 51 changer transitions 74/456 dead transitions. [2022-01-19 07:13:40,182 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 456 transitions, 6942 flow [2022-01-19 07:13:40,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 07:13:40,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 07:13:40,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7335 transitions. [2022-01-19 07:13:40,185 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7593167701863354 [2022-01-19 07:13:40,185 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7335 transitions. [2022-01-19 07:13:40,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7335 transitions. [2022-01-19 07:13:40,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:13:40,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7335 transitions. [2022-01-19 07:13:40,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.45652173913044) internal successors, (7335), 46 states have internal predecessors, (7335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:40,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:40,195 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:40,195 INFO L186 Difference]: Start difference. First operand has 612 places, 309 transitions, 3014 flow. Second operand 46 states and 7335 transitions. [2022-01-19 07:13:40,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 456 transitions, 6942 flow [2022-01-19 07:13:40,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 456 transitions, 6321 flow, removed 92 selfloop flow, removed 35 redundant places. [2022-01-19 07:13:40,346 INFO L242 Difference]: Finished difference. Result has 584 places, 329 transitions, 3411 flow [2022-01-19 07:13:40,346 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2742, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=3411, PETRI_PLACES=584, PETRI_TRANSITIONS=329} [2022-01-19 07:13:40,347 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 397 predicate places. [2022-01-19 07:13:40,347 INFO L470 AbstractCegarLoop]: Abstraction has has 584 places, 329 transitions, 3411 flow [2022-01-19 07:13:40,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:40,347 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:13:40,347 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:13:40,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable366 [2022-01-19 07:13:40,347 INFO L402 AbstractCegarLoop]: === Iteration 368 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:13:40,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:13:40,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1184965612, now seen corresponding path program 64 times [2022-01-19 07:13:40,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:13:40,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578067457] [2022-01-19 07:13:40,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:13:40,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:13:40,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:13:40,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:13:40,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:13:40,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578067457] [2022-01-19 07:13:40,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578067457] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:13:40,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:13:40,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:13:40,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388711092] [2022-01-19 07:13:40,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:13:40,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:13:40,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:13:40,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:13:40,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:13:40,469 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:13:40,469 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 584 places, 329 transitions, 3411 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:40,469 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:13:40,469 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:13:40,469 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:13:41,542 INFO L129 PetriNetUnfolder]: 474/1904 cut-off events. [2022-01-19 07:13:41,543 INFO L130 PetriNetUnfolder]: For 41680/41690 co-relation queries the response was YES. [2022-01-19 07:13:41,578 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13573 conditions, 1904 events. 474/1904 cut-off events. For 41680/41690 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 13378 event pairs, 252 based on Foata normal form. 1/1846 useless extension candidates. Maximal degree in co-relation 13289. Up to 459 conditions per place. [2022-01-19 07:13:41,584 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 194 selfloop transitions, 65 changer transitions 74/474 dead transitions. [2022-01-19 07:13:41,584 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 474 transitions, 7558 flow [2022-01-19 07:13:41,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-19 07:13:41,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-01-19 07:13:41,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6865 transitions. [2022-01-19 07:13:41,587 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7602436323366556 [2022-01-19 07:13:41,587 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6865 transitions. [2022-01-19 07:13:41,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6865 transitions. [2022-01-19 07:13:41,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:13:41,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6865 transitions. [2022-01-19 07:13:41,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 159.65116279069767) internal successors, (6865), 43 states have internal predecessors, (6865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:41,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:41,596 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:41,596 INFO L186 Difference]: Start difference. First operand has 584 places, 329 transitions, 3411 flow. Second operand 43 states and 6865 transitions. [2022-01-19 07:13:41,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 474 transitions, 7558 flow [2022-01-19 07:13:41,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 474 transitions, 6769 flow, removed 382 selfloop flow, removed 25 redundant places. [2022-01-19 07:13:41,764 INFO L242 Difference]: Finished difference. Result has 604 places, 350 transitions, 3883 flow [2022-01-19 07:13:41,764 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3165, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=3883, PETRI_PLACES=604, PETRI_TRANSITIONS=350} [2022-01-19 07:13:41,764 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 417 predicate places. [2022-01-19 07:13:41,764 INFO L470 AbstractCegarLoop]: Abstraction has has 604 places, 350 transitions, 3883 flow [2022-01-19 07:13:41,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:41,765 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:13:41,765 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:13:41,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable367 [2022-01-19 07:13:41,765 INFO L402 AbstractCegarLoop]: === Iteration 369 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:13:41,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:13:41,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1833710810, now seen corresponding path program 65 times [2022-01-19 07:13:41,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:13:41,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753117976] [2022-01-19 07:13:41,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:13:41,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:13:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:13:41,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:13:41,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:13:41,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753117976] [2022-01-19 07:13:41,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753117976] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:13:41,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:13:41,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:13:41,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685168484] [2022-01-19 07:13:41,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:13:41,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:13:41,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:13:41,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:13:41,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:13:41,862 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:13:41,863 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 350 transitions, 3883 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:41,863 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:13:41,863 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:13:41,863 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:13:42,985 INFO L129 PetriNetUnfolder]: 512/1978 cut-off events. [2022-01-19 07:13:42,985 INFO L130 PetriNetUnfolder]: For 50741/50774 co-relation queries the response was YES. [2022-01-19 07:13:43,024 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15031 conditions, 1978 events. 512/1978 cut-off events. For 50741/50774 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 14040 event pairs, 235 based on Foata normal form. 3/1919 useless extension candidates. Maximal degree in co-relation 14735. Up to 460 conditions per place. [2022-01-19 07:13:43,031 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 209 selfloop transitions, 71 changer transitions 74/495 dead transitions. [2022-01-19 07:13:43,031 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 618 places, 495 transitions, 8316 flow [2022-01-19 07:13:43,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 07:13:43,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 07:13:43,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7181 transitions. [2022-01-19 07:13:43,034 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7598941798941798 [2022-01-19 07:13:43,034 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7181 transitions. [2022-01-19 07:13:43,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7181 transitions. [2022-01-19 07:13:43,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:13:43,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7181 transitions. [2022-01-19 07:13:43,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.57777777777778) internal successors, (7181), 45 states have internal predecessors, (7181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:43,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:43,043 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:43,043 INFO L186 Difference]: Start difference. First operand has 604 places, 350 transitions, 3883 flow. Second operand 45 states and 7181 transitions. [2022-01-19 07:13:43,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 618 places, 495 transitions, 8316 flow [2022-01-19 07:13:43,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 495 transitions, 7481 flow, removed 383 selfloop flow, removed 29 redundant places. [2022-01-19 07:13:43,264 INFO L242 Difference]: Finished difference. Result has 624 places, 369 transitions, 4406 flow [2022-01-19 07:13:43,264 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3692, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=4406, PETRI_PLACES=624, PETRI_TRANSITIONS=369} [2022-01-19 07:13:43,264 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 437 predicate places. [2022-01-19 07:13:43,265 INFO L470 AbstractCegarLoop]: Abstraction has has 624 places, 369 transitions, 4406 flow [2022-01-19 07:13:43,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:43,265 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:13:43,265 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:13:43,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable368 [2022-01-19 07:13:43,265 INFO L402 AbstractCegarLoop]: === Iteration 370 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:13:43,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:13:43,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1492905002, now seen corresponding path program 66 times [2022-01-19 07:13:43,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:13:43,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527768901] [2022-01-19 07:13:43,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:13:43,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:13:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:13:43,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:13:43,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:13:43,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527768901] [2022-01-19 07:13:43,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527768901] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:13:43,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:13:43,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:13:43,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209395465] [2022-01-19 07:13:43,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:13:43,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:13:43,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:13:43,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:13:43,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:13:43,365 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:13:43,366 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 624 places, 369 transitions, 4406 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:43,366 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:13:43,366 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:13:43,366 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:13:44,492 INFO L129 PetriNetUnfolder]: 507/1993 cut-off events. [2022-01-19 07:13:44,493 INFO L130 PetriNetUnfolder]: For 49440/49456 co-relation queries the response was YES. [2022-01-19 07:13:44,532 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14986 conditions, 1993 events. 507/1993 cut-off events. For 49440/49456 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 14267 event pairs, 261 based on Foata normal form. 1/1931 useless extension candidates. Maximal degree in co-relation 14682. Up to 459 conditions per place. [2022-01-19 07:13:44,539 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 213 selfloop transitions, 75 changer transitions 76/505 dead transitions. [2022-01-19 07:13:44,539 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 505 transitions, 8664 flow [2022-01-19 07:13:44,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-19 07:13:44,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-01-19 07:13:44,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7026 transitions. [2022-01-19 07:13:44,542 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7603896103896104 [2022-01-19 07:13:44,542 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7026 transitions. [2022-01-19 07:13:44,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7026 transitions. [2022-01-19 07:13:44,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:13:44,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7026 transitions. [2022-01-19 07:13:44,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.6818181818182) internal successors, (7026), 44 states have internal predecessors, (7026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:44,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:44,551 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:44,551 INFO L186 Difference]: Start difference. First operand has 624 places, 369 transitions, 4406 flow. Second operand 44 states and 7026 transitions. [2022-01-19 07:13:44,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 505 transitions, 8664 flow [2022-01-19 07:13:44,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 604 places, 505 transitions, 8015 flow, removed 312 selfloop flow, removed 31 redundant places. [2022-01-19 07:13:44,776 INFO L242 Difference]: Finished difference. Result has 639 places, 379 transitions, 4818 flow [2022-01-19 07:13:44,776 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4246, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=4818, PETRI_PLACES=639, PETRI_TRANSITIONS=379} [2022-01-19 07:13:44,776 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 452 predicate places. [2022-01-19 07:13:44,776 INFO L470 AbstractCegarLoop]: Abstraction has has 639 places, 379 transitions, 4818 flow [2022-01-19 07:13:44,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:44,776 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:13:44,776 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:13:44,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable369 [2022-01-19 07:13:44,776 INFO L402 AbstractCegarLoop]: === Iteration 371 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:13:44,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:13:44,777 INFO L85 PathProgramCache]: Analyzing trace with hash -120890968, now seen corresponding path program 67 times [2022-01-19 07:13:44,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:13:44,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550262695] [2022-01-19 07:13:44,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:13:44,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:13:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:13:44,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:13:44,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:13:44,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550262695] [2022-01-19 07:13:44,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550262695] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:13:44,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:13:44,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:13:44,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365339167] [2022-01-19 07:13:44,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:13:44,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:13:44,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:13:44,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:13:44,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:13:44,886 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:13:44,887 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 639 places, 379 transitions, 4818 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:44,887 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:13:44,887 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:13:44,887 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:13:45,938 INFO L129 PetriNetUnfolder]: 532/2062 cut-off events. [2022-01-19 07:13:45,939 INFO L130 PetriNetUnfolder]: For 54574/54584 co-relation queries the response was YES. [2022-01-19 07:13:45,996 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15913 conditions, 2062 events. 532/2062 cut-off events. For 54574/54584 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 14807 event pairs, 263 based on Foata normal form. 1/2003 useless extension candidates. Maximal degree in co-relation 15604. Up to 459 conditions per place. [2022-01-19 07:13:46,006 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 214 selfloop transitions, 92 changer transitions 68/515 dead transitions. [2022-01-19 07:13:46,006 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 642 places, 515 transitions, 8973 flow [2022-01-19 07:13:46,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 07:13:46,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 07:13:46,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5605 transitions. [2022-01-19 07:13:46,009 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625850340136054 [2022-01-19 07:13:46,009 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5605 transitions. [2022-01-19 07:13:46,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5605 transitions. [2022-01-19 07:13:46,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:13:46,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5605 transitions. [2022-01-19 07:13:46,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 160.14285714285714) internal successors, (5605), 35 states have internal predecessors, (5605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:46,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:46,016 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:46,016 INFO L186 Difference]: Start difference. First operand has 639 places, 379 transitions, 4818 flow. Second operand 35 states and 5605 transitions. [2022-01-19 07:13:46,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 642 places, 515 transitions, 8973 flow [2022-01-19 07:13:46,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 613 places, 515 transitions, 8293 flow, removed 283 selfloop flow, removed 29 redundant places. [2022-01-19 07:13:46,308 INFO L242 Difference]: Finished difference. Result has 639 places, 398 transitions, 5358 flow [2022-01-19 07:13:46,309 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4550, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5358, PETRI_PLACES=639, PETRI_TRANSITIONS=398} [2022-01-19 07:13:46,309 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 452 predicate places. [2022-01-19 07:13:46,309 INFO L470 AbstractCegarLoop]: Abstraction has has 639 places, 398 transitions, 5358 flow [2022-01-19 07:13:46,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:46,309 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:13:46,309 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:13:46,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable370 [2022-01-19 07:13:46,310 INFO L402 AbstractCegarLoop]: === Iteration 372 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:13:46,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:13:46,310 INFO L85 PathProgramCache]: Analyzing trace with hash -383763530, now seen corresponding path program 68 times [2022-01-19 07:13:46,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:13:46,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385206742] [2022-01-19 07:13:46,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:13:46,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:13:46,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:13:46,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:13:46,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:13:46,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385206742] [2022-01-19 07:13:46,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385206742] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:13:46,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:13:46,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:13:46,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617196634] [2022-01-19 07:13:46,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:13:46,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:13:46,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:13:46,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:13:46,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:13:46,413 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:13:46,414 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 639 places, 398 transitions, 5358 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:46,414 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:13:46,414 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:13:46,414 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:13:47,568 INFO L129 PetriNetUnfolder]: 553/2091 cut-off events. [2022-01-19 07:13:47,569 INFO L130 PetriNetUnfolder]: For 55387/55416 co-relation queries the response was YES. [2022-01-19 07:13:47,611 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16417 conditions, 2091 events. 553/2091 cut-off events. For 55387/55416 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 15083 event pairs, 272 based on Foata normal form. 3/2031 useless extension candidates. Maximal degree in co-relation 16110. Up to 459 conditions per place. [2022-01-19 07:13:47,618 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 225 selfloop transitions, 91 changer transitions 65/522 dead transitions. [2022-01-19 07:13:47,618 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 655 places, 522 transitions, 9219 flow [2022-01-19 07:13:47,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:13:47,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:13:47,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6083 transitions. [2022-01-19 07:13:47,621 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.762280701754386 [2022-01-19 07:13:47,621 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6083 transitions. [2022-01-19 07:13:47,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6083 transitions. [2022-01-19 07:13:47,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:13:47,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6083 transitions. [2022-01-19 07:13:47,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.07894736842104) internal successors, (6083), 38 states have internal predecessors, (6083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:47,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:47,628 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:47,628 INFO L186 Difference]: Start difference. First operand has 639 places, 398 transitions, 5358 flow. Second operand 38 states and 6083 transitions. [2022-01-19 07:13:47,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 655 places, 522 transitions, 9219 flow [2022-01-19 07:13:47,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 634 places, 522 transitions, 8615 flow, removed 211 selfloop flow, removed 21 redundant places. [2022-01-19 07:13:47,895 INFO L242 Difference]: Finished difference. Result has 659 places, 413 transitions, 5736 flow [2022-01-19 07:13:47,896 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5028, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=5736, PETRI_PLACES=659, PETRI_TRANSITIONS=413} [2022-01-19 07:13:47,896 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 472 predicate places. [2022-01-19 07:13:47,896 INFO L470 AbstractCegarLoop]: Abstraction has has 659 places, 413 transitions, 5736 flow [2022-01-19 07:13:47,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:47,896 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:13:47,896 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:13:47,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable371 [2022-01-19 07:13:47,896 INFO L402 AbstractCegarLoop]: === Iteration 373 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:13:47,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:13:47,897 INFO L85 PathProgramCache]: Analyzing trace with hash -747827044, now seen corresponding path program 69 times [2022-01-19 07:13:47,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:13:47,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455979985] [2022-01-19 07:13:47,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:13:47,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:13:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:13:48,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:13:48,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:13:48,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455979985] [2022-01-19 07:13:48,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455979985] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:13:48,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:13:48,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:13:48,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379637946] [2022-01-19 07:13:48,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:13:48,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:13:48,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:13:48,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:13:48,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:13:48,011 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:13:48,012 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 659 places, 413 transitions, 5736 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:48,012 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:13:48,012 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:13:48,012 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:13:49,165 INFO L129 PetriNetUnfolder]: 577/2178 cut-off events. [2022-01-19 07:13:49,165 INFO L130 PetriNetUnfolder]: For 67947/67970 co-relation queries the response was YES. [2022-01-19 07:13:49,205 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17829 conditions, 2178 events. 577/2178 cut-off events. For 67947/67970 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 15992 event pairs, 302 based on Foata normal form. 3/2117 useless extension candidates. Maximal degree in co-relation 17514. Up to 459 conditions per place. [2022-01-19 07:13:49,212 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 228 selfloop transitions, 101 changer transitions 65/535 dead transitions. [2022-01-19 07:13:49,212 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 670 places, 535 transitions, 9804 flow [2022-01-19 07:13:49,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 07:13:49,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 07:13:49,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5770 transitions. [2022-01-19 07:13:49,214 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7632275132275133 [2022-01-19 07:13:49,214 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5770 transitions. [2022-01-19 07:13:49,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5770 transitions. [2022-01-19 07:13:49,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:13:49,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5770 transitions. [2022-01-19 07:13:49,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.27777777777777) internal successors, (5770), 36 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:49,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:49,221 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:49,221 INFO L186 Difference]: Start difference. First operand has 659 places, 413 transitions, 5736 flow. Second operand 36 states and 5770 transitions. [2022-01-19 07:13:49,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 670 places, 535 transitions, 9804 flow [2022-01-19 07:13:49,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 649 places, 535 transitions, 9234 flow, removed 228 selfloop flow, removed 21 redundant places. [2022-01-19 07:13:49,501 INFO L242 Difference]: Finished difference. Result has 674 places, 433 transitions, 6460 flow [2022-01-19 07:13:49,501 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5473, PETRI_DIFFERENCE_MINUEND_PLACES=614, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=6460, PETRI_PLACES=674, PETRI_TRANSITIONS=433} [2022-01-19 07:13:49,501 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 487 predicate places. [2022-01-19 07:13:49,501 INFO L470 AbstractCegarLoop]: Abstraction has has 674 places, 433 transitions, 6460 flow [2022-01-19 07:13:49,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:49,501 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:13:49,502 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:13:49,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable372 [2022-01-19 07:13:49,502 INFO L402 AbstractCegarLoop]: === Iteration 374 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:13:49,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:13:49,502 INFO L85 PathProgramCache]: Analyzing trace with hash 24107932, now seen corresponding path program 70 times [2022-01-19 07:13:49,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:13:49,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958035237] [2022-01-19 07:13:49,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:13:49,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:13:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:13:49,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:13:49,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:13:49,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958035237] [2022-01-19 07:13:49,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958035237] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:13:49,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:13:49,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:13:49,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308151915] [2022-01-19 07:13:49,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:13:49,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:13:49,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:13:49,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:13:49,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:13:49,601 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:13:49,602 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 674 places, 433 transitions, 6460 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:49,602 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:13:49,602 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:13:49,602 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:13:50,747 INFO L129 PetriNetUnfolder]: 603/2256 cut-off events. [2022-01-19 07:13:50,747 INFO L130 PetriNetUnfolder]: For 73553/73571 co-relation queries the response was YES. [2022-01-19 07:13:50,806 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18849 conditions, 2256 events. 603/2256 cut-off events. For 73553/73571 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 16781 event pairs, 290 based on Foata normal form. 1/2191 useless extension candidates. Maximal degree in co-relation 18527. Up to 459 conditions per place. [2022-01-19 07:13:50,814 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 249 selfloop transitions, 108 changer transitions 68/566 dead transitions. [2022-01-19 07:13:50,814 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 687 places, 566 transitions, 10891 flow [2022-01-19 07:13:50,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 07:13:50,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 07:13:50,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5766 transitions. [2022-01-19 07:13:50,817 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7626984126984127 [2022-01-19 07:13:50,817 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5766 transitions. [2022-01-19 07:13:50,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5766 transitions. [2022-01-19 07:13:50,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:13:50,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5766 transitions. [2022-01-19 07:13:50,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.16666666666666) internal successors, (5766), 36 states have internal predecessors, (5766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:50,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:50,824 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:50,824 INFO L186 Difference]: Start difference. First operand has 674 places, 433 transitions, 6460 flow. Second operand 36 states and 5766 transitions. [2022-01-19 07:13:50,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 687 places, 566 transitions, 10891 flow [2022-01-19 07:13:51,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 668 places, 566 transitions, 10309 flow, removed 229 selfloop flow, removed 19 redundant places. [2022-01-19 07:13:51,176 INFO L242 Difference]: Finished difference. Result has 693 places, 455 transitions, 7205 flow [2022-01-19 07:13:51,176 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6096, PETRI_DIFFERENCE_MINUEND_PLACES=633, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=7205, PETRI_PLACES=693, PETRI_TRANSITIONS=455} [2022-01-19 07:13:51,176 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 506 predicate places. [2022-01-19 07:13:51,177 INFO L470 AbstractCegarLoop]: Abstraction has has 693 places, 455 transitions, 7205 flow [2022-01-19 07:13:51,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:51,177 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:13:51,177 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:13:51,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable373 [2022-01-19 07:13:51,177 INFO L402 AbstractCegarLoop]: === Iteration 375 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:13:51,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:13:51,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1246694750, now seen corresponding path program 71 times [2022-01-19 07:13:51,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:13:51,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417430947] [2022-01-19 07:13:51,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:13:51,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:13:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:13:51,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:13:51,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:13:51,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417430947] [2022-01-19 07:13:51,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417430947] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:13:51,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:13:51,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:13:51,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689564214] [2022-01-19 07:13:51,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:13:51,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:13:51,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:13:51,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:13:51,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:13:51,281 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:13:51,281 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 693 places, 455 transitions, 7205 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:51,281 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:13:51,282 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:13:51,282 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:13:52,459 INFO L129 PetriNetUnfolder]: 596/2257 cut-off events. [2022-01-19 07:13:52,459 INFO L130 PetriNetUnfolder]: For 76502/76524 co-relation queries the response was YES. [2022-01-19 07:13:52,512 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18884 conditions, 2257 events. 596/2257 cut-off events. For 76502/76524 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 16871 event pairs, 290 based on Foata normal form. 3/2194 useless extension candidates. Maximal degree in co-relation 18553. Up to 459 conditions per place. [2022-01-19 07:13:52,521 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 253 selfloop transitions, 109 changer transitions 66/569 dead transitions. [2022-01-19 07:13:52,521 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 707 places, 569 transitions, 11331 flow [2022-01-19 07:13:52,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 07:13:52,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 07:13:52,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5929 transitions. [2022-01-19 07:13:52,524 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763063063063063 [2022-01-19 07:13:52,524 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5929 transitions. [2022-01-19 07:13:52,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5929 transitions. [2022-01-19 07:13:52,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:13:52,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5929 transitions. [2022-01-19 07:13:52,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.24324324324326) internal successors, (5929), 37 states have internal predecessors, (5929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:52,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:52,531 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:52,531 INFO L186 Difference]: Start difference. First operand has 693 places, 455 transitions, 7205 flow. Second operand 37 states and 5929 transitions. [2022-01-19 07:13:52,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 707 places, 569 transitions, 11331 flow [2022-01-19 07:13:52,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 688 places, 569 transitions, 10538 flow, removed 339 selfloop flow, removed 19 redundant places. [2022-01-19 07:13:52,921 INFO L242 Difference]: Finished difference. Result has 712 places, 466 transitions, 7521 flow [2022-01-19 07:13:52,921 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6814, PETRI_DIFFERENCE_MINUEND_PLACES=652, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=7521, PETRI_PLACES=712, PETRI_TRANSITIONS=466} [2022-01-19 07:13:52,921 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 525 predicate places. [2022-01-19 07:13:52,921 INFO L470 AbstractCegarLoop]: Abstraction has has 712 places, 466 transitions, 7521 flow [2022-01-19 07:13:52,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:52,922 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:13:52,922 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:13:52,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable374 [2022-01-19 07:13:52,922 INFO L402 AbstractCegarLoop]: === Iteration 376 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:13:52,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:13:52,922 INFO L85 PathProgramCache]: Analyzing trace with hash -986792438, now seen corresponding path program 72 times [2022-01-19 07:13:52,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:13:52,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377638623] [2022-01-19 07:13:52,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:13:52,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:13:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:13:53,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:13:53,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:13:53,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377638623] [2022-01-19 07:13:53,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377638623] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:13:53,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:13:53,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:13:53,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276488143] [2022-01-19 07:13:53,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:13:53,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:13:53,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:13:53,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:13:53,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:13:53,024 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:13:53,025 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 712 places, 466 transitions, 7521 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:53,025 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:13:53,025 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:13:53,025 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:13:54,302 INFO L129 PetriNetUnfolder]: 587/2248 cut-off events. [2022-01-19 07:13:54,302 INFO L130 PetriNetUnfolder]: For 75179/75207 co-relation queries the response was YES. [2022-01-19 07:13:54,344 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18539 conditions, 2248 events. 587/2248 cut-off events. For 75179/75207 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 16873 event pairs, 235 based on Foata normal form. 9/2196 useless extension candidates. Maximal degree in co-relation 18200. Up to 459 conditions per place. [2022-01-19 07:13:54,351 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 259 selfloop transitions, 116 changer transitions 66/582 dead transitions. [2022-01-19 07:13:54,351 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 726 places, 582 transitions, 11659 flow [2022-01-19 07:13:54,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:13:54,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:13:54,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6075 transitions. [2022-01-19 07:13:54,357 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7612781954887218 [2022-01-19 07:13:54,357 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6075 transitions. [2022-01-19 07:13:54,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6075 transitions. [2022-01-19 07:13:54,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:13:54,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6075 transitions. [2022-01-19 07:13:54,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.8684210526316) internal successors, (6075), 38 states have internal predecessors, (6075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:54,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:54,365 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:54,365 INFO L186 Difference]: Start difference. First operand has 712 places, 466 transitions, 7521 flow. Second operand 38 states and 6075 transitions. [2022-01-19 07:13:54,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 726 places, 582 transitions, 11659 flow [2022-01-19 07:13:54,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 705 places, 582 transitions, 11043 flow, removed 239 selfloop flow, removed 21 redundant places. [2022-01-19 07:13:54,758 INFO L242 Difference]: Finished difference. Result has 727 places, 477 transitions, 7851 flow [2022-01-19 07:13:54,758 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7165, PETRI_DIFFERENCE_MINUEND_PLACES=668, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=7851, PETRI_PLACES=727, PETRI_TRANSITIONS=477} [2022-01-19 07:13:54,759 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 540 predicate places. [2022-01-19 07:13:54,759 INFO L470 AbstractCegarLoop]: Abstraction has has 727 places, 477 transitions, 7851 flow [2022-01-19 07:13:54,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:54,759 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:13:54,759 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:13:54,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable375 [2022-01-19 07:13:54,759 INFO L402 AbstractCegarLoop]: === Iteration 377 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:13:54,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:13:54,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1323900006, now seen corresponding path program 73 times [2022-01-19 07:13:54,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:13:54,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874824518] [2022-01-19 07:13:54,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:13:54,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:13:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:13:54,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:13:54,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:13:54,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874824518] [2022-01-19 07:13:54,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874824518] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:13:54,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:13:54,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:13:54,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643678497] [2022-01-19 07:13:54,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:13:54,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:13:54,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:13:54,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:13:54,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:13:54,875 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:13:54,875 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 727 places, 477 transitions, 7851 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:54,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:13:54,876 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:13:54,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:13:56,117 INFO L129 PetriNetUnfolder]: 607/2301 cut-off events. [2022-01-19 07:13:56,117 INFO L130 PetriNetUnfolder]: For 82807/82833 co-relation queries the response was YES. [2022-01-19 07:13:56,170 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19414 conditions, 2301 events. 607/2301 cut-off events. For 82807/82833 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 17430 event pairs, 259 based on Foata normal form. 11/2245 useless extension candidates. Maximal degree in co-relation 19071. Up to 459 conditions per place. [2022-01-19 07:13:56,178 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 273 selfloop transitions, 117 changer transitions 66/597 dead transitions. [2022-01-19 07:13:56,178 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 739 places, 597 transitions, 12206 flow [2022-01-19 07:13:56,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 07:13:56,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 07:13:56,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5921 transitions. [2022-01-19 07:13:56,181 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.762033462033462 [2022-01-19 07:13:56,181 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5921 transitions. [2022-01-19 07:13:56,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5921 transitions. [2022-01-19 07:13:56,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:13:56,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5921 transitions. [2022-01-19 07:13:56,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.02702702702703) internal successors, (5921), 37 states have internal predecessors, (5921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:56,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:56,188 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:56,188 INFO L186 Difference]: Start difference. First operand has 727 places, 477 transitions, 7851 flow. Second operand 37 states and 5921 transitions. [2022-01-19 07:13:56,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 739 places, 597 transitions, 12206 flow [2022-01-19 07:13:56,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 718 places, 597 transitions, 11638 flow, removed 221 selfloop flow, removed 21 redundant places. [2022-01-19 07:13:56,632 INFO L242 Difference]: Finished difference. Result has 743 places, 494 transitions, 8429 flow [2022-01-19 07:13:56,632 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7519, PETRI_DIFFERENCE_MINUEND_PLACES=682, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=8429, PETRI_PLACES=743, PETRI_TRANSITIONS=494} [2022-01-19 07:13:56,633 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 556 predicate places. [2022-01-19 07:13:56,633 INFO L470 AbstractCegarLoop]: Abstraction has has 743 places, 494 transitions, 8429 flow [2022-01-19 07:13:56,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:56,633 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:13:56,633 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:13:56,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable376 [2022-01-19 07:13:56,633 INFO L402 AbstractCegarLoop]: === Iteration 378 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:13:56,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:13:56,633 INFO L85 PathProgramCache]: Analyzing trace with hash 784382108, now seen corresponding path program 74 times [2022-01-19 07:13:56,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:13:56,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764983448] [2022-01-19 07:13:56,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:13:56,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:13:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:13:56,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:13:56,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:13:56,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764983448] [2022-01-19 07:13:56,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764983448] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:13:56,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:13:56,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:13:56,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147208550] [2022-01-19 07:13:56,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:13:56,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:13:56,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:13:56,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:13:56,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:13:56,735 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:13:56,735 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 743 places, 494 transitions, 8429 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:56,735 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:13:56,735 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:13:56,735 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:13:58,039 INFO L129 PetriNetUnfolder]: 628/2390 cut-off events. [2022-01-19 07:13:58,039 INFO L130 PetriNetUnfolder]: For 94225/94252 co-relation queries the response was YES. [2022-01-19 07:13:58,108 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20771 conditions, 2390 events. 628/2390 cut-off events. For 94225/94252 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 18357 event pairs, 285 based on Foata normal form. 7/2331 useless extension candidates. Maximal degree in co-relation 20421. Up to 459 conditions per place. [2022-01-19 07:13:58,117 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 288 selfloop transitions, 117 changer transitions 64/610 dead transitions. [2022-01-19 07:13:58,117 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 757 places, 610 transitions, 12823 flow [2022-01-19 07:13:58,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:13:58,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:13:58,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6079 transitions. [2022-01-19 07:13:58,120 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7617794486215539 [2022-01-19 07:13:58,120 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6079 transitions. [2022-01-19 07:13:58,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6079 transitions. [2022-01-19 07:13:58,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:13:58,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6079 transitions. [2022-01-19 07:13:58,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.97368421052633) internal successors, (6079), 38 states have internal predecessors, (6079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:58,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:58,127 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:58,127 INFO L186 Difference]: Start difference. First operand has 743 places, 494 transitions, 8429 flow. Second operand 38 states and 6079 transitions. [2022-01-19 07:13:58,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 757 places, 610 transitions, 12823 flow [2022-01-19 07:13:58,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 736 places, 610 transitions, 12263 flow, removed 219 selfloop flow, removed 21 redundant places. [2022-01-19 07:13:58,645 INFO L242 Difference]: Finished difference. Result has 758 places, 511 transitions, 9002 flow [2022-01-19 07:13:58,645 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8098, PETRI_DIFFERENCE_MINUEND_PLACES=699, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9002, PETRI_PLACES=758, PETRI_TRANSITIONS=511} [2022-01-19 07:13:58,646 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 571 predicate places. [2022-01-19 07:13:58,646 INFO L470 AbstractCegarLoop]: Abstraction has has 758 places, 511 transitions, 9002 flow [2022-01-19 07:13:58,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:58,646 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:13:58,646 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:13:58,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable377 [2022-01-19 07:13:58,646 INFO L402 AbstractCegarLoop]: === Iteration 379 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:13:58,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:13:58,647 INFO L85 PathProgramCache]: Analyzing trace with hash -66473082, now seen corresponding path program 75 times [2022-01-19 07:13:58,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:13:58,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008799579] [2022-01-19 07:13:58,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:13:58,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:13:58,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:13:58,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:13:58,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:13:58,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008799579] [2022-01-19 07:13:58,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008799579] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:13:58,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:13:58,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:13:58,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428806287] [2022-01-19 07:13:58,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:13:58,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:13:58,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:13:58,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:13:58,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:13:58,755 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:13:58,756 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 758 places, 511 transitions, 9002 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:13:58,756 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:13:58,756 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:13:58,756 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:14:00,040 INFO L129 PetriNetUnfolder]: 622/2357 cut-off events. [2022-01-19 07:14:00,041 INFO L130 PetriNetUnfolder]: For 94815/94848 co-relation queries the response was YES. [2022-01-19 07:14:00,106 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20415 conditions, 2357 events. 622/2357 cut-off events. For 94815/94848 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 18029 event pairs, 255 based on Foata normal form. 15/2306 useless extension candidates. Maximal degree in co-relation 20061. Up to 459 conditions per place. [2022-01-19 07:14:00,116 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 297 selfloop transitions, 118 changer transitions 66/622 dead transitions. [2022-01-19 07:14:00,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 771 places, 622 transitions, 13323 flow [2022-01-19 07:14:00,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:14:00,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:14:00,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6081 transitions. [2022-01-19 07:14:00,118 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.76203007518797 [2022-01-19 07:14:00,119 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6081 transitions. [2022-01-19 07:14:00,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6081 transitions. [2022-01-19 07:14:00,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:14:00,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6081 transitions. [2022-01-19 07:14:00,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.02631578947367) internal successors, (6081), 38 states have internal predecessors, (6081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:00,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:00,126 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:00,126 INFO L186 Difference]: Start difference. First operand has 758 places, 511 transitions, 9002 flow. Second operand 38 states and 6081 transitions. [2022-01-19 07:14:00,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 771 places, 622 transitions, 13323 flow [2022-01-19 07:14:00,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 753 places, 622 transitions, 12732 flow, removed 232 selfloop flow, removed 18 redundant places. [2022-01-19 07:14:00,664 INFO L242 Difference]: Finished difference. Result has 777 places, 518 transitions, 9220 flow [2022-01-19 07:14:00,664 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8661, PETRI_DIFFERENCE_MINUEND_PLACES=716, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9220, PETRI_PLACES=777, PETRI_TRANSITIONS=518} [2022-01-19 07:14:00,664 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 590 predicate places. [2022-01-19 07:14:00,665 INFO L470 AbstractCegarLoop]: Abstraction has has 777 places, 518 transitions, 9220 flow [2022-01-19 07:14:00,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:00,665 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:14:00,665 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:14:00,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable378 [2022-01-19 07:14:00,665 INFO L402 AbstractCegarLoop]: === Iteration 380 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:14:00,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:14:00,665 INFO L85 PathProgramCache]: Analyzing trace with hash 71637652, now seen corresponding path program 76 times [2022-01-19 07:14:00,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:14:00,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122217624] [2022-01-19 07:14:00,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:14:00,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:14:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:14:00,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:14:00,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:14:00,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122217624] [2022-01-19 07:14:00,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122217624] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:14:00,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:14:00,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:14:00,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134838831] [2022-01-19 07:14:00,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:14:00,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:14:00,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:14:00,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:14:00,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:14:00,766 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:14:00,766 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 777 places, 518 transitions, 9220 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:00,767 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:14:00,767 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:14:00,767 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:14:02,150 INFO L129 PetriNetUnfolder]: 617/2393 cut-off events. [2022-01-19 07:14:02,150 INFO L130 PetriNetUnfolder]: For 96939/96972 co-relation queries the response was YES. [2022-01-19 07:14:02,234 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20571 conditions, 2393 events. 617/2393 cut-off events. For 96939/96972 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 18530 event pairs, 282 based on Foata normal form. 11/2337 useless extension candidates. Maximal degree in co-relation 20208. Up to 459 conditions per place. [2022-01-19 07:14:02,244 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 303 selfloop transitions, 116 changer transitions 66/626 dead transitions. [2022-01-19 07:14:02,244 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 789 places, 626 transitions, 13505 flow [2022-01-19 07:14:02,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 07:14:02,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 07:14:02,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5925 transitions. [2022-01-19 07:14:02,248 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625482625482626 [2022-01-19 07:14:02,248 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5925 transitions. [2022-01-19 07:14:02,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5925 transitions. [2022-01-19 07:14:02,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:14:02,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5925 transitions. [2022-01-19 07:14:02,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.13513513513513) internal successors, (5925), 37 states have internal predecessors, (5925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:02,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:02,257 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:02,257 INFO L186 Difference]: Start difference. First operand has 777 places, 518 transitions, 9220 flow. Second operand 37 states and 5925 transitions. [2022-01-19 07:14:02,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 789 places, 626 transitions, 13505 flow [2022-01-19 07:14:02,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 768 places, 626 transitions, 12986 flow, removed 211 selfloop flow, removed 21 redundant places. [2022-01-19 07:14:02,902 INFO L242 Difference]: Finished difference. Result has 792 places, 526 transitions, 9514 flow [2022-01-19 07:14:02,902 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8920, PETRI_DIFFERENCE_MINUEND_PLACES=732, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=9514, PETRI_PLACES=792, PETRI_TRANSITIONS=526} [2022-01-19 07:14:02,902 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 605 predicate places. [2022-01-19 07:14:02,902 INFO L470 AbstractCegarLoop]: Abstraction has has 792 places, 526 transitions, 9514 flow [2022-01-19 07:14:02,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:02,903 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:14:02,903 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:14:02,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable379 [2022-01-19 07:14:02,903 INFO L402 AbstractCegarLoop]: === Iteration 381 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:14:02,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:14:02,903 INFO L85 PathProgramCache]: Analyzing trace with hash 2065512434, now seen corresponding path program 77 times [2022-01-19 07:14:02,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:14:02,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035361499] [2022-01-19 07:14:02,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:14:02,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:14:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:14:03,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:14:03,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:14:03,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035361499] [2022-01-19 07:14:03,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035361499] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:14:03,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:14:03,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:14:03,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223555974] [2022-01-19 07:14:03,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:14:03,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:14:03,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:14:03,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:14:03,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:14:03,018 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:14:03,019 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 792 places, 526 transitions, 9514 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:03,019 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:14:03,019 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:14:03,019 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:14:04,555 INFO L129 PetriNetUnfolder]: 660/2541 cut-off events. [2022-01-19 07:14:04,555 INFO L130 PetriNetUnfolder]: For 104418/104449 co-relation queries the response was YES. [2022-01-19 07:14:04,712 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21884 conditions, 2541 events. 660/2541 cut-off events. For 104418/104449 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 20169 event pairs, 246 based on Foata normal form. 3/2487 useless extension candidates. Maximal degree in co-relation 21516. Up to 461 conditions per place. [2022-01-19 07:14:04,720 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 313 selfloop transitions, 181 changer transitions 90/725 dead transitions. [2022-01-19 07:14:04,720 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 814 places, 725 transitions, 15935 flow [2022-01-19 07:14:04,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 07:14:04,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 07:14:04,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7341 transitions. [2022-01-19 07:14:04,723 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7599378881987577 [2022-01-19 07:14:04,723 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7341 transitions. [2022-01-19 07:14:04,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7341 transitions. [2022-01-19 07:14:04,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:14:04,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7341 transitions. [2022-01-19 07:14:04,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.58695652173913) internal successors, (7341), 46 states have internal predecessors, (7341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:04,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:04,732 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:04,732 INFO L186 Difference]: Start difference. First operand has 792 places, 526 transitions, 9514 flow. Second operand 46 states and 7341 transitions. [2022-01-19 07:14:04,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 814 places, 725 transitions, 15935 flow [2022-01-19 07:14:05,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 794 places, 725 transitions, 15369 flow, removed 192 selfloop flow, removed 20 redundant places. [2022-01-19 07:14:05,405 INFO L242 Difference]: Finished difference. Result has 827 places, 552 transitions, 10314 flow [2022-01-19 07:14:05,406 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9156, PETRI_DIFFERENCE_MINUEND_PLACES=749, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=10314, PETRI_PLACES=827, PETRI_TRANSITIONS=552} [2022-01-19 07:14:05,406 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 640 predicate places. [2022-01-19 07:14:05,406 INFO L470 AbstractCegarLoop]: Abstraction has has 827 places, 552 transitions, 10314 flow [2022-01-19 07:14:05,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:05,406 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:14:05,406 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:14:05,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable380 [2022-01-19 07:14:05,406 INFO L402 AbstractCegarLoop]: === Iteration 382 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:14:05,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:14:05,407 INFO L85 PathProgramCache]: Analyzing trace with hash -2116882112, now seen corresponding path program 78 times [2022-01-19 07:14:05,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:14:05,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708458704] [2022-01-19 07:14:05,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:14:05,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:14:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:14:05,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:14:05,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:14:05,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708458704] [2022-01-19 07:14:05,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708458704] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:14:05,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:14:05,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:14:05,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833218338] [2022-01-19 07:14:05,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:14:05,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:14:05,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:14:05,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:14:05,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:14:05,509 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:14:05,509 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 827 places, 552 transitions, 10314 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:05,509 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:14:05,509 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:14:05,510 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:14:07,123 INFO L129 PetriNetUnfolder]: 673/2541 cut-off events. [2022-01-19 07:14:07,124 INFO L130 PetriNetUnfolder]: For 100782/100801 co-relation queries the response was YES. [2022-01-19 07:14:07,205 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21778 conditions, 2541 events. 673/2541 cut-off events. For 100782/100801 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 19966 event pairs, 278 based on Foata normal form. 3/2477 useless extension candidates. Maximal degree in co-relation 21394. Up to 482 conditions per place. [2022-01-19 07:14:07,215 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 336 selfloop transitions, 159 changer transitions 105/741 dead transitions. [2022-01-19 07:14:07,215 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 836 places, 741 transitions, 16708 flow [2022-01-19 07:14:07,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-19 07:14:07,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-01-19 07:14:07,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6867 transitions. [2022-01-19 07:14:07,218 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7604651162790698 [2022-01-19 07:14:07,218 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6867 transitions. [2022-01-19 07:14:07,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6867 transitions. [2022-01-19 07:14:07,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:14:07,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6867 transitions. [2022-01-19 07:14:07,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 159.69767441860466) internal successors, (6867), 43 states have internal predecessors, (6867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:07,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:07,227 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:07,227 INFO L186 Difference]: Start difference. First operand has 827 places, 552 transitions, 10314 flow. Second operand 43 states and 6867 transitions. [2022-01-19 07:14:07,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 836 places, 741 transitions, 16708 flow [2022-01-19 07:14:07,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 808 places, 741 transitions, 16442 flow, removed 89 selfloop flow, removed 28 redundant places. [2022-01-19 07:14:07,916 INFO L242 Difference]: Finished difference. Result has 840 places, 573 transitions, 11389 flow [2022-01-19 07:14:07,916 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10134, PETRI_DIFFERENCE_MINUEND_PLACES=766, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=11389, PETRI_PLACES=840, PETRI_TRANSITIONS=573} [2022-01-19 07:14:07,916 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 653 predicate places. [2022-01-19 07:14:07,916 INFO L470 AbstractCegarLoop]: Abstraction has has 840 places, 573 transitions, 11389 flow [2022-01-19 07:14:07,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:07,917 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:14:07,917 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:14:07,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable381 [2022-01-19 07:14:07,917 INFO L402 AbstractCegarLoop]: === Iteration 383 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:14:07,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:14:07,917 INFO L85 PathProgramCache]: Analyzing trace with hash -51289292, now seen corresponding path program 79 times [2022-01-19 07:14:07,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:14:07,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329435125] [2022-01-19 07:14:07,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:14:07,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:14:07,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:14:08,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:14:08,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:14:08,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329435125] [2022-01-19 07:14:08,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329435125] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:14:08,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:14:08,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:14:08,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893813837] [2022-01-19 07:14:08,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:14:08,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:14:08,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:14:08,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:14:08,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:14:08,020 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:14:08,021 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 840 places, 573 transitions, 11389 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:08,021 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:14:08,021 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:14:08,021 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:14:09,618 INFO L129 PetriNetUnfolder]: 687/2587 cut-off events. [2022-01-19 07:14:09,618 INFO L130 PetriNetUnfolder]: For 110117/110140 co-relation queries the response was YES. [2022-01-19 07:14:09,700 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22774 conditions, 2587 events. 687/2587 cut-off events. For 110117/110140 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 20466 event pairs, 311 based on Foata normal form. 3/2516 useless extension candidates. Maximal degree in co-relation 22384. Up to 503 conditions per place. [2022-01-19 07:14:09,710 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 288 selfloop transitions, 196 changer transitions 81/706 dead transitions. [2022-01-19 07:14:09,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 854 places, 706 transitions, 15972 flow [2022-01-19 07:14:09,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 07:14:09,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 07:14:09,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7187 transitions. [2022-01-19 07:14:09,713 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7605291005291005 [2022-01-19 07:14:09,713 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7187 transitions. [2022-01-19 07:14:09,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7187 transitions. [2022-01-19 07:14:09,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:14:09,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7187 transitions. [2022-01-19 07:14:09,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.7111111111111) internal successors, (7187), 45 states have internal predecessors, (7187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:09,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:09,722 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:09,722 INFO L186 Difference]: Start difference. First operand has 840 places, 573 transitions, 11389 flow. Second operand 45 states and 7187 transitions. [2022-01-19 07:14:09,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 854 places, 706 transitions, 15972 flow [2022-01-19 07:14:10,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 816 places, 706 transitions, 15181 flow, removed 189 selfloop flow, removed 38 redundant places. [2022-01-19 07:14:10,529 INFO L242 Difference]: Finished difference. Result has 850 places, 590 transitions, 11813 flow [2022-01-19 07:14:10,529 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10786, PETRI_DIFFERENCE_MINUEND_PLACES=772, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=11813, PETRI_PLACES=850, PETRI_TRANSITIONS=590} [2022-01-19 07:14:10,529 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 663 predicate places. [2022-01-19 07:14:10,529 INFO L470 AbstractCegarLoop]: Abstraction has has 850 places, 590 transitions, 11813 flow [2022-01-19 07:14:10,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:10,529 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:14:10,529 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:14:10,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable382 [2022-01-19 07:14:10,530 INFO L402 AbstractCegarLoop]: === Iteration 384 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:14:10,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:14:10,530 INFO L85 PathProgramCache]: Analyzing trace with hash 978492314, now seen corresponding path program 80 times [2022-01-19 07:14:10,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:14:10,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745790070] [2022-01-19 07:14:10,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:14:10,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:14:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:14:10,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:14:10,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:14:10,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745790070] [2022-01-19 07:14:10,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745790070] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:14:10,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:14:10,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:14:10,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932518356] [2022-01-19 07:14:10,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:14:10,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:14:10,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:14:10,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:14:10,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:14:10,638 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:14:10,639 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 850 places, 590 transitions, 11813 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:10,639 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:14:10,639 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:14:10,639 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:14:12,205 INFO L129 PetriNetUnfolder]: 682/2545 cut-off events. [2022-01-19 07:14:12,205 INFO L130 PetriNetUnfolder]: For 98019/98038 co-relation queries the response was YES. [2022-01-19 07:14:12,272 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22138 conditions, 2545 events. 682/2545 cut-off events. For 98019/98038 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 20006 event pairs, 292 based on Foata normal form. 3/2475 useless extension candidates. Maximal degree in co-relation 21747. Up to 499 conditions per place. [2022-01-19 07:14:12,281 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 349 selfloop transitions, 151 changer transitions 93/734 dead transitions. [2022-01-19 07:14:12,281 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 861 places, 734 transitions, 17069 flow [2022-01-19 07:14:12,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-19 07:14:12,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-01-19 07:14:12,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7032 transitions. [2022-01-19 07:14:12,284 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7610389610389611 [2022-01-19 07:14:12,285 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7032 transitions. [2022-01-19 07:14:12,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7032 transitions. [2022-01-19 07:14:12,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:14:12,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7032 transitions. [2022-01-19 07:14:12,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.8181818181818) internal successors, (7032), 44 states have internal predecessors, (7032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:12,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:12,293 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:12,293 INFO L186 Difference]: Start difference. First operand has 850 places, 590 transitions, 11813 flow. Second operand 44 states and 7032 transitions. [2022-01-19 07:14:12,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 861 places, 734 transitions, 17069 flow [2022-01-19 07:14:12,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 829 places, 734 transitions, 16482 flow, removed 185 selfloop flow, removed 32 redundant places. [2022-01-19 07:14:12,987 INFO L242 Difference]: Finished difference. Result has 861 places, 597 transitions, 12225 flow [2022-01-19 07:14:12,987 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11400, PETRI_DIFFERENCE_MINUEND_PLACES=786, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=12225, PETRI_PLACES=861, PETRI_TRANSITIONS=597} [2022-01-19 07:14:12,988 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 674 predicate places. [2022-01-19 07:14:12,988 INFO L470 AbstractCegarLoop]: Abstraction has has 861 places, 597 transitions, 12225 flow [2022-01-19 07:14:12,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:12,988 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:14:12,988 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:14:12,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable383 [2022-01-19 07:14:12,988 INFO L402 AbstractCegarLoop]: === Iteration 385 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:14:12,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:14:12,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1168002550, now seen corresponding path program 81 times [2022-01-19 07:14:12,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:14:12,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103453462] [2022-01-19 07:14:12,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:14:12,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:14:12,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:14:13,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:14:13,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:14:13,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103453462] [2022-01-19 07:14:13,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103453462] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:14:13,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:14:13,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:14:13,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223726044] [2022-01-19 07:14:13,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:14:13,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:14:13,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:14:13,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:14:13,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:14:13,102 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:14:13,102 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 861 places, 597 transitions, 12225 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:13,103 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:14:13,103 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:14:13,103 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:14:14,598 INFO L129 PetriNetUnfolder]: 677/2618 cut-off events. [2022-01-19 07:14:14,598 INFO L130 PetriNetUnfolder]: For 96046/96054 co-relation queries the response was YES. [2022-01-19 07:14:14,682 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22222 conditions, 2618 events. 677/2618 cut-off events. For 96046/96054 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 20997 event pairs, 307 based on Foata normal form. 1/2543 useless extension candidates. Maximal degree in co-relation 21828. Up to 520 conditions per place. [2022-01-19 07:14:14,692 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 334 selfloop transitions, 165 changer transitions 75/715 dead transitions. [2022-01-19 07:14:14,692 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 865 places, 715 transitions, 16365 flow [2022-01-19 07:14:14,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 07:14:14,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 07:14:14,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5774 transitions. [2022-01-19 07:14:14,694 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7637566137566137 [2022-01-19 07:14:14,694 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5774 transitions. [2022-01-19 07:14:14,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5774 transitions. [2022-01-19 07:14:14,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:14:14,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5774 transitions. [2022-01-19 07:14:14,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.38888888888889) internal successors, (5774), 36 states have internal predecessors, (5774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:14,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:14,702 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:14,702 INFO L186 Difference]: Start difference. First operand has 861 places, 597 transitions, 12225 flow. Second operand 36 states and 5774 transitions. [2022-01-19 07:14:14,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 865 places, 715 transitions, 16365 flow [2022-01-19 07:14:15,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 825 places, 715 transitions, 15626 flow, removed 165 selfloop flow, removed 40 redundant places. [2022-01-19 07:14:15,395 INFO L242 Difference]: Finished difference. Result has 848 places, 613 transitions, 12509 flow [2022-01-19 07:14:15,395 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11592, PETRI_DIFFERENCE_MINUEND_PLACES=790, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=12509, PETRI_PLACES=848, PETRI_TRANSITIONS=613} [2022-01-19 07:14:15,396 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 661 predicate places. [2022-01-19 07:14:15,396 INFO L470 AbstractCegarLoop]: Abstraction has has 848 places, 613 transitions, 12509 flow [2022-01-19 07:14:15,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:15,396 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:14:15,396 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:14:15,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable384 [2022-01-19 07:14:15,396 INFO L402 AbstractCegarLoop]: === Iteration 386 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:14:15,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:14:15,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1386524382, now seen corresponding path program 82 times [2022-01-19 07:14:15,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:14:15,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530278732] [2022-01-19 07:14:15,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:14:15,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:14:15,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:14:15,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:14:15,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:14:15,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530278732] [2022-01-19 07:14:15,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530278732] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:14:15,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:14:15,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:14:15,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438952103] [2022-01-19 07:14:15,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:14:15,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:14:15,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:14:15,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:14:15,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:14:15,494 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:14:15,495 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 848 places, 613 transitions, 12509 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:15,495 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:14:15,495 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:14:15,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:14:16,973 INFO L129 PetriNetUnfolder]: 680/2595 cut-off events. [2022-01-19 07:14:16,973 INFO L130 PetriNetUnfolder]: For 86784/86792 co-relation queries the response was YES. [2022-01-19 07:14:17,042 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21652 conditions, 2595 events. 680/2595 cut-off events. For 86784/86792 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 20672 event pairs, 286 based on Foata normal form. 1/2519 useless extension candidates. Maximal degree in co-relation 21270. Up to 534 conditions per place. [2022-01-19 07:14:17,052 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 338 selfloop transitions, 182 changer transitions 82/743 dead transitions. [2022-01-19 07:14:17,052 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 860 places, 743 transitions, 16955 flow [2022-01-19 07:14:17,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 07:14:17,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 07:14:17,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5606 transitions. [2022-01-19 07:14:17,056 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7627210884353741 [2022-01-19 07:14:17,056 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5606 transitions. [2022-01-19 07:14:17,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5606 transitions. [2022-01-19 07:14:17,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:14:17,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5606 transitions. [2022-01-19 07:14:17,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 160.17142857142858) internal successors, (5606), 35 states have internal predecessors, (5606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:17,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:17,064 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:17,064 INFO L186 Difference]: Start difference. First operand has 848 places, 613 transitions, 12509 flow. Second operand 35 states and 5606 transitions. [2022-01-19 07:14:17,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 860 places, 743 transitions, 16955 flow [2022-01-19 07:14:17,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 837 places, 743 transitions, 16424 flow, removed 125 selfloop flow, removed 23 redundant places. [2022-01-19 07:14:17,728 INFO L242 Difference]: Finished difference. Result has 859 places, 626 transitions, 12945 flow [2022-01-19 07:14:17,728 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12095, PETRI_DIFFERENCE_MINUEND_PLACES=803, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=12945, PETRI_PLACES=859, PETRI_TRANSITIONS=626} [2022-01-19 07:14:17,728 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 672 predicate places. [2022-01-19 07:14:17,728 INFO L470 AbstractCegarLoop]: Abstraction has has 859 places, 626 transitions, 12945 flow [2022-01-19 07:14:17,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:17,729 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:14:17,729 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:14:17,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable385 [2022-01-19 07:14:17,729 INFO L402 AbstractCegarLoop]: === Iteration 387 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:14:17,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:14:17,729 INFO L85 PathProgramCache]: Analyzing trace with hash -391632668, now seen corresponding path program 83 times [2022-01-19 07:14:17,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:14:17,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314572007] [2022-01-19 07:14:17,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:14:17,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:14:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:14:17,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:14:17,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:14:17,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314572007] [2022-01-19 07:14:17,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314572007] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:14:17,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:14:17,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:14:17,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393158381] [2022-01-19 07:14:17,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:14:17,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:14:17,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:14:17,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:14:17,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:14:17,835 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:14:17,835 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 859 places, 626 transitions, 12945 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:17,835 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:14:17,835 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:14:17,835 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:14:19,354 INFO L129 PetriNetUnfolder]: 706/2716 cut-off events. [2022-01-19 07:14:19,354 INFO L130 PetriNetUnfolder]: For 91007/91017 co-relation queries the response was YES. [2022-01-19 07:14:19,425 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22732 conditions, 2716 events. 706/2716 cut-off events. For 91007/91017 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 22015 event pairs, 294 based on Foata normal form. 1/2644 useless extension candidates. Maximal degree in co-relation 22346. Up to 548 conditions per place. [2022-01-19 07:14:19,435 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 345 selfloop transitions, 198 changer transitions 75/759 dead transitions. [2022-01-19 07:14:19,435 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 875 places, 759 transitions, 17563 flow [2022-01-19 07:14:19,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:14:19,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:14:19,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6083 transitions. [2022-01-19 07:14:19,438 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.762280701754386 [2022-01-19 07:14:19,438 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6083 transitions. [2022-01-19 07:14:19,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6083 transitions. [2022-01-19 07:14:19,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:14:19,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6083 transitions. [2022-01-19 07:14:19,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.07894736842104) internal successors, (6083), 38 states have internal predecessors, (6083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:19,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:19,445 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:19,445 INFO L186 Difference]: Start difference. First operand has 859 places, 626 transitions, 12945 flow. Second operand 38 states and 6083 transitions. [2022-01-19 07:14:19,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 875 places, 759 transitions, 17563 flow [2022-01-19 07:14:20,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 848 places, 759 transitions, 16847 flow, removed 136 selfloop flow, removed 27 redundant places. [2022-01-19 07:14:20,116 INFO L242 Difference]: Finished difference. Result has 871 places, 646 transitions, 13490 flow [2022-01-19 07:14:20,116 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12369, PETRI_DIFFERENCE_MINUEND_PLACES=811, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=13490, PETRI_PLACES=871, PETRI_TRANSITIONS=646} [2022-01-19 07:14:20,116 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 684 predicate places. [2022-01-19 07:14:20,117 INFO L470 AbstractCegarLoop]: Abstraction has has 871 places, 646 transitions, 13490 flow [2022-01-19 07:14:20,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:20,117 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:14:20,117 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:14:20,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable386 [2022-01-19 07:14:20,117 INFO L402 AbstractCegarLoop]: === Iteration 388 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:14:20,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:14:20,117 INFO L85 PathProgramCache]: Analyzing trace with hash 127120358, now seen corresponding path program 84 times [2022-01-19 07:14:20,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:14:20,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938413519] [2022-01-19 07:14:20,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:14:20,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:14:20,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:14:20,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:14:20,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:14:20,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938413519] [2022-01-19 07:14:20,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938413519] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:14:20,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:14:20,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:14:20,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320466540] [2022-01-19 07:14:20,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:14:20,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:14:20,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:14:20,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:14:20,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:14:20,220 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:14:20,221 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 871 places, 646 transitions, 13490 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:20,221 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:14:20,221 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:14:20,221 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:14:21,824 INFO L129 PetriNetUnfolder]: 701/2680 cut-off events. [2022-01-19 07:14:21,824 INFO L130 PetriNetUnfolder]: For 86640/86659 co-relation queries the response was YES. [2022-01-19 07:14:21,908 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22443 conditions, 2680 events. 701/2680 cut-off events. For 86640/86659 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 21622 event pairs, 308 based on Foata normal form. 3/2605 useless extension candidates. Maximal degree in co-relation 22055. Up to 545 conditions per place. [2022-01-19 07:14:21,919 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 337 selfloop transitions, 194 changer transitions 71/743 dead transitions. [2022-01-19 07:14:21,919 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 883 places, 743 transitions, 17182 flow [2022-01-19 07:14:21,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 07:14:21,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 07:14:21,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5929 transitions. [2022-01-19 07:14:21,922 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763063063063063 [2022-01-19 07:14:21,922 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5929 transitions. [2022-01-19 07:14:21,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5929 transitions. [2022-01-19 07:14:21,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:14:21,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5929 transitions. [2022-01-19 07:14:21,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.24324324324326) internal successors, (5929), 37 states have internal predecessors, (5929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:21,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:21,930 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:21,930 INFO L186 Difference]: Start difference. First operand has 871 places, 646 transitions, 13490 flow. Second operand 37 states and 5929 transitions. [2022-01-19 07:14:21,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 883 places, 743 transitions, 17182 flow [2022-01-19 07:14:22,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 864 places, 743 transitions, 16740 flow, removed 124 selfloop flow, removed 19 redundant places. [2022-01-19 07:14:22,659 INFO L242 Difference]: Finished difference. Result has 887 places, 649 transitions, 13800 flow [2022-01-19 07:14:22,660 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13182, PETRI_DIFFERENCE_MINUEND_PLACES=828, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=13800, PETRI_PLACES=887, PETRI_TRANSITIONS=649} [2022-01-19 07:14:22,660 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 700 predicate places. [2022-01-19 07:14:22,660 INFO L470 AbstractCegarLoop]: Abstraction has has 887 places, 649 transitions, 13800 flow [2022-01-19 07:14:22,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:22,660 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:14:22,660 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:14:22,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable387 [2022-01-19 07:14:22,660 INFO L402 AbstractCegarLoop]: === Iteration 389 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:14:22,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:14:22,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1548416900, now seen corresponding path program 85 times [2022-01-19 07:14:22,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:14:22,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226814079] [2022-01-19 07:14:22,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:14:22,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:14:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:14:22,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:14:22,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:14:22,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226814079] [2022-01-19 07:14:22,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226814079] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:14:22,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:14:22,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:14:22,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145447866] [2022-01-19 07:14:22,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:14:22,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:14:22,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:14:22,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:14:22,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:14:22,762 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:14:22,762 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 887 places, 649 transitions, 13800 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:22,763 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:14:22,763 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:14:22,763 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:14:24,342 INFO L129 PetriNetUnfolder]: 726/2777 cut-off events. [2022-01-19 07:14:24,342 INFO L130 PetriNetUnfolder]: For 91664/91672 co-relation queries the response was YES. [2022-01-19 07:14:24,419 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23469 conditions, 2777 events. 726/2777 cut-off events. For 91664/91672 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 22660 event pairs, 321 based on Foata normal form. 1/2700 useless extension candidates. Maximal degree in co-relation 23074. Up to 559 conditions per place. [2022-01-19 07:14:24,430 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 375 selfloop transitions, 178 changer transitions 69/763 dead transitions. [2022-01-19 07:14:24,430 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 900 places, 763 transitions, 17828 flow [2022-01-19 07:14:24,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 07:14:24,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 07:14:24,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5933 transitions. [2022-01-19 07:14:24,432 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7635778635778636 [2022-01-19 07:14:24,432 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5933 transitions. [2022-01-19 07:14:24,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5933 transitions. [2022-01-19 07:14:24,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:14:24,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5933 transitions. [2022-01-19 07:14:24,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.35135135135135) internal successors, (5933), 37 states have internal predecessors, (5933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:24,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:24,440 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:24,440 INFO L186 Difference]: Start difference. First operand has 887 places, 649 transitions, 13800 flow. Second operand 37 states and 5933 transitions. [2022-01-19 07:14:24,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 900 places, 763 transitions, 17828 flow [2022-01-19 07:14:25,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 876 places, 763 transitions, 17314 flow, removed 101 selfloop flow, removed 24 redundant places. [2022-01-19 07:14:25,159 INFO L242 Difference]: Finished difference. Result has 900 places, 668 transitions, 14356 flow [2022-01-19 07:14:25,159 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13350, PETRI_DIFFERENCE_MINUEND_PLACES=840, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=649, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=14356, PETRI_PLACES=900, PETRI_TRANSITIONS=668} [2022-01-19 07:14:25,160 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 713 predicate places. [2022-01-19 07:14:25,160 INFO L470 AbstractCegarLoop]: Abstraction has has 900 places, 668 transitions, 14356 flow [2022-01-19 07:14:25,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:25,160 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:14:25,160 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:14:25,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable388 [2022-01-19 07:14:25,160 INFO L402 AbstractCegarLoop]: === Iteration 390 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:14:25,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:14:25,160 INFO L85 PathProgramCache]: Analyzing trace with hash -73514740, now seen corresponding path program 86 times [2022-01-19 07:14:25,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:14:25,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208675826] [2022-01-19 07:14:25,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:14:25,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:14:25,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:14:25,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:14:25,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:14:25,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208675826] [2022-01-19 07:14:25,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208675826] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:14:25,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:14:25,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:14:25,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649119814] [2022-01-19 07:14:25,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:14:25,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:14:25,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:14:25,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:14:25,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:14:25,265 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:14:25,266 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 900 places, 668 transitions, 14356 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:25,266 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:14:25,266 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:14:25,266 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:14:26,860 INFO L129 PetriNetUnfolder]: 722/2771 cut-off events. [2022-01-19 07:14:26,860 INFO L130 PetriNetUnfolder]: For 93243/93268 co-relation queries the response was YES. [2022-01-19 07:14:26,943 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23437 conditions, 2771 events. 722/2771 cut-off events. For 93243/93268 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 22602 event pairs, 265 based on Foata normal form. 3/2709 useless extension candidates. Maximal degree in co-relation 23038. Up to 556 conditions per place. [2022-01-19 07:14:26,955 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 361 selfloop transitions, 227 changer transitions 80/809 dead transitions. [2022-01-19 07:14:26,955 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 914 places, 809 transitions, 19315 flow [2022-01-19 07:14:26,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:14:26,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:14:26,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6079 transitions. [2022-01-19 07:14:26,958 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7617794486215539 [2022-01-19 07:14:26,958 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6079 transitions. [2022-01-19 07:14:26,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6079 transitions. [2022-01-19 07:14:26,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:14:26,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6079 transitions. [2022-01-19 07:14:26,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.97368421052633) internal successors, (6079), 38 states have internal predecessors, (6079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:26,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:26,965 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:26,966 INFO L186 Difference]: Start difference. First operand has 900 places, 668 transitions, 14356 flow. Second operand 38 states and 6079 transitions. [2022-01-19 07:14:26,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 914 places, 809 transitions, 19315 flow [2022-01-19 07:14:27,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 893 places, 809 transitions, 18893 flow, removed 101 selfloop flow, removed 21 redundant places. [2022-01-19 07:14:27,763 INFO L242 Difference]: Finished difference. Result has 916 places, 675 transitions, 14863 flow [2022-01-19 07:14:27,763 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14018, PETRI_DIFFERENCE_MINUEND_PLACES=856, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=14863, PETRI_PLACES=916, PETRI_TRANSITIONS=675} [2022-01-19 07:14:27,763 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 729 predicate places. [2022-01-19 07:14:27,764 INFO L470 AbstractCegarLoop]: Abstraction has has 916 places, 675 transitions, 14863 flow [2022-01-19 07:14:27,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:27,764 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:14:27,764 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:14:27,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable389 [2022-01-19 07:14:27,764 INFO L402 AbstractCegarLoop]: === Iteration 391 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:14:27,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:14:27,764 INFO L85 PathProgramCache]: Analyzing trace with hash -630641100, now seen corresponding path program 87 times [2022-01-19 07:14:27,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:14:27,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232709966] [2022-01-19 07:14:27,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:14:27,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:14:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:14:27,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:14:27,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:14:27,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232709966] [2022-01-19 07:14:27,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232709966] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:14:27,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:14:27,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:14:27,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701128390] [2022-01-19 07:14:27,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:14:27,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:14:27,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:14:27,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:14:27,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:14:27,869 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:14:27,870 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 916 places, 675 transitions, 14863 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:27,870 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:14:27,870 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:14:27,870 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:14:29,538 INFO L129 PetriNetUnfolder]: 730/2798 cut-off events. [2022-01-19 07:14:29,538 INFO L130 PetriNetUnfolder]: For 93582/93590 co-relation queries the response was YES. [2022-01-19 07:14:29,630 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23778 conditions, 2798 events. 730/2798 cut-off events. For 93582/93590 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 22888 event pairs, 308 based on Foata normal form. 1/2724 useless extension candidates. Maximal degree in co-relation 23373. Up to 570 conditions per place. [2022-01-19 07:14:29,641 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 391 selfloop transitions, 187 changer transitions 77/796 dead transitions. [2022-01-19 07:14:29,641 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 927 places, 796 transitions, 19325 flow [2022-01-19 07:14:29,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 07:14:29,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 07:14:29,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5770 transitions. [2022-01-19 07:14:29,644 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7632275132275133 [2022-01-19 07:14:29,644 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5770 transitions. [2022-01-19 07:14:29,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5770 transitions. [2022-01-19 07:14:29,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:14:29,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5770 transitions. [2022-01-19 07:14:29,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.27777777777777) internal successors, (5770), 36 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:29,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:29,651 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:29,651 INFO L186 Difference]: Start difference. First operand has 916 places, 675 transitions, 14863 flow. Second operand 36 states and 5770 transitions. [2022-01-19 07:14:29,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 927 places, 796 transitions, 19325 flow [2022-01-19 07:14:30,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 906 places, 796 transitions, 18961 flow, removed 97 selfloop flow, removed 21 redundant places. [2022-01-19 07:14:30,471 INFO L242 Difference]: Finished difference. Result has 929 places, 691 transitions, 15569 flow [2022-01-19 07:14:30,471 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14579, PETRI_DIFFERENCE_MINUEND_PLACES=871, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=675, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=15569, PETRI_PLACES=929, PETRI_TRANSITIONS=691} [2022-01-19 07:14:30,472 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 742 predicate places. [2022-01-19 07:14:30,472 INFO L470 AbstractCegarLoop]: Abstraction has has 929 places, 691 transitions, 15569 flow [2022-01-19 07:14:30,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:30,472 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:14:30,472 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:14:30,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable390 [2022-01-19 07:14:30,472 INFO L402 AbstractCegarLoop]: === Iteration 392 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:14:30,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:14:30,472 INFO L85 PathProgramCache]: Analyzing trace with hash 808933784, now seen corresponding path program 88 times [2022-01-19 07:14:30,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:14:30,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90363695] [2022-01-19 07:14:30,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:14:30,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:14:30,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:14:30,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:14:30,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:14:30,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90363695] [2022-01-19 07:14:30,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90363695] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:14:30,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:14:30,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:14:30,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383175570] [2022-01-19 07:14:30,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:14:30,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:14:30,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:14:30,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:14:30,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:14:30,576 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:14:30,577 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 929 places, 691 transitions, 15569 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:30,577 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:14:30,577 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:14:30,577 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:14:32,326 INFO L129 PetriNetUnfolder]: 724/2809 cut-off events. [2022-01-19 07:14:32,326 INFO L130 PetriNetUnfolder]: For 94819/94827 co-relation queries the response was YES. [2022-01-19 07:14:32,400 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23872 conditions, 2809 events. 724/2809 cut-off events. For 94819/94827 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 23036 event pairs, 302 based on Foata normal form. 1/2740 useless extension candidates. Maximal degree in co-relation 23462. Up to 567 conditions per place. [2022-01-19 07:14:32,410 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 404 selfloop transitions, 182 changer transitions 74/801 dead transitions. [2022-01-19 07:14:32,410 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 944 places, 801 transitions, 19835 flow [2022-01-19 07:14:32,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:14:32,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:14:32,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6087 transitions. [2022-01-19 07:14:32,413 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.762781954887218 [2022-01-19 07:14:32,413 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6087 transitions. [2022-01-19 07:14:32,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6087 transitions. [2022-01-19 07:14:32,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:14:32,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6087 transitions. [2022-01-19 07:14:32,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.18421052631578) internal successors, (6087), 38 states have internal predecessors, (6087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:32,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:32,420 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:32,420 INFO L186 Difference]: Start difference. First operand has 929 places, 691 transitions, 15569 flow. Second operand 38 states and 6087 transitions. [2022-01-19 07:14:32,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 944 places, 801 transitions, 19835 flow [2022-01-19 07:14:33,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 920 places, 801 transitions, 19246 flow, removed 130 selfloop flow, removed 24 redundant places. [2022-01-19 07:14:33,218 INFO L242 Difference]: Finished difference. Result has 943 places, 696 transitions, 15799 flow [2022-01-19 07:14:33,219 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15109, PETRI_DIFFERENCE_MINUEND_PLACES=883, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=15799, PETRI_PLACES=943, PETRI_TRANSITIONS=696} [2022-01-19 07:14:33,219 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 756 predicate places. [2022-01-19 07:14:33,219 INFO L470 AbstractCegarLoop]: Abstraction has has 943 places, 696 transitions, 15799 flow [2022-01-19 07:14:33,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:33,219 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:14:33,219 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:14:33,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable391 [2022-01-19 07:14:33,219 INFO L402 AbstractCegarLoop]: === Iteration 393 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:14:33,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:14:33,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1829562648, now seen corresponding path program 89 times [2022-01-19 07:14:33,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:14:33,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704945378] [2022-01-19 07:14:33,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:14:33,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:14:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:14:33,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:14:33,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:14:33,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704945378] [2022-01-19 07:14:33,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704945378] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:14:33,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:14:33,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:14:33,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560733639] [2022-01-19 07:14:33,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:14:33,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:14:33,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:14:33,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:14:33,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:14:33,320 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:14:33,321 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 943 places, 696 transitions, 15799 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:33,321 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:14:33,321 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:14:33,321 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:14:34,975 INFO L129 PetriNetUnfolder]: 749/2856 cut-off events. [2022-01-19 07:14:34,976 INFO L130 PetriNetUnfolder]: For 97212/97233 co-relation queries the response was YES. [2022-01-19 07:14:35,056 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24645 conditions, 2856 events. 749/2856 cut-off events. For 97212/97233 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 23557 event pairs, 313 based on Foata normal form. 3/2784 useless extension candidates. Maximal degree in co-relation 24231. Up to 581 conditions per place. [2022-01-19 07:14:35,068 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 374 selfloop transitions, 227 changer transitions 69/811 dead transitions. [2022-01-19 07:14:35,068 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 956 places, 811 transitions, 20157 flow [2022-01-19 07:14:35,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 07:14:35,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 07:14:35,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6085 transitions. [2022-01-19 07:14:35,070 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625313283208021 [2022-01-19 07:14:35,070 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6085 transitions. [2022-01-19 07:14:35,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6085 transitions. [2022-01-19 07:14:35,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:14:35,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6085 transitions. [2022-01-19 07:14:35,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.1315789473684) internal successors, (6085), 38 states have internal predecessors, (6085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:35,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:35,078 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:35,078 INFO L186 Difference]: Start difference. First operand has 943 places, 696 transitions, 15799 flow. Second operand 38 states and 6085 transitions. [2022-01-19 07:14:35,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 956 places, 811 transitions, 20157 flow [2022-01-19 07:14:35,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 935 places, 811 transitions, 19717 flow, removed 106 selfloop flow, removed 21 redundant places. [2022-01-19 07:14:35,965 INFO L242 Difference]: Finished difference. Result has 959 places, 715 transitions, 16596 flow [2022-01-19 07:14:35,965 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15435, PETRI_DIFFERENCE_MINUEND_PLACES=898, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=16596, PETRI_PLACES=959, PETRI_TRANSITIONS=715} [2022-01-19 07:14:35,965 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 772 predicate places. [2022-01-19 07:14:35,965 INFO L470 AbstractCegarLoop]: Abstraction has has 959 places, 715 transitions, 16596 flow [2022-01-19 07:14:35,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:35,966 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:14:35,966 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:14:35,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable392 [2022-01-19 07:14:35,966 INFO L402 AbstractCegarLoop]: === Iteration 394 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:14:35,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:14:35,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1544985142, now seen corresponding path program 90 times [2022-01-19 07:14:35,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:14:35,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954047832] [2022-01-19 07:14:35,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:14:35,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:14:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:14:36,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:14:36,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:14:36,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954047832] [2022-01-19 07:14:36,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954047832] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:14:36,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:14:36,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:14:36,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636535609] [2022-01-19 07:14:36,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:14:36,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:14:36,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:14:36,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:14:36,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:14:36,067 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:14:36,068 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 959 places, 715 transitions, 16596 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:36,068 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:14:36,068 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:14:36,068 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:14:37,736 INFO L129 PetriNetUnfolder]: 745/2874 cut-off events. [2022-01-19 07:14:37,736 INFO L130 PetriNetUnfolder]: For 97375/97383 co-relation queries the response was YES. [2022-01-19 07:14:37,824 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24728 conditions, 2874 events. 745/2874 cut-off events. For 97375/97383 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 23756 event pairs, 315 based on Foata normal form. 1/2803 useless extension candidates. Maximal degree in co-relation 24308. Up to 578 conditions per place. [2022-01-19 07:14:37,835 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 368 selfloop transitions, 231 changer transitions 71/811 dead transitions. [2022-01-19 07:14:37,835 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 971 places, 811 transitions, 20490 flow [2022-01-19 07:14:37,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 07:14:37,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 07:14:37,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5925 transitions. [2022-01-19 07:14:37,838 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625482625482626 [2022-01-19 07:14:37,838 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5925 transitions. [2022-01-19 07:14:37,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5925 transitions. [2022-01-19 07:14:37,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:14:37,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5925 transitions. [2022-01-19 07:14:37,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.13513513513513) internal successors, (5925), 37 states have internal predecessors, (5925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:37,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:37,845 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:37,845 INFO L186 Difference]: Start difference. First operand has 959 places, 715 transitions, 16596 flow. Second operand 37 states and 5925 transitions. [2022-01-19 07:14:37,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 971 places, 811 transitions, 20490 flow [2022-01-19 07:14:38,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 951 places, 811 transitions, 19992 flow, removed 143 selfloop flow, removed 20 redundant places. [2022-01-19 07:14:38,707 INFO L242 Difference]: Finished difference. Result has 973 places, 717 transitions, 16878 flow [2022-01-19 07:14:38,708 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16236, PETRI_DIFFERENCE_MINUEND_PLACES=915, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=715, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=16878, PETRI_PLACES=973, PETRI_TRANSITIONS=717} [2022-01-19 07:14:38,708 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 786 predicate places. [2022-01-19 07:14:38,708 INFO L470 AbstractCegarLoop]: Abstraction has has 973 places, 717 transitions, 16878 flow [2022-01-19 07:14:38,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:38,708 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:14:38,708 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:14:38,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable393 [2022-01-19 07:14:38,708 INFO L402 AbstractCegarLoop]: === Iteration 395 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:14:38,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:14:38,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1511538956, now seen corresponding path program 91 times [2022-01-19 07:14:38,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:14:38,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89529364] [2022-01-19 07:14:38,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:14:38,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:14:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:14:38,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:14:38,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:14:38,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89529364] [2022-01-19 07:14:38,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89529364] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:14:38,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:14:38,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:14:38,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959164145] [2022-01-19 07:14:38,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:14:38,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:14:38,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:14:38,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:14:38,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:14:38,807 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:14:38,808 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 973 places, 717 transitions, 16878 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:38,808 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:14:38,808 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:14:38,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:14:40,431 INFO L129 PetriNetUnfolder]: 748/2892 cut-off events. [2022-01-19 07:14:40,431 INFO L130 PetriNetUnfolder]: For 95647/95655 co-relation queries the response was YES. [2022-01-19 07:14:40,515 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24946 conditions, 2892 events. 748/2892 cut-off events. For 95647/95655 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 23934 event pairs, 321 based on Foata normal form. 1/2822 useless extension candidates. Maximal degree in co-relation 24521. Up to 593 conditions per place. [2022-01-19 07:14:40,526 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 395 selfloop transitions, 207 changer transitions 59/802 dead transitions. [2022-01-19 07:14:40,527 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 979 places, 802 transitions, 20377 flow [2022-01-19 07:14:40,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:14:40,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:14:40,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4825 transitions. [2022-01-19 07:14:40,529 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658730158730159 [2022-01-19 07:14:40,529 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4825 transitions. [2022-01-19 07:14:40,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4825 transitions. [2022-01-19 07:14:40,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:14:40,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4825 transitions. [2022-01-19 07:14:40,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.83333333333334) internal successors, (4825), 30 states have internal predecessors, (4825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:40,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:40,535 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:40,535 INFO L186 Difference]: Start difference. First operand has 973 places, 717 transitions, 16878 flow. Second operand 30 states and 4825 transitions. [2022-01-19 07:14:40,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 979 places, 802 transitions, 20377 flow [2022-01-19 07:14:41,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 942 places, 802 transitions, 19751 flow, removed 91 selfloop flow, removed 37 redundant places. [2022-01-19 07:14:41,395 INFO L242 Difference]: Finished difference. Result has 955 places, 730 transitions, 17190 flow [2022-01-19 07:14:41,395 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16319, PETRI_DIFFERENCE_MINUEND_PLACES=913, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=717, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=516, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17190, PETRI_PLACES=955, PETRI_TRANSITIONS=730} [2022-01-19 07:14:41,395 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 768 predicate places. [2022-01-19 07:14:41,395 INFO L470 AbstractCegarLoop]: Abstraction has has 955 places, 730 transitions, 17190 flow [2022-01-19 07:14:41,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:41,396 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:14:41,396 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:14:41,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable394 [2022-01-19 07:14:41,396 INFO L402 AbstractCegarLoop]: === Iteration 396 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:14:41,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:14:41,396 INFO L85 PathProgramCache]: Analyzing trace with hash 673035828, now seen corresponding path program 92 times [2022-01-19 07:14:41,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:14:41,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724807738] [2022-01-19 07:14:41,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:14:41,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:14:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:14:41,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:14:41,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:14:41,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724807738] [2022-01-19 07:14:41,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724807738] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:14:41,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:14:41,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:14:41,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502148902] [2022-01-19 07:14:41,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:14:41,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:14:41,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:14:41,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:14:41,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:14:41,497 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:14:41,498 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 955 places, 730 transitions, 17190 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:41,498 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:14:41,498 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:14:41,498 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:14:43,064 INFO L129 PetriNetUnfolder]: 753/2890 cut-off events. [2022-01-19 07:14:43,064 INFO L130 PetriNetUnfolder]: For 94498/94517 co-relation queries the response was YES. [2022-01-19 07:14:43,142 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24964 conditions, 2890 events. 753/2890 cut-off events. For 94498/94517 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 23887 event pairs, 315 based on Foata normal form. 3/2819 useless extension candidates. Maximal degree in co-relation 24559. Up to 595 conditions per place. [2022-01-19 07:14:43,153 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 375 selfloop transitions, 239 changer transitions 58/813 dead transitions. [2022-01-19 07:14:43,153 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 969 places, 813 transitions, 20724 flow [2022-01-19 07:14:43,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:14:43,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:14:43,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4819 transitions. [2022-01-19 07:14:43,155 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7649206349206349 [2022-01-19 07:14:43,155 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4819 transitions. [2022-01-19 07:14:43,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4819 transitions. [2022-01-19 07:14:43,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:14:43,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4819 transitions. [2022-01-19 07:14:43,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.63333333333333) internal successors, (4819), 30 states have internal predecessors, (4819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:43,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:43,162 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:43,162 INFO L186 Difference]: Start difference. First operand has 955 places, 730 transitions, 17190 flow. Second operand 30 states and 4819 transitions. [2022-01-19 07:14:43,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 969 places, 813 transitions, 20724 flow [2022-01-19 07:14:43,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 957 places, 813 transitions, 20327 flow, removed 62 selfloop flow, removed 12 redundant places. [2022-01-19 07:14:44,005 INFO L242 Difference]: Finished difference. Result has 970 places, 743 transitions, 17792 flow [2022-01-19 07:14:44,005 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16839, PETRI_DIFFERENCE_MINUEND_PLACES=928, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17792, PETRI_PLACES=970, PETRI_TRANSITIONS=743} [2022-01-19 07:14:44,005 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 783 predicate places. [2022-01-19 07:14:44,006 INFO L470 AbstractCegarLoop]: Abstraction has has 970 places, 743 transitions, 17792 flow [2022-01-19 07:14:44,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:44,006 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:14:44,006 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:14:44,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable395 [2022-01-19 07:14:44,006 INFO L402 AbstractCegarLoop]: === Iteration 397 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:14:44,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:14:44,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1505201588, now seen corresponding path program 93 times [2022-01-19 07:14:44,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:14:44,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074699750] [2022-01-19 07:14:44,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:14:44,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:14:44,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:14:44,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:14:44,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:14:44,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074699750] [2022-01-19 07:14:44,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074699750] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:14:44,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:14:44,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:14:44,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951118225] [2022-01-19 07:14:44,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:14:44,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:14:44,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:14:44,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:14:44,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:14:44,101 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:14:44,102 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 970 places, 743 transitions, 17792 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:44,102 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:14:44,102 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:14:44,102 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:14:45,751 INFO L129 PetriNetUnfolder]: 748/2899 cut-off events. [2022-01-19 07:14:45,751 INFO L130 PetriNetUnfolder]: For 96369/96377 co-relation queries the response was YES. [2022-01-19 07:14:45,834 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24940 conditions, 2899 events. 748/2899 cut-off events. For 96369/96377 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 24010 event pairs, 276 based on Foata normal form. 1/2840 useless extension candidates. Maximal degree in co-relation 24530. Up to 595 conditions per place. [2022-01-19 07:14:45,848 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 390 selfloop transitions, 253 changer transitions 69/853 dead transitions. [2022-01-19 07:14:45,848 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 984 places, 853 transitions, 22098 flow [2022-01-19 07:14:45,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:14:45,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:14:45,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4815 transitions. [2022-01-19 07:14:45,851 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2022-01-19 07:14:45,851 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4815 transitions. [2022-01-19 07:14:45,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4815 transitions. [2022-01-19 07:14:45,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:14:45,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4815 transitions. [2022-01-19 07:14:45,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.5) internal successors, (4815), 30 states have internal predecessors, (4815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:45,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:45,859 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:45,859 INFO L186 Difference]: Start difference. First operand has 970 places, 743 transitions, 17792 flow. Second operand 30 states and 4815 transitions. [2022-01-19 07:14:45,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 984 places, 853 transitions, 22098 flow [2022-01-19 07:14:46,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 972 places, 853 transitions, 21700 flow, removed 75 selfloop flow, removed 12 redundant places. [2022-01-19 07:14:46,837 INFO L242 Difference]: Finished difference. Result has 985 places, 749 transitions, 18195 flow [2022-01-19 07:14:46,838 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17448, PETRI_DIFFERENCE_MINUEND_PLACES=943, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=743, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=18195, PETRI_PLACES=985, PETRI_TRANSITIONS=749} [2022-01-19 07:14:46,838 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 798 predicate places. [2022-01-19 07:14:46,838 INFO L470 AbstractCegarLoop]: Abstraction has has 985 places, 749 transitions, 18195 flow [2022-01-19 07:14:46,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:46,839 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:14:46,839 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:14:46,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable396 [2022-01-19 07:14:46,839 INFO L402 AbstractCegarLoop]: === Iteration 398 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:14:46,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:14:46,839 INFO L85 PathProgramCache]: Analyzing trace with hash 284993566, now seen corresponding path program 94 times [2022-01-19 07:14:46,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:14:46,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723253506] [2022-01-19 07:14:46,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:14:46,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:14:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:14:46,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:14:46,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:14:46,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723253506] [2022-01-19 07:14:46,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723253506] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:14:46,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:14:46,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:14:46,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38951568] [2022-01-19 07:14:46,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:14:46,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:14:46,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:14:46,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:14:46,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:14:46,950 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:14:46,951 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 985 places, 749 transitions, 18195 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:46,951 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:14:46,951 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:14:46,951 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:14:48,663 INFO L129 PetriNetUnfolder]: 749/2901 cut-off events. [2022-01-19 07:14:48,664 INFO L130 PetriNetUnfolder]: For 100078/100086 co-relation queries the response was YES. [2022-01-19 07:14:48,744 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25290 conditions, 2901 events. 749/2901 cut-off events. For 100078/100086 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 24063 event pairs, 309 based on Foata normal form. 1/2832 useless extension candidates. Maximal degree in co-relation 24875. Up to 595 conditions per place. [2022-01-19 07:14:48,755 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 416 selfloop transitions, 214 changer transitions 60/831 dead transitions. [2022-01-19 07:14:48,755 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 999 places, 831 transitions, 21837 flow [2022-01-19 07:14:48,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:14:48,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:14:48,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4821 transitions. [2022-01-19 07:14:48,757 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7652380952380953 [2022-01-19 07:14:48,757 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4821 transitions. [2022-01-19 07:14:48,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4821 transitions. [2022-01-19 07:14:48,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:14:48,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4821 transitions. [2022-01-19 07:14:48,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.7) internal successors, (4821), 30 states have internal predecessors, (4821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:48,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:48,763 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:48,763 INFO L186 Difference]: Start difference. First operand has 985 places, 749 transitions, 18195 flow. Second operand 30 states and 4821 transitions. [2022-01-19 07:14:48,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 999 places, 831 transitions, 21837 flow [2022-01-19 07:14:49,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 987 places, 831 transitions, 21490 flow, removed 83 selfloop flow, removed 12 redundant places. [2022-01-19 07:14:49,646 INFO L242 Difference]: Finished difference. Result has 1000 places, 760 transitions, 18760 flow [2022-01-19 07:14:49,646 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17887, PETRI_DIFFERENCE_MINUEND_PLACES=958, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=18760, PETRI_PLACES=1000, PETRI_TRANSITIONS=760} [2022-01-19 07:14:49,647 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 813 predicate places. [2022-01-19 07:14:49,647 INFO L470 AbstractCegarLoop]: Abstraction has has 1000 places, 760 transitions, 18760 flow [2022-01-19 07:14:49,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:49,647 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:14:49,647 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:14:49,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable397 [2022-01-19 07:14:49,647 INFO L402 AbstractCegarLoop]: === Iteration 399 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:14:49,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:14:49,647 INFO L85 PathProgramCache]: Analyzing trace with hash -939614796, now seen corresponding path program 95 times [2022-01-19 07:14:49,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:14:49,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447173888] [2022-01-19 07:14:49,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:14:49,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:14:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:14:49,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:14:49,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:14:49,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447173888] [2022-01-19 07:14:49,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447173888] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:14:49,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:14:49,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:14:49,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165833034] [2022-01-19 07:14:49,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:14:49,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:14:49,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:14:49,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:14:49,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:14:49,744 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:14:49,744 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1000 places, 760 transitions, 18760 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:49,744 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:14:49,744 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:14:49,745 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:14:51,311 INFO L129 PetriNetUnfolder]: 745/2876 cut-off events. [2022-01-19 07:14:51,312 INFO L130 PetriNetUnfolder]: For 100282/100290 co-relation queries the response was YES. [2022-01-19 07:14:51,396 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25224 conditions, 2876 events. 745/2876 cut-off events. For 100282/100290 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 23744 event pairs, 310 based on Foata normal form. 1/2805 useless extension candidates. Maximal degree in co-relation 24805. Up to 595 conditions per place. [2022-01-19 07:14:51,407 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 390 selfloop transitions, 245 changer transitions 60/836 dead transitions. [2022-01-19 07:14:51,407 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1013 places, 836 transitions, 22198 flow [2022-01-19 07:14:51,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:14:51,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:14:51,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4661 transitions. [2022-01-19 07:14:51,409 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7653530377668308 [2022-01-19 07:14:51,409 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4661 transitions. [2022-01-19 07:14:51,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4661 transitions. [2022-01-19 07:14:51,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:14:51,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4661 transitions. [2022-01-19 07:14:51,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.72413793103448) internal successors, (4661), 29 states have internal predecessors, (4661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:51,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:51,415 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:51,415 INFO L186 Difference]: Start difference. First operand has 1000 places, 760 transitions, 18760 flow. Second operand 29 states and 4661 transitions. [2022-01-19 07:14:51,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1013 places, 836 transitions, 22198 flow [2022-01-19 07:14:52,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1000 places, 836 transitions, 21778 flow, removed 72 selfloop flow, removed 13 redundant places. [2022-01-19 07:14:52,272 INFO L242 Difference]: Finished difference. Result has 1014 places, 764 transitions, 19066 flow [2022-01-19 07:14:52,273 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18386, PETRI_DIFFERENCE_MINUEND_PLACES=972, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=760, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=19066, PETRI_PLACES=1014, PETRI_TRANSITIONS=764} [2022-01-19 07:14:52,273 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 827 predicate places. [2022-01-19 07:14:52,273 INFO L470 AbstractCegarLoop]: Abstraction has has 1014 places, 764 transitions, 19066 flow [2022-01-19 07:14:52,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:52,273 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:14:52,273 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:14:52,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable398 [2022-01-19 07:14:52,273 INFO L402 AbstractCegarLoop]: === Iteration 400 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:14:52,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:14:52,274 INFO L85 PathProgramCache]: Analyzing trace with hash 486784882, now seen corresponding path program 96 times [2022-01-19 07:14:52,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:14:52,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833823018] [2022-01-19 07:14:52,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:14:52,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:14:52,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:14:52,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:14:52,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:14:52,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833823018] [2022-01-19 07:14:52,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833823018] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:14:52,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:14:52,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:14:52,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981084284] [2022-01-19 07:14:52,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:14:52,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:14:52,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:14:52,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:14:52,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:14:52,376 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:14:52,377 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1014 places, 764 transitions, 19066 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:52,377 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:14:52,377 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:14:52,377 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:14:53,903 INFO L129 PetriNetUnfolder]: 740/2868 cut-off events. [2022-01-19 07:14:53,904 INFO L130 PetriNetUnfolder]: For 103392/103400 co-relation queries the response was YES. [2022-01-19 07:14:54,000 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25226 conditions, 2868 events. 740/2868 cut-off events. For 103392/103400 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 23675 event pairs, 302 based on Foata normal form. 1/2801 useless extension candidates. Maximal degree in co-relation 24802. Up to 595 conditions per place. [2022-01-19 07:14:54,010 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 448 selfloop transitions, 195 changer transitions 62/846 dead transitions. [2022-01-19 07:14:54,010 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1029 places, 846 transitions, 22701 flow [2022-01-19 07:14:54,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:14:54,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:14:54,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4823 transitions. [2022-01-19 07:14:54,013 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655555555555555 [2022-01-19 07:14:54,013 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4823 transitions. [2022-01-19 07:14:54,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4823 transitions. [2022-01-19 07:14:54,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:14:54,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4823 transitions. [2022-01-19 07:14:54,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.76666666666668) internal successors, (4823), 30 states have internal predecessors, (4823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:54,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:54,019 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:54,019 INFO L186 Difference]: Start difference. First operand has 1014 places, 764 transitions, 19066 flow. Second operand 30 states and 4823 transitions. [2022-01-19 07:14:54,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1029 places, 846 transitions, 22701 flow [2022-01-19 07:14:54,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1015 places, 846 transitions, 22260 flow, removed 82 selfloop flow, removed 14 redundant places. [2022-01-19 07:14:54,906 INFO L242 Difference]: Finished difference. Result has 1028 places, 770 transitions, 19290 flow [2022-01-19 07:14:54,906 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18663, PETRI_DIFFERENCE_MINUEND_PLACES=986, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=764, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=19290, PETRI_PLACES=1028, PETRI_TRANSITIONS=770} [2022-01-19 07:14:54,906 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 841 predicate places. [2022-01-19 07:14:54,906 INFO L470 AbstractCegarLoop]: Abstraction has has 1028 places, 770 transitions, 19290 flow [2022-01-19 07:14:54,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:54,906 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:14:54,907 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:14:54,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable399 [2022-01-19 07:14:54,907 INFO L402 AbstractCegarLoop]: === Iteration 401 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:14:54,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:14:54,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1888547650, now seen corresponding path program 97 times [2022-01-19 07:14:54,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:14:54,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298189123] [2022-01-19 07:14:54,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:14:54,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:14:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:14:55,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:14:55,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:14:55,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298189123] [2022-01-19 07:14:55,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298189123] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:14:55,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:14:55,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:14:55,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892368315] [2022-01-19 07:14:55,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:14:55,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:14:55,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:14:55,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:14:55,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:14:55,010 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:14:55,011 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1028 places, 770 transitions, 19290 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:55,011 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:14:55,011 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:14:55,011 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:14:56,608 INFO L129 PetriNetUnfolder]: 733/2866 cut-off events. [2022-01-19 07:14:56,608 INFO L130 PetriNetUnfolder]: For 105171/105179 co-relation queries the response was YES. [2022-01-19 07:14:56,691 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25042 conditions, 2866 events. 733/2866 cut-off events. For 105171/105179 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 23694 event pairs, 273 based on Foata normal form. 1/2806 useless extension candidates. Maximal degree in co-relation 24614. Up to 589 conditions per place. [2022-01-19 07:14:56,702 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 389 selfloop transitions, 275 changer transitions 67/872 dead transitions. [2022-01-19 07:14:56,702 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1042 places, 872 transitions, 23400 flow [2022-01-19 07:14:56,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:14:56,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:14:56,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4817 transitions. [2022-01-19 07:14:56,704 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646031746031746 [2022-01-19 07:14:56,704 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4817 transitions. [2022-01-19 07:14:56,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4817 transitions. [2022-01-19 07:14:56,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:14:56,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4817 transitions. [2022-01-19 07:14:56,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.56666666666666) internal successors, (4817), 30 states have internal predecessors, (4817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:56,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:56,710 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:56,710 INFO L186 Difference]: Start difference. First operand has 1028 places, 770 transitions, 19290 flow. Second operand 30 states and 4817 transitions. [2022-01-19 07:14:56,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1042 places, 872 transitions, 23400 flow [2022-01-19 07:14:57,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1030 places, 872 transitions, 23003 flow, removed 84 selfloop flow, removed 12 redundant places. [2022-01-19 07:14:57,776 INFO L242 Difference]: Finished difference. Result has 1043 places, 776 transitions, 19712 flow [2022-01-19 07:14:57,777 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18922, PETRI_DIFFERENCE_MINUEND_PLACES=1001, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=267, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=19712, PETRI_PLACES=1043, PETRI_TRANSITIONS=776} [2022-01-19 07:14:57,777 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 856 predicate places. [2022-01-19 07:14:57,777 INFO L470 AbstractCegarLoop]: Abstraction has has 1043 places, 776 transitions, 19712 flow [2022-01-19 07:14:57,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:57,777 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:14:57,777 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:14:57,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable400 [2022-01-19 07:14:57,777 INFO L402 AbstractCegarLoop]: === Iteration 402 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:14:57,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:14:57,778 INFO L85 PathProgramCache]: Analyzing trace with hash 657872930, now seen corresponding path program 98 times [2022-01-19 07:14:57,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:14:57,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846107343] [2022-01-19 07:14:57,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:14:57,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:14:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:14:57,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:14:57,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:14:57,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846107343] [2022-01-19 07:14:57,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846107343] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:14:57,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:14:57,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:14:57,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020476103] [2022-01-19 07:14:57,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:14:57,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:14:57,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:14:57,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:14:57,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:14:57,885 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:14:57,886 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1043 places, 776 transitions, 19712 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:57,886 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:14:57,886 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:14:57,886 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:14:59,555 INFO L129 PetriNetUnfolder]: 727/2833 cut-off events. [2022-01-19 07:14:59,555 INFO L130 PetriNetUnfolder]: For 107906/107925 co-relation queries the response was YES. [2022-01-19 07:14:59,639 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25234 conditions, 2833 events. 727/2833 cut-off events. For 107906/107925 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 23366 event pairs, 289 based on Foata normal form. 3/2770 useless extension candidates. Maximal degree in co-relation 24801. Up to 587 conditions per place. [2022-01-19 07:14:59,650 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 429 selfloop transitions, 225 changer transitions 60/855 dead transitions. [2022-01-19 07:14:59,650 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1057 places, 855 transitions, 23266 flow [2022-01-19 07:14:59,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:14:59,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:14:59,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4823 transitions. [2022-01-19 07:14:59,652 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655555555555555 [2022-01-19 07:14:59,652 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4823 transitions. [2022-01-19 07:14:59,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4823 transitions. [2022-01-19 07:14:59,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:14:59,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4823 transitions. [2022-01-19 07:14:59,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.76666666666668) internal successors, (4823), 30 states have internal predecessors, (4823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:59,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:59,658 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:14:59,658 INFO L186 Difference]: Start difference. First operand has 1043 places, 776 transitions, 19712 flow. Second operand 30 states and 4823 transitions. [2022-01-19 07:14:59,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1057 places, 855 transitions, 23266 flow [2022-01-19 07:15:00,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1041 places, 855 transitions, 22860 flow, removed 92 selfloop flow, removed 16 redundant places. [2022-01-19 07:15:00,613 INFO L242 Difference]: Finished difference. Result has 1055 places, 781 transitions, 20041 flow [2022-01-19 07:15:00,613 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=19368, PETRI_DIFFERENCE_MINUEND_PLACES=1012, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=776, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=20041, PETRI_PLACES=1055, PETRI_TRANSITIONS=781} [2022-01-19 07:15:00,613 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 868 predicate places. [2022-01-19 07:15:00,613 INFO L470 AbstractCegarLoop]: Abstraction has has 1055 places, 781 transitions, 20041 flow [2022-01-19 07:15:00,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:00,614 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:15:00,614 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:15:00,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable401 [2022-01-19 07:15:00,614 INFO L402 AbstractCegarLoop]: === Iteration 403 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:15:00,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:15:00,614 INFO L85 PathProgramCache]: Analyzing trace with hash 762843296, now seen corresponding path program 99 times [2022-01-19 07:15:00,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:15:00,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054579302] [2022-01-19 07:15:00,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:15:00,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:15:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:15:00,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:15:00,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:15:00,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054579302] [2022-01-19 07:15:00,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054579302] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:15:00,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:15:00,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:15:00,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242652364] [2022-01-19 07:15:00,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:15:00,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:15:00,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:15:00,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:15:00,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:15:00,714 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:15:00,714 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1055 places, 781 transitions, 20041 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:00,714 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:15:00,715 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:15:00,715 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:15:02,491 INFO L129 PetriNetUnfolder]: 707/2799 cut-off events. [2022-01-19 07:15:02,491 INFO L130 PetriNetUnfolder]: For 107720/107728 co-relation queries the response was YES. [2022-01-19 07:15:02,560 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24747 conditions, 2799 events. 707/2799 cut-off events. For 107720/107728 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 23026 event pairs, 287 based on Foata normal form. 1/2734 useless extension candidates. Maximal degree in co-relation 24312. Up to 580 conditions per place. [2022-01-19 07:15:02,570 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 442 selfloop transitions, 190 changer transitions 64/837 dead transitions. [2022-01-19 07:15:02,570 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1068 places, 837 transitions, 22804 flow [2022-01-19 07:15:02,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:15:02,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:15:02,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4660 transitions. [2022-01-19 07:15:02,573 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7651888341543513 [2022-01-19 07:15:02,573 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4660 transitions. [2022-01-19 07:15:02,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4660 transitions. [2022-01-19 07:15:02,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:15:02,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4660 transitions. [2022-01-19 07:15:02,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.68965517241378) internal successors, (4660), 29 states have internal predecessors, (4660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:02,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:02,579 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:02,579 INFO L186 Difference]: Start difference. First operand has 1055 places, 781 transitions, 20041 flow. Second operand 29 states and 4660 transitions. [2022-01-19 07:15:02,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1068 places, 837 transitions, 22804 flow [2022-01-19 07:15:03,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1054 places, 837 transitions, 22415 flow, removed 80 selfloop flow, removed 14 redundant places. [2022-01-19 07:15:03,538 INFO L242 Difference]: Finished difference. Result has 1064 places, 762 transitions, 19433 flow [2022-01-19 07:15:03,538 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=19680, PETRI_DIFFERENCE_MINUEND_PLACES=1026, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=781, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=591, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=19433, PETRI_PLACES=1064, PETRI_TRANSITIONS=762} [2022-01-19 07:15:03,539 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 877 predicate places. [2022-01-19 07:15:03,539 INFO L470 AbstractCegarLoop]: Abstraction has has 1064 places, 762 transitions, 19433 flow [2022-01-19 07:15:03,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:03,539 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:15:03,539 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:15:03,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable402 [2022-01-19 07:15:03,539 INFO L402 AbstractCegarLoop]: === Iteration 404 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:15:03,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:15:03,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1337470260, now seen corresponding path program 100 times [2022-01-19 07:15:03,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:15:03,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685531529] [2022-01-19 07:15:03,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:15:03,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:15:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:15:03,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:15:03,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:15:03,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685531529] [2022-01-19 07:15:03,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685531529] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:15:03,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:15:03,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:15:03,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434790732] [2022-01-19 07:15:03,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:15:03,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:15:03,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:15:03,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:15:03,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:15:03,642 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:15:03,643 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1064 places, 762 transitions, 19433 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:03,643 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:15:03,643 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:15:03,643 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:15:05,235 INFO L129 PetriNetUnfolder]: 715/2785 cut-off events. [2022-01-19 07:15:05,236 INFO L130 PetriNetUnfolder]: For 109663/109682 co-relation queries the response was YES. [2022-01-19 07:15:05,339 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24877 conditions, 2785 events. 715/2785 cut-off events. For 109663/109682 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 22841 event pairs, 285 based on Foata normal form. 3/2721 useless extension candidates. Maximal degree in co-relation 24442. Up to 583 conditions per place. [2022-01-19 07:15:05,352 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 419 selfloop transitions, 227 changer transitions 59/846 dead transitions. [2022-01-19 07:15:05,352 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1067 places, 846 transitions, 23147 flow [2022-01-19 07:15:05,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:15:05,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:15:05,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4821 transitions. [2022-01-19 07:15:05,354 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7652380952380953 [2022-01-19 07:15:05,354 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4821 transitions. [2022-01-19 07:15:05,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4821 transitions. [2022-01-19 07:15:05,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:15:05,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4821 transitions. [2022-01-19 07:15:05,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.7) internal successors, (4821), 30 states have internal predecessors, (4821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:05,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:05,361 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:05,361 INFO L186 Difference]: Start difference. First operand has 1064 places, 762 transitions, 19433 flow. Second operand 30 states and 4821 transitions. [2022-01-19 07:15:05,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1067 places, 846 transitions, 23147 flow [2022-01-19 07:15:06,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1041 places, 846 transitions, 22509 flow, removed 37 selfloop flow, removed 26 redundant places. [2022-01-19 07:15:06,372 INFO L242 Difference]: Finished difference. Result has 1055 places, 774 transitions, 19762 flow [2022-01-19 07:15:06,373 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18862, PETRI_DIFFERENCE_MINUEND_PLACES=1012, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=762, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=19762, PETRI_PLACES=1055, PETRI_TRANSITIONS=774} [2022-01-19 07:15:06,373 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 868 predicate places. [2022-01-19 07:15:06,373 INFO L470 AbstractCegarLoop]: Abstraction has has 1055 places, 774 transitions, 19762 flow [2022-01-19 07:15:06,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:06,373 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:15:06,373 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:15:06,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable403 [2022-01-19 07:15:06,373 INFO L402 AbstractCegarLoop]: === Iteration 405 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:15:06,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:15:06,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1362241138, now seen corresponding path program 101 times [2022-01-19 07:15:06,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:15:06,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111162734] [2022-01-19 07:15:06,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:15:06,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:15:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:15:06,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:15:06,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:15:06,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111162734] [2022-01-19 07:15:06,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111162734] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:15:06,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:15:06,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:15:06,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335007049] [2022-01-19 07:15:06,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:15:06,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:15:06,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:15:06,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:15:06,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:15:06,477 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:15:06,478 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1055 places, 774 transitions, 19762 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:06,478 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:15:06,478 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:15:06,478 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:15:08,109 INFO L129 PetriNetUnfolder]: 708/2794 cut-off events. [2022-01-19 07:15:08,109 INFO L130 PetriNetUnfolder]: For 106454/106473 co-relation queries the response was YES. [2022-01-19 07:15:08,185 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24812 conditions, 2794 events. 708/2794 cut-off events. For 106454/106473 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 22971 event pairs, 270 based on Foata normal form. 3/2735 useless extension candidates. Maximal degree in co-relation 24378. Up to 580 conditions per place. [2022-01-19 07:15:08,195 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 477 selfloop transitions, 180 changer transitions 63/861 dead transitions. [2022-01-19 07:15:08,195 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1069 places, 861 transitions, 23566 flow [2022-01-19 07:15:08,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:15:08,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:15:08,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4825 transitions. [2022-01-19 07:15:08,198 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658730158730159 [2022-01-19 07:15:08,198 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4825 transitions. [2022-01-19 07:15:08,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4825 transitions. [2022-01-19 07:15:08,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:15:08,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4825 transitions. [2022-01-19 07:15:08,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.83333333333334) internal successors, (4825), 30 states have internal predecessors, (4825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:08,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:08,204 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:08,204 INFO L186 Difference]: Start difference. First operand has 1055 places, 774 transitions, 19762 flow. Second operand 30 states and 4825 transitions. [2022-01-19 07:15:08,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1069 places, 861 transitions, 23566 flow [2022-01-19 07:15:09,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1056 places, 861 transitions, 23181 flow, removed 69 selfloop flow, removed 13 redundant places. [2022-01-19 07:15:09,222 INFO L242 Difference]: Finished difference. Result has 1069 places, 780 transitions, 20021 flow [2022-01-19 07:15:09,222 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=19419, PETRI_DIFFERENCE_MINUEND_PLACES=1027, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=774, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=597, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=20021, PETRI_PLACES=1069, PETRI_TRANSITIONS=780} [2022-01-19 07:15:09,222 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 882 predicate places. [2022-01-19 07:15:09,222 INFO L470 AbstractCegarLoop]: Abstraction has has 1069 places, 780 transitions, 20021 flow [2022-01-19 07:15:09,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:09,223 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:15:09,223 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:15:09,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable404 [2022-01-19 07:15:09,223 INFO L402 AbstractCegarLoop]: === Iteration 406 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:15:09,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:15:09,223 INFO L85 PathProgramCache]: Analyzing trace with hash -934155328, now seen corresponding path program 102 times [2022-01-19 07:15:09,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:15:09,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794379082] [2022-01-19 07:15:09,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:15:09,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:15:09,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:15:09,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:15:09,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:15:09,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794379082] [2022-01-19 07:15:09,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794379082] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:15:09,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:15:09,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:15:09,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782787594] [2022-01-19 07:15:09,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:15:09,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:15:09,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:15:09,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:15:09,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:15:09,324 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:15:09,324 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1069 places, 780 transitions, 20021 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:09,324 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:15:09,324 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:15:09,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:15:10,940 INFO L129 PetriNetUnfolder]: 701/2785 cut-off events. [2022-01-19 07:15:10,940 INFO L130 PetriNetUnfolder]: For 105487/105495 co-relation queries the response was YES. [2022-01-19 07:15:11,044 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24659 conditions, 2785 events. 701/2785 cut-off events. For 105487/105495 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 22923 event pairs, 282 based on Foata normal form. 1/2721 useless extension candidates. Maximal degree in co-relation 24220. Up to 582 conditions per place. [2022-01-19 07:15:11,057 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 421 selfloop transitions, 215 changer transitions 63/840 dead transitions. [2022-01-19 07:15:11,057 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1082 places, 840 transitions, 23011 flow [2022-01-19 07:15:11,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:15:11,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:15:11,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4658 transitions. [2022-01-19 07:15:11,059 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7648604269293925 [2022-01-19 07:15:11,059 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4658 transitions. [2022-01-19 07:15:11,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4658 transitions. [2022-01-19 07:15:11,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:15:11,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4658 transitions. [2022-01-19 07:15:11,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.6206896551724) internal successors, (4658), 29 states have internal predecessors, (4658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:11,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:11,066 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:11,066 INFO L186 Difference]: Start difference. First operand has 1069 places, 780 transitions, 20021 flow. Second operand 29 states and 4658 transitions. [2022-01-19 07:15:11,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1082 places, 840 transitions, 23011 flow [2022-01-19 07:15:12,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1068 places, 840 transitions, 22645 flow, removed 74 selfloop flow, removed 14 redundant places. [2022-01-19 07:15:12,081 INFO L242 Difference]: Finished difference. Result has 1079 places, 767 transitions, 19748 flow [2022-01-19 07:15:12,082 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=19688, PETRI_DIFFERENCE_MINUEND_PLACES=1040, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=780, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=19748, PETRI_PLACES=1079, PETRI_TRANSITIONS=767} [2022-01-19 07:15:12,082 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 892 predicate places. [2022-01-19 07:15:12,082 INFO L470 AbstractCegarLoop]: Abstraction has has 1079 places, 767 transitions, 19748 flow [2022-01-19 07:15:12,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:12,082 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:15:12,082 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:15:12,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable405 [2022-01-19 07:15:12,083 INFO L402 AbstractCegarLoop]: === Iteration 407 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:15:12,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:15:12,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1250679826, now seen corresponding path program 103 times [2022-01-19 07:15:12,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:15:12,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094483984] [2022-01-19 07:15:12,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:15:12,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:15:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:15:12,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:15:12,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:15:12,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094483984] [2022-01-19 07:15:12,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094483984] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:15:12,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:15:12,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:15:12,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834492632] [2022-01-19 07:15:12,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:15:12,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:15:12,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:15:12,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:15:12,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:15:12,222 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:15:12,222 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1079 places, 767 transitions, 19748 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:12,223 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:15:12,223 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:15:12,223 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:15:13,847 INFO L129 PetriNetUnfolder]: 685/2723 cut-off events. [2022-01-19 07:15:13,847 INFO L130 PetriNetUnfolder]: For 102911/102930 co-relation queries the response was YES. [2022-01-19 07:15:13,940 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24073 conditions, 2723 events. 685/2723 cut-off events. For 102911/102930 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 22272 event pairs, 274 based on Foata normal form. 3/2662 useless extension candidates. Maximal degree in co-relation 23633. Up to 582 conditions per place. [2022-01-19 07:15:13,951 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 404 selfloop transitions, 209 changer transitions 64/818 dead transitions. [2022-01-19 07:15:13,951 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1082 places, 818 transitions, 22396 flow [2022-01-19 07:15:13,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:15:13,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:15:13,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4811 transitions. [2022-01-19 07:15:13,953 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7636507936507937 [2022-01-19 07:15:13,953 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4811 transitions. [2022-01-19 07:15:13,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4811 transitions. [2022-01-19 07:15:13,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:15:13,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4811 transitions. [2022-01-19 07:15:13,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.36666666666667) internal successors, (4811), 30 states have internal predecessors, (4811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:13,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:13,959 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:13,959 INFO L186 Difference]: Start difference. First operand has 1079 places, 767 transitions, 19748 flow. Second operand 30 states and 4811 transitions. [2022-01-19 07:15:13,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1082 places, 818 transitions, 22396 flow [2022-01-19 07:15:14,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1052 places, 818 transitions, 21612 flow, removed 31 selfloop flow, removed 30 redundant places. [2022-01-19 07:15:14,943 INFO L242 Difference]: Finished difference. Result has 1062 places, 743 transitions, 18729 flow [2022-01-19 07:15:14,943 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=19026, PETRI_DIFFERENCE_MINUEND_PLACES=1023, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=767, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=558, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=18729, PETRI_PLACES=1062, PETRI_TRANSITIONS=743} [2022-01-19 07:15:14,943 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 875 predicate places. [2022-01-19 07:15:14,943 INFO L470 AbstractCegarLoop]: Abstraction has has 1062 places, 743 transitions, 18729 flow [2022-01-19 07:15:14,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:14,944 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:15:14,944 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:15:14,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable406 [2022-01-19 07:15:14,944 INFO L402 AbstractCegarLoop]: === Iteration 408 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:15:14,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:15:14,944 INFO L85 PathProgramCache]: Analyzing trace with hash -946939948, now seen corresponding path program 104 times [2022-01-19 07:15:14,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:15:14,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561171161] [2022-01-19 07:15:14,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:15:14,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:15:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:15:15,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:15:15,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:15:15,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561171161] [2022-01-19 07:15:15,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561171161] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:15:15,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:15:15,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:15:15,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8678558] [2022-01-19 07:15:15,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:15:15,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:15:15,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:15:15,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:15:15,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:15:15,042 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:15:15,043 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1062 places, 743 transitions, 18729 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:15,043 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:15:15,043 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:15:15,043 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:15:16,566 INFO L129 PetriNetUnfolder]: 670/2658 cut-off events. [2022-01-19 07:15:16,566 INFO L130 PetriNetUnfolder]: For 96661/96669 co-relation queries the response was YES. [2022-01-19 07:15:16,669 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23208 conditions, 2658 events. 670/2658 cut-off events. For 96661/96669 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 21463 event pairs, 272 based on Foata normal form. 1/2594 useless extension candidates. Maximal degree in co-relation 22776. Up to 583 conditions per place. [2022-01-19 07:15:16,680 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 431 selfloop transitions, 159 changer transitions 66/797 dead transitions. [2022-01-19 07:15:16,680 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1056 places, 797 transitions, 21388 flow [2022-01-19 07:15:16,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 07:15:16,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 07:15:16,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4503 transitions. [2022-01-19 07:15:16,683 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658163265306123 [2022-01-19 07:15:16,683 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4503 transitions. [2022-01-19 07:15:16,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4503 transitions. [2022-01-19 07:15:16,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:15:16,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4503 transitions. [2022-01-19 07:15:16,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.82142857142858) internal successors, (4503), 28 states have internal predecessors, (4503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:16,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:16,691 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:16,691 INFO L186 Difference]: Start difference. First operand has 1062 places, 743 transitions, 18729 flow. Second operand 28 states and 4503 transitions. [2022-01-19 07:15:16,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1056 places, 797 transitions, 21388 flow [2022-01-19 07:15:17,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1023 places, 797 transitions, 20444 flow, removed 28 selfloop flow, removed 33 redundant places. [2022-01-19 07:15:17,584 INFO L242 Difference]: Finished difference. Result has 1032 places, 718 transitions, 17410 flow [2022-01-19 07:15:17,584 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17845, PETRI_DIFFERENCE_MINUEND_PLACES=996, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=743, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=17410, PETRI_PLACES=1032, PETRI_TRANSITIONS=718} [2022-01-19 07:15:17,584 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 845 predicate places. [2022-01-19 07:15:17,584 INFO L470 AbstractCegarLoop]: Abstraction has has 1032 places, 718 transitions, 17410 flow [2022-01-19 07:15:17,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:17,585 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:15:17,585 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:15:17,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable407 [2022-01-19 07:15:17,585 INFO L402 AbstractCegarLoop]: === Iteration 409 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:15:17,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:15:17,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1468377812, now seen corresponding path program 105 times [2022-01-19 07:15:17,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:15:17,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15460074] [2022-01-19 07:15:17,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:15:17,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:15:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:15:17,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:15:17,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:15:17,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15460074] [2022-01-19 07:15:17,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15460074] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:15:17,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:15:17,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:15:17,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518711095] [2022-01-19 07:15:17,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:15:17,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:15:17,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:15:17,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:15:17,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:15:17,691 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:15:17,692 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1032 places, 718 transitions, 17410 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:17,692 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:15:17,692 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:15:17,692 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:15:19,160 INFO L129 PetriNetUnfolder]: 663/2639 cut-off events. [2022-01-19 07:15:19,160 INFO L130 PetriNetUnfolder]: For 91599/91618 co-relation queries the response was YES. [2022-01-19 07:15:19,234 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22621 conditions, 2639 events. 663/2639 cut-off events. For 91599/91618 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 21351 event pairs, 269 based on Foata normal form. 3/2577 useless extension candidates. Maximal degree in co-relation 22199. Up to 578 conditions per place. [2022-01-19 07:15:19,245 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 375 selfloop transitions, 215 changer transitions 61/792 dead transitions. [2022-01-19 07:15:19,245 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1027 places, 792 transitions, 20716 flow [2022-01-19 07:15:19,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:15:19,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:15:19,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4663 transitions. [2022-01-19 07:15:19,247 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7656814449917898 [2022-01-19 07:15:19,247 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4663 transitions. [2022-01-19 07:15:19,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4663 transitions. [2022-01-19 07:15:19,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:15:19,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4663 transitions. [2022-01-19 07:15:19,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.79310344827587) internal successors, (4663), 29 states have internal predecessors, (4663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:19,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:19,253 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:19,253 INFO L186 Difference]: Start difference. First operand has 1032 places, 718 transitions, 17410 flow. Second operand 29 states and 4663 transitions. [2022-01-19 07:15:19,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1027 places, 792 transitions, 20716 flow [2022-01-19 07:15:20,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 996 places, 792 transitions, 20013 flow, removed 32 selfloop flow, removed 31 redundant places. [2022-01-19 07:15:20,087 INFO L242 Difference]: Finished difference. Result has 1009 places, 720 transitions, 17346 flow [2022-01-19 07:15:20,088 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16775, PETRI_DIFFERENCE_MINUEND_PLACES=968, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=718, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=17346, PETRI_PLACES=1009, PETRI_TRANSITIONS=720} [2022-01-19 07:15:20,088 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 822 predicate places. [2022-01-19 07:15:20,088 INFO L470 AbstractCegarLoop]: Abstraction has has 1009 places, 720 transitions, 17346 flow [2022-01-19 07:15:20,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:20,088 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:15:20,088 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:15:20,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable408 [2022-01-19 07:15:20,088 INFO L402 AbstractCegarLoop]: === Iteration 410 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:15:20,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:15:20,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1747538020, now seen corresponding path program 106 times [2022-01-19 07:15:20,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:15:20,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128338769] [2022-01-19 07:15:20,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:15:20,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:15:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:15:20,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:15:20,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:15:20,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128338769] [2022-01-19 07:15:20,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128338769] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:15:20,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:15:20,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:15:20,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106150022] [2022-01-19 07:15:20,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:15:20,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:15:20,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:15:20,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:15:20,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:15:20,201 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:15:20,202 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1009 places, 720 transitions, 17346 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:20,202 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:15:20,202 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:15:20,202 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:15:21,746 INFO L129 PetriNetUnfolder]: 658/2630 cut-off events. [2022-01-19 07:15:21,746 INFO L130 PetriNetUnfolder]: For 86799/86818 co-relation queries the response was YES. [2022-01-19 07:15:21,820 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22371 conditions, 2630 events. 658/2630 cut-off events. For 86799/86818 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 21214 event pairs, 261 based on Foata normal form. 3/2572 useless extension candidates. Maximal degree in co-relation 21954. Up to 580 conditions per place. [2022-01-19 07:15:21,829 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 388 selfloop transitions, 212 changer transitions 61/802 dead transitions. [2022-01-19 07:15:21,830 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1024 places, 802 transitions, 20922 flow [2022-01-19 07:15:21,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:15:21,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:15:21,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4819 transitions. [2022-01-19 07:15:21,832 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7649206349206349 [2022-01-19 07:15:21,832 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4819 transitions. [2022-01-19 07:15:21,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4819 transitions. [2022-01-19 07:15:21,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:15:21,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4819 transitions. [2022-01-19 07:15:21,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.63333333333333) internal successors, (4819), 30 states have internal predecessors, (4819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:21,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:21,838 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:21,838 INFO L186 Difference]: Start difference. First operand has 1009 places, 720 transitions, 17346 flow. Second operand 30 states and 4819 transitions. [2022-01-19 07:15:21,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1024 places, 802 transitions, 20922 flow [2022-01-19 07:15:22,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1007 places, 802 transitions, 20488 flow, removed 79 selfloop flow, removed 17 redundant places. [2022-01-19 07:15:22,658 INFO L242 Difference]: Finished difference. Result has 1020 places, 726 transitions, 17602 flow [2022-01-19 07:15:22,658 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16942, PETRI_DIFFERENCE_MINUEND_PLACES=978, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=720, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17602, PETRI_PLACES=1020, PETRI_TRANSITIONS=726} [2022-01-19 07:15:22,658 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 833 predicate places. [2022-01-19 07:15:22,659 INFO L470 AbstractCegarLoop]: Abstraction has has 1020 places, 726 transitions, 17602 flow [2022-01-19 07:15:22,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:22,659 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:15:22,659 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:15:22,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable409 [2022-01-19 07:15:22,659 INFO L402 AbstractCegarLoop]: === Iteration 411 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:15:22,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:15:22,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1504887180, now seen corresponding path program 107 times [2022-01-19 07:15:22,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:15:22,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890461914] [2022-01-19 07:15:22,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:15:22,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:15:22,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:15:22,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:15:22,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:15:22,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890461914] [2022-01-19 07:15:22,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890461914] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:15:22,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:15:22,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:15:22,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256749217] [2022-01-19 07:15:22,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:15:22,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:15:22,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:15:22,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:15:22,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:15:22,763 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:15:22,764 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1020 places, 726 transitions, 17602 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:22,764 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:15:22,764 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:15:22,764 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:15:24,243 INFO L129 PetriNetUnfolder]: 664/2647 cut-off events. [2022-01-19 07:15:24,244 INFO L130 PetriNetUnfolder]: For 87056/87075 co-relation queries the response was YES. [2022-01-19 07:15:24,326 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22631 conditions, 2647 events. 664/2647 cut-off events. For 87056/87075 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 21399 event pairs, 264 based on Foata normal form. 3/2588 useless extension candidates. Maximal degree in co-relation 22213. Up to 580 conditions per place. [2022-01-19 07:15:24,336 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 444 selfloop transitions, 164 changer transitions 59/808 dead transitions. [2022-01-19 07:15:24,336 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1034 places, 808 transitions, 21236 flow [2022-01-19 07:15:24,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:15:24,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:15:24,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4825 transitions. [2022-01-19 07:15:24,338 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658730158730159 [2022-01-19 07:15:24,338 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4825 transitions. [2022-01-19 07:15:24,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4825 transitions. [2022-01-19 07:15:24,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:15:24,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4825 transitions. [2022-01-19 07:15:24,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.83333333333334) internal successors, (4825), 30 states have internal predecessors, (4825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:24,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:24,344 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:24,344 INFO L186 Difference]: Start difference. First operand has 1020 places, 726 transitions, 17602 flow. Second operand 30 states and 4825 transitions. [2022-01-19 07:15:24,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1034 places, 808 transitions, 21236 flow [2022-01-19 07:15:25,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1021 places, 808 transitions, 20853 flow, removed 73 selfloop flow, removed 13 redundant places. [2022-01-19 07:15:25,165 INFO L242 Difference]: Finished difference. Result has 1035 places, 738 transitions, 18045 flow [2022-01-19 07:15:25,165 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17256, PETRI_DIFFERENCE_MINUEND_PLACES=992, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=18045, PETRI_PLACES=1035, PETRI_TRANSITIONS=738} [2022-01-19 07:15:25,165 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 848 predicate places. [2022-01-19 07:15:25,165 INFO L470 AbstractCegarLoop]: Abstraction has has 1035 places, 738 transitions, 18045 flow [2022-01-19 07:15:25,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:25,166 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:15:25,166 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:15:25,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable410 [2022-01-19 07:15:25,166 INFO L402 AbstractCegarLoop]: === Iteration 412 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:15:25,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:15:25,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1982064680, now seen corresponding path program 108 times [2022-01-19 07:15:25,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:15:25,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935223176] [2022-01-19 07:15:25,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:15:25,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:15:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:15:25,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:15:25,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:15:25,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935223176] [2022-01-19 07:15:25,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935223176] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:15:25,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:15:25,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:15:25,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838231483] [2022-01-19 07:15:25,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:15:25,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:15:25,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:15:25,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:15:25,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:15:25,267 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:15:25,268 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1035 places, 738 transitions, 18045 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:25,268 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:15:25,268 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:15:25,268 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:15:26,702 INFO L129 PetriNetUnfolder]: 659/2637 cut-off events. [2022-01-19 07:15:26,702 INFO L130 PetriNetUnfolder]: For 87873/87881 co-relation queries the response was YES. [2022-01-19 07:15:26,777 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22490 conditions, 2637 events. 659/2637 cut-off events. For 87873/87881 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 21254 event pairs, 266 based on Foata normal form. 1/2573 useless extension candidates. Maximal degree in co-relation 22067. Up to 580 conditions per place. [2022-01-19 07:15:26,787 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 445 selfloop transitions, 164 changer transitions 60/810 dead transitions. [2022-01-19 07:15:26,787 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1048 places, 810 transitions, 21436 flow [2022-01-19 07:15:26,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:15:26,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:15:26,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4669 transitions. [2022-01-19 07:15:26,789 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2022-01-19 07:15:26,789 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4669 transitions. [2022-01-19 07:15:26,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4669 transitions. [2022-01-19 07:15:26,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:15:26,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4669 transitions. [2022-01-19 07:15:26,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 161.0) internal successors, (4669), 29 states have internal predecessors, (4669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:26,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:26,795 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:26,795 INFO L186 Difference]: Start difference. First operand has 1035 places, 738 transitions, 18045 flow. Second operand 29 states and 4669 transitions. [2022-01-19 07:15:26,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1048 places, 810 transitions, 21436 flow [2022-01-19 07:15:27,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1035 places, 810 transitions, 21033 flow, removed 94 selfloop flow, removed 13 redundant places. [2022-01-19 07:15:27,656 INFO L242 Difference]: Finished difference. Result has 1048 places, 740 transitions, 18159 flow [2022-01-19 07:15:27,656 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17712, PETRI_DIFFERENCE_MINUEND_PLACES=1007, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=738, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=18159, PETRI_PLACES=1048, PETRI_TRANSITIONS=740} [2022-01-19 07:15:27,656 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 861 predicate places. [2022-01-19 07:15:27,656 INFO L470 AbstractCegarLoop]: Abstraction has has 1048 places, 740 transitions, 18159 flow [2022-01-19 07:15:27,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:27,657 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:15:27,657 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:15:27,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable411 [2022-01-19 07:15:27,657 INFO L402 AbstractCegarLoop]: === Iteration 413 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:15:27,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:15:27,657 INFO L85 PathProgramCache]: Analyzing trace with hash 226372248, now seen corresponding path program 109 times [2022-01-19 07:15:27,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:15:27,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486349912] [2022-01-19 07:15:27,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:15:27,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:15:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:15:27,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:15:27,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:15:27,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486349912] [2022-01-19 07:15:27,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486349912] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:15:27,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:15:27,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:15:27,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136197297] [2022-01-19 07:15:27,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:15:27,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:15:27,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:15:27,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:15:27,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:15:27,759 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:15:27,759 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1048 places, 740 transitions, 18159 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:27,759 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:15:27,760 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:15:27,760 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:15:29,289 INFO L129 PetriNetUnfolder]: 654/2625 cut-off events. [2022-01-19 07:15:29,289 INFO L130 PetriNetUnfolder]: For 88208/88216 co-relation queries the response was YES. [2022-01-19 07:15:29,362 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22275 conditions, 2625 events. 654/2625 cut-off events. For 88208/88216 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 21152 event pairs, 266 based on Foata normal form. 1/2561 useless extension candidates. Maximal degree in co-relation 21848. Up to 580 conditions per place. [2022-01-19 07:15:29,372 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 444 selfloop transitions, 151 changer transitions 63/799 dead transitions. [2022-01-19 07:15:29,372 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1063 places, 799 transitions, 21051 flow [2022-01-19 07:15:29,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:15:29,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:15:29,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4820 transitions. [2022-01-19 07:15:29,374 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.765079365079365 [2022-01-19 07:15:29,374 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4820 transitions. [2022-01-19 07:15:29,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4820 transitions. [2022-01-19 07:15:29,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:15:29,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4820 transitions. [2022-01-19 07:15:29,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.66666666666666) internal successors, (4820), 30 states have internal predecessors, (4820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:29,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:29,380 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:29,380 INFO L186 Difference]: Start difference. First operand has 1048 places, 740 transitions, 18159 flow. Second operand 30 states and 4820 transitions. [2022-01-19 07:15:29,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1063 places, 799 transitions, 21051 flow [2022-01-19 07:15:30,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1046 places, 799 transitions, 20627 flow, removed 72 selfloop flow, removed 17 redundant places. [2022-01-19 07:15:30,269 INFO L242 Difference]: Finished difference. Result has 1058 places, 727 transitions, 17743 flow [2022-01-19 07:15:30,269 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17785, PETRI_DIFFERENCE_MINUEND_PLACES=1017, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17743, PETRI_PLACES=1058, PETRI_TRANSITIONS=727} [2022-01-19 07:15:30,269 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 871 predicate places. [2022-01-19 07:15:30,269 INFO L470 AbstractCegarLoop]: Abstraction has has 1058 places, 727 transitions, 17743 flow [2022-01-19 07:15:30,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:30,270 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:15:30,270 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:15:30,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable412 [2022-01-19 07:15:30,270 INFO L402 AbstractCegarLoop]: === Iteration 414 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:15:30,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:15:30,270 INFO L85 PathProgramCache]: Analyzing trace with hash -469949110, now seen corresponding path program 110 times [2022-01-19 07:15:30,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:15:30,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769244004] [2022-01-19 07:15:30,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:15:30,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:15:30,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:15:30,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:15:30,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:15:30,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769244004] [2022-01-19 07:15:30,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769244004] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:15:30,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:15:30,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:15:30,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611893181] [2022-01-19 07:15:30,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:15:30,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:15:30,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:15:30,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:15:30,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:15:30,368 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:15:30,369 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1058 places, 727 transitions, 17743 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:30,369 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:15:30,369 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:15:30,369 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:15:31,876 INFO L129 PetriNetUnfolder]: 625/2514 cut-off events. [2022-01-19 07:15:31,876 INFO L130 PetriNetUnfolder]: For 85149/85168 co-relation queries the response was YES. [2022-01-19 07:15:31,950 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21241 conditions, 2514 events. 625/2514 cut-off events. For 85149/85168 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 19971 event pairs, 257 based on Foata normal form. 3/2453 useless extension candidates. Maximal degree in co-relation 20813. Up to 566 conditions per place. [2022-01-19 07:15:31,960 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 430 selfloop transitions, 129 changer transitions 65/765 dead transitions. [2022-01-19 07:15:31,960 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1059 places, 765 transitions, 19814 flow [2022-01-19 07:15:31,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:15:31,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:15:31,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4654 transitions. [2022-01-19 07:15:31,962 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7642036124794745 [2022-01-19 07:15:31,962 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4654 transitions. [2022-01-19 07:15:31,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4654 transitions. [2022-01-19 07:15:31,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:15:31,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4654 transitions. [2022-01-19 07:15:31,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.48275862068965) internal successors, (4654), 29 states have internal predecessors, (4654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:31,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:31,968 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:31,968 INFO L186 Difference]: Start difference. First operand has 1058 places, 727 transitions, 17743 flow. Second operand 29 states and 4654 transitions. [2022-01-19 07:15:31,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1059 places, 765 transitions, 19814 flow [2022-01-19 07:15:32,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1028 places, 765 transitions, 19266 flow, removed 36 selfloop flow, removed 31 redundant places. [2022-01-19 07:15:32,761 INFO L242 Difference]: Finished difference. Result has 1037 places, 691 transitions, 16382 flow [2022-01-19 07:15:32,762 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17239, PETRI_DIFFERENCE_MINUEND_PLACES=1000, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=727, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=598, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=16382, PETRI_PLACES=1037, PETRI_TRANSITIONS=691} [2022-01-19 07:15:32,762 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 850 predicate places. [2022-01-19 07:15:32,762 INFO L470 AbstractCegarLoop]: Abstraction has has 1037 places, 691 transitions, 16382 flow [2022-01-19 07:15:32,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:32,762 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:15:32,762 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:15:32,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable413 [2022-01-19 07:15:32,763 INFO L402 AbstractCegarLoop]: === Iteration 415 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:15:32,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:15:32,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1917258770, now seen corresponding path program 111 times [2022-01-19 07:15:32,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:15:32,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446024366] [2022-01-19 07:15:32,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:15:32,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:15:32,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:15:32,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:15:32,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:15:32,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446024366] [2022-01-19 07:15:32,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446024366] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:15:32,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:15:32,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:15:32,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032050407] [2022-01-19 07:15:32,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:15:32,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:15:32,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:15:32,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:15:32,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:15:32,867 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:15:32,868 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1037 places, 691 transitions, 16382 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:32,868 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:15:32,868 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:15:32,868 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:15:34,310 INFO L129 PetriNetUnfolder]: 618/2497 cut-off events. [2022-01-19 07:15:34,310 INFO L130 PetriNetUnfolder]: For 82268/82287 co-relation queries the response was YES. [2022-01-19 07:15:34,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20918 conditions, 2497 events. 618/2497 cut-off events. For 82268/82287 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 19836 event pairs, 252 based on Foata normal form. 3/2436 useless extension candidates. Maximal degree in co-relation 20500. Up to 561 conditions per place. [2022-01-19 07:15:34,386 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 404 selfloop transitions, 159 changer transitions 64/768 dead transitions. [2022-01-19 07:15:34,386 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1022 places, 768 transitions, 19727 flow [2022-01-19 07:15:34,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:15:34,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:15:34,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4820 transitions. [2022-01-19 07:15:34,388 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.765079365079365 [2022-01-19 07:15:34,388 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4820 transitions. [2022-01-19 07:15:34,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4820 transitions. [2022-01-19 07:15:34,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:15:34,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4820 transitions. [2022-01-19 07:15:34,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.66666666666666) internal successors, (4820), 30 states have internal predecessors, (4820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:34,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:34,394 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:34,394 INFO L186 Difference]: Start difference. First operand has 1037 places, 691 transitions, 16382 flow. Second operand 30 states and 4820 transitions. [2022-01-19 07:15:34,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1022 places, 768 transitions, 19727 flow [2022-01-19 07:15:35,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 989 places, 768 transitions, 18981 flow, removed 37 selfloop flow, removed 33 redundant places. [2022-01-19 07:15:35,183 INFO L242 Difference]: Finished difference. Result has 997 places, 691 transitions, 16098 flow [2022-01-19 07:15:35,184 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15757, PETRI_DIFFERENCE_MINUEND_PLACES=960, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=16098, PETRI_PLACES=997, PETRI_TRANSITIONS=691} [2022-01-19 07:15:35,184 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 810 predicate places. [2022-01-19 07:15:35,184 INFO L470 AbstractCegarLoop]: Abstraction has has 997 places, 691 transitions, 16098 flow [2022-01-19 07:15:35,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:35,184 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:15:35,184 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:15:35,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable414 [2022-01-19 07:15:35,184 INFO L402 AbstractCegarLoop]: === Iteration 416 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:15:35,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:15:35,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1609704840, now seen corresponding path program 112 times [2022-01-19 07:15:35,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:15:35,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367176537] [2022-01-19 07:15:35,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:15:35,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:15:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:15:35,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:15:35,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:15:35,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367176537] [2022-01-19 07:15:35,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367176537] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:15:35,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:15:35,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:15:35,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627368395] [2022-01-19 07:15:35,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:15:35,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:15:35,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:15:35,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:15:35,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:15:35,284 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:15:35,285 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 997 places, 691 transitions, 16098 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:35,285 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:15:35,285 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:15:35,285 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:15:36,702 INFO L129 PetriNetUnfolder]: 612/2478 cut-off events. [2022-01-19 07:15:36,702 INFO L130 PetriNetUnfolder]: For 76977/76985 co-relation queries the response was YES. [2022-01-19 07:15:36,784 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20457 conditions, 2478 events. 612/2478 cut-off events. For 76977/76985 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 19627 event pairs, 253 based on Foata normal form. 1/2414 useless extension candidates. Maximal degree in co-relation 20051. Up to 563 conditions per place. [2022-01-19 07:15:36,793 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 381 selfloop transitions, 180 changer transitions 59/761 dead transitions. [2022-01-19 07:15:36,793 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1011 places, 761 transitions, 19221 flow [2022-01-19 07:15:36,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:15:36,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:15:36,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4817 transitions. [2022-01-19 07:15:36,795 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646031746031746 [2022-01-19 07:15:36,795 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4817 transitions. [2022-01-19 07:15:36,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4817 transitions. [2022-01-19 07:15:36,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:15:36,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4817 transitions. [2022-01-19 07:15:36,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.56666666666666) internal successors, (4817), 30 states have internal predecessors, (4817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:36,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:36,801 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:36,801 INFO L186 Difference]: Start difference. First operand has 997 places, 691 transitions, 16098 flow. Second operand 30 states and 4817 transitions. [2022-01-19 07:15:36,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1011 places, 761 transitions, 19221 flow [2022-01-19 07:15:37,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 991 places, 761 transitions, 18806 flow, removed 78 selfloop flow, removed 20 redundant places. [2022-01-19 07:15:37,500 INFO L242 Difference]: Finished difference. Result has 1001 places, 692 transitions, 16159 flow [2022-01-19 07:15:37,500 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15720, PETRI_DIFFERENCE_MINUEND_PLACES=962, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=16159, PETRI_PLACES=1001, PETRI_TRANSITIONS=692} [2022-01-19 07:15:37,500 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 814 predicate places. [2022-01-19 07:15:37,500 INFO L470 AbstractCegarLoop]: Abstraction has has 1001 places, 692 transitions, 16159 flow [2022-01-19 07:15:37,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:37,501 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:15:37,501 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:15:37,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable415 [2022-01-19 07:15:37,501 INFO L402 AbstractCegarLoop]: === Iteration 417 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:15:37,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:15:37,501 INFO L85 PathProgramCache]: Analyzing trace with hash 591208026, now seen corresponding path program 113 times [2022-01-19 07:15:37,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:15:37,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255145898] [2022-01-19 07:15:37,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:15:37,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:15:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:15:37,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:15:37,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:15:37,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255145898] [2022-01-19 07:15:37,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255145898] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:15:37,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:15:37,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:15:37,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589817156] [2022-01-19 07:15:37,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:15:37,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:15:37,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:15:37,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:15:37,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:15:37,599 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:15:37,600 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1001 places, 692 transitions, 16159 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:37,600 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:15:37,600 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:15:37,600 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:15:38,975 INFO L129 PetriNetUnfolder]: 590/2417 cut-off events. [2022-01-19 07:15:38,975 INFO L130 PetriNetUnfolder]: For 73367/73375 co-relation queries the response was YES. [2022-01-19 07:15:39,030 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19494 conditions, 2417 events. 590/2417 cut-off events. For 73367/73375 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 18982 event pairs, 249 based on Foata normal form. 1/2355 useless extension candidates. Maximal degree in co-relation 19092. Up to 563 conditions per place. [2022-01-19 07:15:39,038 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 371 selfloop transitions, 152 changer transitions 65/729 dead transitions. [2022-01-19 07:15:39,038 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1013 places, 729 transitions, 18065 flow [2022-01-19 07:15:39,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 07:15:39,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 07:15:39,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4494 transitions. [2022-01-19 07:15:39,040 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2022-01-19 07:15:39,040 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4494 transitions. [2022-01-19 07:15:39,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4494 transitions. [2022-01-19 07:15:39,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:15:39,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4494 transitions. [2022-01-19 07:15:39,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.5) internal successors, (4494), 28 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:39,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:39,046 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:39,046 INFO L186 Difference]: Start difference. First operand has 1001 places, 692 transitions, 16159 flow. Second operand 28 states and 4494 transitions. [2022-01-19 07:15:39,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1013 places, 729 transitions, 18065 flow [2022-01-19 07:15:39,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1000 places, 729 transitions, 17735 flow, removed 68 selfloop flow, removed 13 redundant places. [2022-01-19 07:15:39,796 INFO L242 Difference]: Finished difference. Result has 1008 places, 655 transitions, 14929 flow [2022-01-19 07:15:39,796 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15846, PETRI_DIFFERENCE_MINUEND_PLACES=973, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=14929, PETRI_PLACES=1008, PETRI_TRANSITIONS=655} [2022-01-19 07:15:39,797 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 821 predicate places. [2022-01-19 07:15:39,797 INFO L470 AbstractCegarLoop]: Abstraction has has 1008 places, 655 transitions, 14929 flow [2022-01-19 07:15:39,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:39,797 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:15:39,797 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:15:39,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable416 [2022-01-19 07:15:39,797 INFO L402 AbstractCegarLoop]: === Iteration 418 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:15:39,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:15:39,797 INFO L85 PathProgramCache]: Analyzing trace with hash 799016550, now seen corresponding path program 114 times [2022-01-19 07:15:39,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:15:39,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383274843] [2022-01-19 07:15:39,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:15:39,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:15:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:15:39,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:15:39,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:15:39,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383274843] [2022-01-19 07:15:39,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383274843] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:15:39,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:15:39,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:15:39,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322369935] [2022-01-19 07:15:39,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:15:39,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:15:39,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:15:39,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:15:39,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:15:39,898 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:15:39,899 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1008 places, 655 transitions, 14929 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:39,899 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:15:39,899 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:15:39,899 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:15:41,217 INFO L129 PetriNetUnfolder]: 560/2315 cut-off events. [2022-01-19 07:15:41,217 INFO L130 PetriNetUnfolder]: For 70467/70486 co-relation queries the response was YES. [2022-01-19 07:15:41,280 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18462 conditions, 2315 events. 560/2315 cut-off events. For 70467/70486 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 17888 event pairs, 236 based on Foata normal form. 3/2260 useless extension candidates. Maximal degree in co-relation 18061. Up to 549 conditions per place. [2022-01-19 07:15:41,288 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 298 selfloop transitions, 186 changer transitions 68/693 dead transitions. [2022-01-19 07:15:41,288 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 993 places, 693 transitions, 16787 flow [2022-01-19 07:15:41,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 07:15:41,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 07:15:41,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4335 transitions. [2022-01-19 07:15:41,290 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7645502645502645 [2022-01-19 07:15:41,290 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4335 transitions. [2022-01-19 07:15:41,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4335 transitions. [2022-01-19 07:15:41,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:15:41,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4335 transitions. [2022-01-19 07:15:41,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 160.55555555555554) internal successors, (4335), 27 states have internal predecessors, (4335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:41,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:41,296 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:41,296 INFO L186 Difference]: Start difference. First operand has 1008 places, 655 transitions, 14929 flow. Second operand 27 states and 4335 transitions. [2022-01-19 07:15:41,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 993 places, 693 transitions, 16787 flow [2022-01-19 07:15:41,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 960 places, 693 transitions, 15829 flow, removed 30 selfloop flow, removed 33 redundant places. [2022-01-19 07:15:41,927 INFO L242 Difference]: Finished difference. Result has 966 places, 611 transitions, 13053 flow [2022-01-19 07:15:41,928 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14019, PETRI_DIFFERENCE_MINUEND_PLACES=934, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=13053, PETRI_PLACES=966, PETRI_TRANSITIONS=611} [2022-01-19 07:15:41,928 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 779 predicate places. [2022-01-19 07:15:41,928 INFO L470 AbstractCegarLoop]: Abstraction has has 966 places, 611 transitions, 13053 flow [2022-01-19 07:15:41,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:41,928 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:15:41,928 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:15:41,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable417 [2022-01-19 07:15:41,928 INFO L402 AbstractCegarLoop]: === Iteration 419 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:15:41,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:15:41,929 INFO L85 PathProgramCache]: Analyzing trace with hash -79568368, now seen corresponding path program 115 times [2022-01-19 07:15:41,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:15:41,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935300412] [2022-01-19 07:15:41,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:15:41,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:15:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:15:42,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:15:42,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:15:42,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935300412] [2022-01-19 07:15:42,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935300412] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:15:42,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:15:42,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:15:42,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813557916] [2022-01-19 07:15:42,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:15:42,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:15:42,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:15:42,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:15:42,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:15:42,033 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:15:42,034 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 966 places, 611 transitions, 13053 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:42,034 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:15:42,034 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:15:42,034 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:15:43,359 INFO L129 PetriNetUnfolder]: 566/2340 cut-off events. [2022-01-19 07:15:43,360 INFO L130 PetriNetUnfolder]: For 68508/68516 co-relation queries the response was YES. [2022-01-19 07:15:43,422 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18334 conditions, 2340 events. 566/2340 cut-off events. For 68508/68516 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 18130 event pairs, 242 based on Foata normal form. 1/2283 useless extension candidates. Maximal degree in co-relation 17944. Up to 549 conditions per place. [2022-01-19 07:15:43,430 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 333 selfloop transitions, 161 changer transitions 59/694 dead transitions. [2022-01-19 07:15:43,430 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 945 places, 694 transitions, 16512 flow [2022-01-19 07:15:43,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:15:43,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:15:43,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4663 transitions. [2022-01-19 07:15:43,432 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7656814449917898 [2022-01-19 07:15:43,432 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4663 transitions. [2022-01-19 07:15:43,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4663 transitions. [2022-01-19 07:15:43,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:15:43,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4663 transitions. [2022-01-19 07:15:43,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.79310344827587) internal successors, (4663), 29 states have internal predecessors, (4663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:43,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:43,532 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:43,532 INFO L186 Difference]: Start difference. First operand has 966 places, 611 transitions, 13053 flow. Second operand 29 states and 4663 transitions. [2022-01-19 07:15:43,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 945 places, 694 transitions, 16512 flow [2022-01-19 07:15:44,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 904 places, 694 transitions, 14852 flow, removed 30 selfloop flow, removed 41 redundant places. [2022-01-19 07:15:44,103 INFO L242 Difference]: Finished difference. Result has 918 places, 623 transitions, 12386 flow [2022-01-19 07:15:44,104 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11626, PETRI_DIFFERENCE_MINUEND_PLACES=876, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=12386, PETRI_PLACES=918, PETRI_TRANSITIONS=623} [2022-01-19 07:15:44,104 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 731 predicate places. [2022-01-19 07:15:44,104 INFO L470 AbstractCegarLoop]: Abstraction has has 918 places, 623 transitions, 12386 flow [2022-01-19 07:15:44,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:44,104 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:15:44,104 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:15:44,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable418 [2022-01-19 07:15:44,105 INFO L402 AbstractCegarLoop]: === Iteration 420 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:15:44,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:15:44,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1466330378, now seen corresponding path program 116 times [2022-01-19 07:15:44,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:15:44,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263891937] [2022-01-19 07:15:44,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:15:44,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:15:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:15:44,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:15:44,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:15:44,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263891937] [2022-01-19 07:15:44,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263891937] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:15:44,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:15:44,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:15:44,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892090869] [2022-01-19 07:15:44,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:15:44,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:15:44,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:15:44,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:15:44,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:15:44,215 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:15:44,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 918 places, 623 transitions, 12386 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:44,216 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:15:44,216 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:15:44,216 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:15:45,408 INFO L129 PetriNetUnfolder]: 571/2345 cut-off events. [2022-01-19 07:15:45,408 INFO L130 PetriNetUnfolder]: For 59585/59606 co-relation queries the response was YES. [2022-01-19 07:15:45,470 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17811 conditions, 2345 events. 571/2345 cut-off events. For 59585/59606 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 18179 event pairs, 239 based on Foata normal form. 3/2291 useless extension candidates. Maximal degree in co-relation 17428. Up to 552 conditions per place. [2022-01-19 07:15:45,479 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 343 selfloop transitions, 161 changer transitions 60/705 dead transitions. [2022-01-19 07:15:45,479 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 932 places, 705 transitions, 15720 flow [2022-01-19 07:15:45,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:15:45,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:15:45,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4667 transitions. [2022-01-19 07:15:45,481 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7663382594417077 [2022-01-19 07:15:45,481 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4667 transitions. [2022-01-19 07:15:45,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4667 transitions. [2022-01-19 07:15:45,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:15:45,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4667 transitions. [2022-01-19 07:15:45,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.93103448275863) internal successors, (4667), 29 states have internal predecessors, (4667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:45,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:45,487 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:45,487 INFO L186 Difference]: Start difference. First operand has 918 places, 623 transitions, 12386 flow. Second operand 29 states and 4667 transitions. [2022-01-19 07:15:45,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 932 places, 705 transitions, 15720 flow [2022-01-19 07:15:46,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 919 places, 705 transitions, 15349 flow, removed 67 selfloop flow, removed 13 redundant places. [2022-01-19 07:15:46,058 INFO L242 Difference]: Finished difference. Result has 932 places, 634 transitions, 12837 flow [2022-01-19 07:15:46,058 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12079, PETRI_DIFFERENCE_MINUEND_PLACES=891, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=12837, PETRI_PLACES=932, PETRI_TRANSITIONS=634} [2022-01-19 07:15:46,058 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 745 predicate places. [2022-01-19 07:15:46,058 INFO L470 AbstractCegarLoop]: Abstraction has has 932 places, 634 transitions, 12837 flow [2022-01-19 07:15:46,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:46,059 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:15:46,059 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:15:46,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable419 [2022-01-19 07:15:46,059 INFO L402 AbstractCegarLoop]: === Iteration 421 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:15:46,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:15:46,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1328887584, now seen corresponding path program 117 times [2022-01-19 07:15:46,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:15:46,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279497151] [2022-01-19 07:15:46,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:15:46,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:15:46,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:15:46,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:15:46,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:15:46,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279497151] [2022-01-19 07:15:46,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279497151] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:15:46,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:15:46,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:15:46,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145045242] [2022-01-19 07:15:46,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:15:46,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:15:46,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:15:46,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:15:46,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:15:46,162 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:15:46,162 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 932 places, 634 transitions, 12837 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:46,162 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:15:46,163 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:15:46,163 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:15:47,450 INFO L129 PetriNetUnfolder]: 555/2293 cut-off events. [2022-01-19 07:15:47,450 INFO L130 PetriNetUnfolder]: For 58570/58589 co-relation queries the response was YES. [2022-01-19 07:15:47,520 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17296 conditions, 2293 events. 555/2293 cut-off events. For 58570/58589 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 17646 event pairs, 233 based on Foata normal form. 3/2242 useless extension candidates. Maximal degree in co-relation 16908. Up to 554 conditions per place. [2022-01-19 07:15:47,528 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 310 selfloop transitions, 170 changer transitions 66/687 dead transitions. [2022-01-19 07:15:47,528 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 945 places, 687 transitions, 15155 flow [2022-01-19 07:15:47,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 07:15:47,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 07:15:47,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4497 transitions. [2022-01-19 07:15:47,530 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764795918367347 [2022-01-19 07:15:47,530 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4497 transitions. [2022-01-19 07:15:47,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4497 transitions. [2022-01-19 07:15:47,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:15:47,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4497 transitions. [2022-01-19 07:15:47,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.60714285714286) internal successors, (4497), 28 states have internal predecessors, (4497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:47,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:47,536 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:47,536 INFO L186 Difference]: Start difference. First operand has 932 places, 634 transitions, 12837 flow. Second operand 28 states and 4497 transitions. [2022-01-19 07:15:47,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 945 places, 687 transitions, 15155 flow [2022-01-19 07:15:48,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 932 places, 687 transitions, 14773 flow, removed 84 selfloop flow, removed 13 redundant places. [2022-01-19 07:15:48,114 INFO L242 Difference]: Finished difference. Result has 941 places, 609 transitions, 12097 flow [2022-01-19 07:15:48,114 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12490, PETRI_DIFFERENCE_MINUEND_PLACES=905, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=12097, PETRI_PLACES=941, PETRI_TRANSITIONS=609} [2022-01-19 07:15:48,114 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 754 predicate places. [2022-01-19 07:15:48,114 INFO L470 AbstractCegarLoop]: Abstraction has has 941 places, 609 transitions, 12097 flow [2022-01-19 07:15:48,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:48,114 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:15:48,114 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:15:48,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable420 [2022-01-19 07:15:48,115 INFO L402 AbstractCegarLoop]: === Iteration 422 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:15:48,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:15:48,115 INFO L85 PathProgramCache]: Analyzing trace with hash -683318672, now seen corresponding path program 118 times [2022-01-19 07:15:48,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:15:48,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40293190] [2022-01-19 07:15:48,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:15:48,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:15:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:15:48,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:15:48,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:15:48,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40293190] [2022-01-19 07:15:48,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40293190] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:15:48,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:15:48,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:15:48,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846782148] [2022-01-19 07:15:48,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:15:48,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:15:48,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:15:48,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:15:48,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:15:48,218 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:15:48,219 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 941 places, 609 transitions, 12097 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:48,219 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:15:48,219 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:15:48,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:15:49,472 INFO L129 PetriNetUnfolder]: 537/2264 cut-off events. [2022-01-19 07:15:49,472 INFO L130 PetriNetUnfolder]: For 56015/56023 co-relation queries the response was YES. [2022-01-19 07:15:49,539 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16734 conditions, 2264 events. 537/2264 cut-off events. For 56015/56023 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 17389 event pairs, 237 based on Foata normal form. 1/2211 useless extension candidates. Maximal degree in co-relation 16345. Up to 546 conditions per place. [2022-01-19 07:15:49,546 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 323 selfloop transitions, 132 changer transitions 66/662 dead transitions. [2022-01-19 07:15:49,546 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 937 places, 662 transitions, 14356 flow [2022-01-19 07:15:49,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:15:49,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:15:49,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4814 transitions. [2022-01-19 07:15:49,548 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7641269841269841 [2022-01-19 07:15:49,548 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4814 transitions. [2022-01-19 07:15:49,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4814 transitions. [2022-01-19 07:15:49,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:15:49,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4814 transitions. [2022-01-19 07:15:49,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.46666666666667) internal successors, (4814), 30 states have internal predecessors, (4814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:49,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:49,554 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:49,555 INFO L186 Difference]: Start difference. First operand has 941 places, 609 transitions, 12097 flow. Second operand 30 states and 4814 transitions. [2022-01-19 07:15:49,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 937 places, 662 transitions, 14356 flow [2022-01-19 07:15:50,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 904 places, 662 transitions, 13487 flow, removed 40 selfloop flow, removed 33 redundant places. [2022-01-19 07:15:50,135 INFO L242 Difference]: Finished difference. Result has 913 places, 587 transitions, 10933 flow [2022-01-19 07:15:50,136 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11311, PETRI_DIFFERENCE_MINUEND_PLACES=875, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=10933, PETRI_PLACES=913, PETRI_TRANSITIONS=587} [2022-01-19 07:15:50,136 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 726 predicate places. [2022-01-19 07:15:50,136 INFO L470 AbstractCegarLoop]: Abstraction has has 913 places, 587 transitions, 10933 flow [2022-01-19 07:15:50,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:50,136 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:15:50,136 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:15:50,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable421 [2022-01-19 07:15:50,136 INFO L402 AbstractCegarLoop]: === Iteration 423 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:15:50,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:15:50,137 INFO L85 PathProgramCache]: Analyzing trace with hash -2072216124, now seen corresponding path program 119 times [2022-01-19 07:15:50,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:15:50,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913368374] [2022-01-19 07:15:50,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:15:50,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:15:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:15:50,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:15:50,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:15:50,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913368374] [2022-01-19 07:15:50,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913368374] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:15:50,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:15:50,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:15:50,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510228391] [2022-01-19 07:15:50,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:15:50,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:15:50,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:15:50,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:15:50,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:15:50,246 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:15:50,247 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 913 places, 587 transitions, 10933 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:50,247 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:15:50,247 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:15:50,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:15:51,481 INFO L129 PetriNetUnfolder]: 541/2249 cut-off events. [2022-01-19 07:15:51,481 INFO L130 PetriNetUnfolder]: For 53144/53165 co-relation queries the response was YES. [2022-01-19 07:15:51,540 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16430 conditions, 2249 events. 541/2249 cut-off events. For 53144/53165 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 17198 event pairs, 230 based on Foata normal form. 3/2197 useless extension candidates. Maximal degree in co-relation 16051. Up to 546 conditions per place. [2022-01-19 07:15:51,548 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 336 selfloop transitions, 134 changer transitions 59/670 dead transitions. [2022-01-19 07:15:51,549 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 915 places, 670 transitions, 14138 flow [2022-01-19 07:15:51,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:15:51,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:15:51,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4823 transitions. [2022-01-19 07:15:51,551 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655555555555555 [2022-01-19 07:15:51,551 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4823 transitions. [2022-01-19 07:15:51,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4823 transitions. [2022-01-19 07:15:51,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:15:51,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4823 transitions. [2022-01-19 07:15:51,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.76666666666668) internal successors, (4823), 30 states have internal predecessors, (4823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:51,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:51,557 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:51,557 INFO L186 Difference]: Start difference. First operand has 913 places, 587 transitions, 10933 flow. Second operand 30 states and 4823 transitions. [2022-01-19 07:15:51,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 915 places, 670 transitions, 14138 flow [2022-01-19 07:15:52,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 885 places, 670 transitions, 13598 flow, removed 42 selfloop flow, removed 30 redundant places. [2022-01-19 07:15:52,064 INFO L242 Difference]: Finished difference. Result has 898 places, 600 transitions, 11213 flow [2022-01-19 07:15:52,064 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10499, PETRI_DIFFERENCE_MINUEND_PLACES=856, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=11213, PETRI_PLACES=898, PETRI_TRANSITIONS=600} [2022-01-19 07:15:52,064 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 711 predicate places. [2022-01-19 07:15:52,064 INFO L470 AbstractCegarLoop]: Abstraction has has 898 places, 600 transitions, 11213 flow [2022-01-19 07:15:52,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:52,065 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:15:52,065 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:15:52,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable422 [2022-01-19 07:15:52,065 INFO L402 AbstractCegarLoop]: === Iteration 424 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:15:52,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:15:52,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1321112952, now seen corresponding path program 120 times [2022-01-19 07:15:52,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:15:52,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653420099] [2022-01-19 07:15:52,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:15:52,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:15:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:15:52,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:15:52,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:15:52,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653420099] [2022-01-19 07:15:52,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653420099] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:15:52,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:15:52,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:15:52,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608795027] [2022-01-19 07:15:52,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:15:52,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:15:52,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:15:52,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:15:52,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:15:52,169 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:15:52,170 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 898 places, 600 transitions, 11213 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:52,170 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:15:52,170 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:15:52,170 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:15:53,333 INFO L129 PetriNetUnfolder]: 540/2272 cut-off events. [2022-01-19 07:15:53,333 INFO L130 PetriNetUnfolder]: For 52260/52268 co-relation queries the response was YES. [2022-01-19 07:15:53,483 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16441 conditions, 2272 events. 540/2272 cut-off events. For 52260/52268 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 17493 event pairs, 234 based on Foata normal form. 1/2218 useless extension candidates. Maximal degree in co-relation 16067. Up to 546 conditions per place. [2022-01-19 07:15:53,490 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 342 selfloop transitions, 133 changer transitions 59/675 dead transitions. [2022-01-19 07:15:53,491 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 911 places, 675 transitions, 14221 flow [2022-01-19 07:15:53,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:15:53,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:15:53,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4669 transitions. [2022-01-19 07:15:53,493 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2022-01-19 07:15:53,493 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4669 transitions. [2022-01-19 07:15:53,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4669 transitions. [2022-01-19 07:15:53,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:15:53,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4669 transitions. [2022-01-19 07:15:53,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 161.0) internal successors, (4669), 29 states have internal predecessors, (4669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:53,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:53,499 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:53,499 INFO L186 Difference]: Start difference. First operand has 898 places, 600 transitions, 11213 flow. Second operand 29 states and 4669 transitions. [2022-01-19 07:15:53,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 911 places, 675 transitions, 14221 flow [2022-01-19 07:15:54,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 899 places, 675 transitions, 13904 flow, removed 63 selfloop flow, removed 12 redundant places. [2022-01-19 07:15:54,019 INFO L242 Difference]: Finished difference. Result has 910 places, 606 transitions, 11462 flow [2022-01-19 07:15:54,019 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10958, PETRI_DIFFERENCE_MINUEND_PLACES=871, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=11462, PETRI_PLACES=910, PETRI_TRANSITIONS=606} [2022-01-19 07:15:54,019 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 723 predicate places. [2022-01-19 07:15:54,020 INFO L470 AbstractCegarLoop]: Abstraction has has 910 places, 606 transitions, 11462 flow [2022-01-19 07:15:54,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:54,020 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:15:54,020 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:15:54,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable423 [2022-01-19 07:15:54,020 INFO L402 AbstractCegarLoop]: === Iteration 425 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:15:54,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:15:54,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1852945630, now seen corresponding path program 121 times [2022-01-19 07:15:54,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:15:54,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201572971] [2022-01-19 07:15:54,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:15:54,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:15:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:15:54,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:15:54,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:15:54,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201572971] [2022-01-19 07:15:54,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201572971] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:15:54,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:15:54,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:15:54,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754686594] [2022-01-19 07:15:54,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:15:54,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:15:54,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:15:54,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:15:54,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:15:54,122 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:15:54,123 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 910 places, 606 transitions, 11462 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:54,123 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:15:54,123 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:15:54,123 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:15:55,334 INFO L129 PetriNetUnfolder]: 535/2251 cut-off events. [2022-01-19 07:15:55,334 INFO L130 PetriNetUnfolder]: For 51968/51976 co-relation queries the response was YES. [2022-01-19 07:15:55,393 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16220 conditions, 2251 events. 535/2251 cut-off events. For 51968/51976 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 17276 event pairs, 234 based on Foata normal form. 1/2197 useless extension candidates. Maximal degree in co-relation 15843. Up to 546 conditions per place. [2022-01-19 07:15:55,401 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 338 selfloop transitions, 123 changer transitions 64/666 dead transitions. [2022-01-19 07:15:55,401 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 924 places, 666 transitions, 13946 flow [2022-01-19 07:15:55,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:15:55,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:15:55,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4662 transitions. [2022-01-19 07:15:55,403 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655172413793103 [2022-01-19 07:15:55,404 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4662 transitions. [2022-01-19 07:15:55,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4662 transitions. [2022-01-19 07:15:55,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:15:55,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4662 transitions. [2022-01-19 07:15:55,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.75862068965517) internal successors, (4662), 29 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:55,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:55,410 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:55,410 INFO L186 Difference]: Start difference. First operand has 910 places, 606 transitions, 11462 flow. Second operand 29 states and 4662 transitions. [2022-01-19 07:15:55,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 924 places, 666 transitions, 13946 flow [2022-01-19 07:15:55,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 911 places, 666 transitions, 13602 flow, removed 57 selfloop flow, removed 13 redundant places. [2022-01-19 07:15:55,927 INFO L242 Difference]: Finished difference. Result has 922 places, 593 transitions, 11081 flow [2022-01-19 07:15:55,927 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11166, PETRI_DIFFERENCE_MINUEND_PLACES=883, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=11081, PETRI_PLACES=922, PETRI_TRANSITIONS=593} [2022-01-19 07:15:55,927 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 735 predicate places. [2022-01-19 07:15:55,927 INFO L470 AbstractCegarLoop]: Abstraction has has 922 places, 593 transitions, 11081 flow [2022-01-19 07:15:55,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:55,928 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:15:55,928 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:15:55,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable424 [2022-01-19 07:15:55,928 INFO L402 AbstractCegarLoop]: === Iteration 426 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:15:55,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:15:55,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1897543646, now seen corresponding path program 122 times [2022-01-19 07:15:55,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:15:55,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994762653] [2022-01-19 07:15:55,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:15:55,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:15:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:15:56,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:15:56,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:15:56,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994762653] [2022-01-19 07:15:56,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994762653] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:15:56,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:15:56,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:15:56,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093594029] [2022-01-19 07:15:56,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:15:56,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:15:56,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:15:56,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:15:56,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:15:56,030 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:15:56,030 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 922 places, 593 transitions, 11081 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:56,030 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:15:56,030 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:15:56,030 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:15:57,181 INFO L129 PetriNetUnfolder]: 510/2172 cut-off events. [2022-01-19 07:15:57,181 INFO L130 PetriNetUnfolder]: For 49513/49534 co-relation queries the response was YES. [2022-01-19 07:15:57,236 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15390 conditions, 2172 events. 510/2172 cut-off events. For 49513/49534 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 16428 event pairs, 224 based on Foata normal form. 3/2121 useless extension candidates. Maximal degree in co-relation 15010. Up to 533 conditions per place. [2022-01-19 07:15:57,243 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 325 selfloop transitions, 102 changer transitions 65/633 dead transitions. [2022-01-19 07:15:57,243 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 925 places, 633 transitions, 12879 flow [2022-01-19 07:15:57,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:15:57,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:15:57,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4815 transitions. [2022-01-19 07:15:57,245 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2022-01-19 07:15:57,245 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4815 transitions. [2022-01-19 07:15:57,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4815 transitions. [2022-01-19 07:15:57,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:15:57,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4815 transitions. [2022-01-19 07:15:57,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.5) internal successors, (4815), 30 states have internal predecessors, (4815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:57,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:57,251 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:57,251 INFO L186 Difference]: Start difference. First operand has 922 places, 593 transitions, 11081 flow. Second operand 30 states and 4815 transitions. [2022-01-19 07:15:57,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 925 places, 633 transitions, 12879 flow [2022-01-19 07:15:57,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 894 places, 633 transitions, 12410 flow, removed 37 selfloop flow, removed 31 redundant places. [2022-01-19 07:15:57,726 INFO L242 Difference]: Finished difference. Result has 899 places, 559 transitions, 9935 flow [2022-01-19 07:15:57,726 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10655, PETRI_DIFFERENCE_MINUEND_PLACES=865, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=9935, PETRI_PLACES=899, PETRI_TRANSITIONS=559} [2022-01-19 07:15:57,726 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 712 predicate places. [2022-01-19 07:15:57,726 INFO L470 AbstractCegarLoop]: Abstraction has has 899 places, 559 transitions, 9935 flow [2022-01-19 07:15:57,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:57,727 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:15:57,727 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:15:57,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable425 [2022-01-19 07:15:57,727 INFO L402 AbstractCegarLoop]: === Iteration 427 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:15:57,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:15:57,727 INFO L85 PathProgramCache]: Analyzing trace with hash -834924814, now seen corresponding path program 123 times [2022-01-19 07:15:57,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:15:57,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637102088] [2022-01-19 07:15:57,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:15:57,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:15:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:15:57,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:15:57,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:15:57,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637102088] [2022-01-19 07:15:57,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637102088] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:15:57,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:15:57,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:15:57,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355621184] [2022-01-19 07:15:57,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:15:57,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:15:57,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:15:57,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:15:57,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:15:57,830 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:15:57,831 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 899 places, 559 transitions, 9935 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:57,831 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:15:57,831 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:15:57,831 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:15:59,005 INFO L129 PetriNetUnfolder]: 500/2142 cut-off events. [2022-01-19 07:15:59,006 INFO L130 PetriNetUnfolder]: For 47216/47237 co-relation queries the response was YES. [2022-01-19 07:15:59,051 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14916 conditions, 2142 events. 500/2142 cut-off events. For 47216/47237 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 16132 event pairs, 224 based on Foata normal form. 3/2092 useless extension candidates. Maximal degree in co-relation 14550. Up to 528 conditions per place. [2022-01-19 07:15:59,057 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 285 selfloop transitions, 129 changer transitions 61/616 dead transitions. [2022-01-19 07:15:59,057 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 893 places, 616 transitions, 12196 flow [2022-01-19 07:15:59,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:15:59,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:15:59,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4805 transitions. [2022-01-19 07:15:59,059 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7626984126984127 [2022-01-19 07:15:59,059 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4805 transitions. [2022-01-19 07:15:59,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4805 transitions. [2022-01-19 07:15:59,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:15:59,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4805 transitions. [2022-01-19 07:15:59,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.16666666666666) internal successors, (4805), 30 states have internal predecessors, (4805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:59,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:59,065 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:59,065 INFO L186 Difference]: Start difference. First operand has 899 places, 559 transitions, 9935 flow. Second operand 30 states and 4805 transitions. [2022-01-19 07:15:59,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 893 places, 616 transitions, 12196 flow [2022-01-19 07:15:59,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 845 places, 616 transitions, 11500 flow, removed 32 selfloop flow, removed 48 redundant places. [2022-01-19 07:15:59,466 INFO L242 Difference]: Finished difference. Result has 857 places, 546 transitions, 9300 flow [2022-01-19 07:15:59,467 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9319, PETRI_DIFFERENCE_MINUEND_PLACES=816, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=9300, PETRI_PLACES=857, PETRI_TRANSITIONS=546} [2022-01-19 07:15:59,467 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 670 predicate places. [2022-01-19 07:15:59,467 INFO L470 AbstractCegarLoop]: Abstraction has has 857 places, 546 transitions, 9300 flow [2022-01-19 07:15:59,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:59,467 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:15:59,467 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:15:59,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable426 [2022-01-19 07:15:59,468 INFO L402 AbstractCegarLoop]: === Iteration 428 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:15:59,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:15:59,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1225055254, now seen corresponding path program 124 times [2022-01-19 07:15:59,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:15:59,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48688771] [2022-01-19 07:15:59,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:15:59,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:15:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:15:59,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:15:59,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:15:59,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48688771] [2022-01-19 07:15:59,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48688771] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:15:59,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:15:59,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:15:59,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093401601] [2022-01-19 07:15:59,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:15:59,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:15:59,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:15:59,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:15:59,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:15:59,568 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:15:59,569 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 857 places, 546 transitions, 9300 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:15:59,569 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:15:59,569 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:15:59,569 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:16:00,562 INFO L129 PetriNetUnfolder]: 475/2062 cut-off events. [2022-01-19 07:16:00,562 INFO L130 PetriNetUnfolder]: For 41362/41370 co-relation queries the response was YES. [2022-01-19 07:16:00,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13892 conditions, 2062 events. 475/2062 cut-off events. For 41362/41370 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 15289 event pairs, 223 based on Foata normal form. 1/2011 useless extension candidates. Maximal degree in co-relation 13546. Up to 517 conditions per place. [2022-01-19 07:16:00,626 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 292 selfloop transitions, 86 changer transitions 64/583 dead transitions. [2022-01-19 07:16:00,626 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 857 places, 583 transitions, 10889 flow [2022-01-19 07:16:00,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 07:16:00,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 07:16:00,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4496 transitions. [2022-01-19 07:16:00,628 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646258503401361 [2022-01-19 07:16:00,628 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4496 transitions. [2022-01-19 07:16:00,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4496 transitions. [2022-01-19 07:16:00,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:16:00,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4496 transitions. [2022-01-19 07:16:00,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.57142857142858) internal successors, (4496), 28 states have internal predecessors, (4496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:00,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:00,634 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:00,634 INFO L186 Difference]: Start difference. First operand has 857 places, 546 transitions, 9300 flow. Second operand 28 states and 4496 transitions. [2022-01-19 07:16:00,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 857 places, 583 transitions, 10889 flow [2022-01-19 07:16:00,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 826 places, 583 transitions, 10393 flow, removed 29 selfloop flow, removed 31 redundant places. [2022-01-19 07:16:00,993 INFO L242 Difference]: Finished difference. Result has 834 places, 510 transitions, 8155 flow [2022-01-19 07:16:00,993 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8840, PETRI_DIFFERENCE_MINUEND_PLACES=799, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=8155, PETRI_PLACES=834, PETRI_TRANSITIONS=510} [2022-01-19 07:16:00,994 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 647 predicate places. [2022-01-19 07:16:00,994 INFO L470 AbstractCegarLoop]: Abstraction has has 834 places, 510 transitions, 8155 flow [2022-01-19 07:16:00,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:00,994 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:16:00,994 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:16:00,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable427 [2022-01-19 07:16:00,994 INFO L402 AbstractCegarLoop]: === Iteration 429 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:16:00,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:16:00,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1380948960, now seen corresponding path program 125 times [2022-01-19 07:16:00,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:16:00,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738870481] [2022-01-19 07:16:00,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:16:00,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:16:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:16:01,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:16:01,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:16:01,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738870481] [2022-01-19 07:16:01,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738870481] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:16:01,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:16:01,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:16:01,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977117290] [2022-01-19 07:16:01,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:16:01,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:16:01,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:16:01,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:16:01,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:16:01,103 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:16:01,104 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 834 places, 510 transitions, 8155 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:01,104 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:16:01,104 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:16:01,104 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:16:02,130 INFO L129 PetriNetUnfolder]: 456/1996 cut-off events. [2022-01-19 07:16:02,130 INFO L130 PetriNetUnfolder]: For 39239/39247 co-relation queries the response was YES. [2022-01-19 07:16:02,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13185 conditions, 1996 events. 456/1996 cut-off events. For 39239/39247 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 14657 event pairs, 220 based on Foata normal form. 1/1944 useless extension candidates. Maximal degree in co-relation 12851. Up to 506 conditions per place. [2022-01-19 07:16:02,183 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 263 selfloop transitions, 91 changer transitions 62/557 dead transitions. [2022-01-19 07:16:02,183 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 821 places, 557 transitions, 9969 flow [2022-01-19 07:16:02,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 07:16:02,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 07:16:02,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4494 transitions. [2022-01-19 07:16:02,186 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2022-01-19 07:16:02,186 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4494 transitions. [2022-01-19 07:16:02,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4494 transitions. [2022-01-19 07:16:02,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:16:02,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4494 transitions. [2022-01-19 07:16:02,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.5) internal successors, (4494), 28 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:02,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:02,193 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:02,193 INFO L186 Difference]: Start difference. First operand has 834 places, 510 transitions, 8155 flow. Second operand 28 states and 4494 transitions. [2022-01-19 07:16:02,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 821 places, 557 transitions, 9969 flow [2022-01-19 07:16:02,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 788 places, 557 transitions, 9434 flow, removed 22 selfloop flow, removed 33 redundant places. [2022-01-19 07:16:02,495 INFO L242 Difference]: Finished difference. Result has 797 places, 485 transitions, 7339 flow [2022-01-19 07:16:02,495 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7698, PETRI_DIFFERENCE_MINUEND_PLACES=761, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=7339, PETRI_PLACES=797, PETRI_TRANSITIONS=485} [2022-01-19 07:16:02,495 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 610 predicate places. [2022-01-19 07:16:02,495 INFO L470 AbstractCegarLoop]: Abstraction has has 797 places, 485 transitions, 7339 flow [2022-01-19 07:16:02,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:02,496 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:16:02,496 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:16:02,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable428 [2022-01-19 07:16:02,496 INFO L402 AbstractCegarLoop]: === Iteration 430 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:16:02,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:16:02,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1899067544, now seen corresponding path program 126 times [2022-01-19 07:16:02,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:16:02,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368826356] [2022-01-19 07:16:02,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:16:02,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:16:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:16:02,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:16:02,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:16:02,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368826356] [2022-01-19 07:16:02,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368826356] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:16:02,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:16:02,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:16:02,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204033543] [2022-01-19 07:16:02,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:16:02,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:16:02,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:16:02,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:16:02,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:16:02,598 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:16:02,598 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 797 places, 485 transitions, 7339 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:02,598 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:16:02,598 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:16:02,598 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:16:03,521 INFO L129 PetriNetUnfolder]: 430/1911 cut-off events. [2022-01-19 07:16:03,521 INFO L130 PetriNetUnfolder]: For 34758/34766 co-relation queries the response was YES. [2022-01-19 07:16:03,556 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12332 conditions, 1911 events. 430/1911 cut-off events. For 34758/34766 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 13841 event pairs, 216 based on Foata normal form. 1/1859 useless extension candidates. Maximal degree in co-relation 12004. Up to 491 conditions per place. [2022-01-19 07:16:03,560 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 230 selfloop transitions, 86 changer transitions 64/521 dead transitions. [2022-01-19 07:16:03,560 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 790 places, 521 transitions, 8739 flow [2022-01-19 07:16:03,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 07:16:03,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 07:16:03,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4329 transitions. [2022-01-19 07:16:03,562 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7634920634920634 [2022-01-19 07:16:03,563 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4329 transitions. [2022-01-19 07:16:03,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4329 transitions. [2022-01-19 07:16:03,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:16:03,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4329 transitions. [2022-01-19 07:16:03,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 160.33333333333334) internal successors, (4329), 27 states have internal predecessors, (4329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:03,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:03,568 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:03,568 INFO L186 Difference]: Start difference. First operand has 797 places, 485 transitions, 7339 flow. Second operand 27 states and 4329 transitions. [2022-01-19 07:16:03,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 790 places, 521 transitions, 8739 flow [2022-01-19 07:16:03,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 761 places, 521 transitions, 8266 flow, removed 25 selfloop flow, removed 29 redundant places. [2022-01-19 07:16:03,818 INFO L242 Difference]: Finished difference. Result has 768 places, 448 transitions, 6267 flow [2022-01-19 07:16:03,818 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6914, PETRI_DIFFERENCE_MINUEND_PLACES=735, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=6267, PETRI_PLACES=768, PETRI_TRANSITIONS=448} [2022-01-19 07:16:03,818 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 581 predicate places. [2022-01-19 07:16:03,818 INFO L470 AbstractCegarLoop]: Abstraction has has 768 places, 448 transitions, 6267 flow [2022-01-19 07:16:03,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:03,819 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:16:03,819 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:16:03,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable429 [2022-01-19 07:16:03,819 INFO L402 AbstractCegarLoop]: === Iteration 431 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:16:03,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:16:03,819 INFO L85 PathProgramCache]: Analyzing trace with hash 870679578, now seen corresponding path program 127 times [2022-01-19 07:16:03,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:16:03,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112395429] [2022-01-19 07:16:03,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:16:03,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:16:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:16:03,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:16:03,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:16:03,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112395429] [2022-01-19 07:16:03,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112395429] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:16:03,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:16:03,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:16:03,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122978409] [2022-01-19 07:16:03,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:16:03,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:16:03,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:16:03,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:16:03,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:16:03,924 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:16:03,925 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 768 places, 448 transitions, 6267 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:03,925 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:16:03,925 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:16:03,925 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:16:04,770 INFO L129 PetriNetUnfolder]: 402/1803 cut-off events. [2022-01-19 07:16:04,770 INFO L130 PetriNetUnfolder]: For 30985/30993 co-relation queries the response was YES. [2022-01-19 07:16:04,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11377 conditions, 1803 events. 402/1803 cut-off events. For 30985/30993 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 12757 event pairs, 213 based on Foata normal form. 1/1752 useless extension candidates. Maximal degree in co-relation 11056. Up to 476 conditions per place. [2022-01-19 07:16:04,821 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 216 selfloop transitions, 56 changer transitions 64/477 dead transitions. [2022-01-19 07:16:04,821 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 756 places, 477 transitions, 7408 flow [2022-01-19 07:16:04,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:16:04,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:16:04,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4634 transitions. [2022-01-19 07:16:04,823 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7609195402298851 [2022-01-19 07:16:04,823 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4634 transitions. [2022-01-19 07:16:04,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4634 transitions. [2022-01-19 07:16:04,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:16:04,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4634 transitions. [2022-01-19 07:16:04,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 159.79310344827587) internal successors, (4634), 29 states have internal predecessors, (4634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:04,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:04,829 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:04,829 INFO L186 Difference]: Start difference. First operand has 768 places, 448 transitions, 6267 flow. Second operand 29 states and 4634 transitions. [2022-01-19 07:16:04,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 756 places, 477 transitions, 7408 flow [2022-01-19 07:16:05,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 723 places, 477 transitions, 6805 flow, removed 22 selfloop flow, removed 33 redundant places. [2022-01-19 07:16:05,041 INFO L242 Difference]: Finished difference. Result has 730 places, 404 transitions, 4947 flow [2022-01-19 07:16:05,041 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5714, PETRI_DIFFERENCE_MINUEND_PLACES=695, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=4947, PETRI_PLACES=730, PETRI_TRANSITIONS=404} [2022-01-19 07:16:05,041 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 543 predicate places. [2022-01-19 07:16:05,041 INFO L470 AbstractCegarLoop]: Abstraction has has 730 places, 404 transitions, 4947 flow [2022-01-19 07:16:05,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:05,041 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:16:05,042 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:16:05,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable430 [2022-01-19 07:16:05,042 INFO L402 AbstractCegarLoop]: === Iteration 432 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:16:05,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:16:05,042 INFO L85 PathProgramCache]: Analyzing trace with hash 217359096, now seen corresponding path program 128 times [2022-01-19 07:16:05,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:16:05,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858634135] [2022-01-19 07:16:05,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:16:05,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:16:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:16:05,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:16:05,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:16:05,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858634135] [2022-01-19 07:16:05,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858634135] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:16:05,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:16:05,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:16:05,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498721722] [2022-01-19 07:16:05,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:16:05,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:16:05,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:16:05,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:16:05,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:16:05,145 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:16:05,146 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 730 places, 404 transitions, 4947 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:05,146 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:16:05,146 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:16:05,146 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:16:05,989 INFO L129 PetriNetUnfolder]: 372/1686 cut-off events. [2022-01-19 07:16:05,989 INFO L130 PetriNetUnfolder]: For 26063/26071 co-relation queries the response was YES. [2022-01-19 07:16:06,032 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10249 conditions, 1686 events. 372/1686 cut-off events. For 26063/26071 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 11637 event pairs, 209 based on Foata normal form. 1/1636 useless extension candidates. Maximal degree in co-relation 9937. Up to 461 conditions per place. [2022-01-19 07:16:06,037 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 192 selfloop transitions, 32 changer transitions 66/431 dead transitions. [2022-01-19 07:16:06,037 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 707 places, 431 transitions, 5918 flow [2022-01-19 07:16:06,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:16:06,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:16:06,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4786 transitions. [2022-01-19 07:16:06,040 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7596825396825397 [2022-01-19 07:16:06,040 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4786 transitions. [2022-01-19 07:16:06,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4786 transitions. [2022-01-19 07:16:06,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:16:06,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4786 transitions. [2022-01-19 07:16:06,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.53333333333333) internal successors, (4786), 30 states have internal predecessors, (4786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:06,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:06,046 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:06,046 INFO L186 Difference]: Start difference. First operand has 730 places, 404 transitions, 4947 flow. Second operand 30 states and 4786 transitions. [2022-01-19 07:16:06,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 707 places, 431 transitions, 5918 flow [2022-01-19 07:16:06,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 677 places, 431 transitions, 5533 flow, removed 26 selfloop flow, removed 30 redundant places. [2022-01-19 07:16:06,222 INFO L242 Difference]: Finished difference. Result has 684 places, 356 transitions, 3788 flow [2022-01-19 07:16:06,222 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4596, PETRI_DIFFERENCE_MINUEND_PLACES=648, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3788, PETRI_PLACES=684, PETRI_TRANSITIONS=356} [2022-01-19 07:16:06,222 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 497 predicate places. [2022-01-19 07:16:06,222 INFO L470 AbstractCegarLoop]: Abstraction has has 684 places, 356 transitions, 3788 flow [2022-01-19 07:16:06,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:06,223 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:16:06,223 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:16:06,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable431 [2022-01-19 07:16:06,223 INFO L402 AbstractCegarLoop]: === Iteration 433 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:16:06,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:16:06,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1813175114, now seen corresponding path program 129 times [2022-01-19 07:16:06,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:16:06,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489887033] [2022-01-19 07:16:06,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:16:06,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:16:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:16:06,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:16:06,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:16:06,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489887033] [2022-01-19 07:16:06,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489887033] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:16:06,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:16:06,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:16:06,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208402057] [2022-01-19 07:16:06,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:16:06,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:16:06,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:16:06,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:16:06,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:16:06,326 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:16:06,326 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 684 places, 356 transitions, 3788 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:06,326 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:16:06,326 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:16:06,326 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:16:07,080 INFO L129 PetriNetUnfolder]: 353/1618 cut-off events. [2022-01-19 07:16:07,081 INFO L130 PetriNetUnfolder]: For 23560/23568 co-relation queries the response was YES. [2022-01-19 07:16:07,119 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9611 conditions, 1618 events. 353/1618 cut-off events. For 23560/23568 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 10956 event pairs, 206 based on Foata normal form. 1/1568 useless extension candidates. Maximal degree in co-relation 9309. Up to 450 conditions per place. [2022-01-19 07:16:07,124 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 158 selfloop transitions, 41 changer transitions 62/402 dead transitions. [2022-01-19 07:16:07,124 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 651 places, 402 transitions, 5088 flow [2022-01-19 07:16:07,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 07:16:07,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 07:16:07,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4480 transitions. [2022-01-19 07:16:07,126 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2022-01-19 07:16:07,126 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4480 transitions. [2022-01-19 07:16:07,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4480 transitions. [2022-01-19 07:16:07,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:16:07,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4480 transitions. [2022-01-19 07:16:07,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.0) internal successors, (4480), 28 states have internal predecessors, (4480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:07,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:07,132 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:07,132 INFO L186 Difference]: Start difference. First operand has 684 places, 356 transitions, 3788 flow. Second operand 28 states and 4480 transitions. [2022-01-19 07:16:07,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 651 places, 402 transitions, 5088 flow [2022-01-19 07:16:07,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 624 places, 402 transitions, 4798 flow, removed 26 selfloop flow, removed 27 redundant places. [2022-01-19 07:16:07,276 INFO L242 Difference]: Finished difference. Result has 633 places, 331 transitions, 3228 flow [2022-01-19 07:16:07,276 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3582, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=3228, PETRI_PLACES=633, PETRI_TRANSITIONS=331} [2022-01-19 07:16:07,276 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 446 predicate places. [2022-01-19 07:16:07,276 INFO L470 AbstractCegarLoop]: Abstraction has has 633 places, 331 transitions, 3228 flow [2022-01-19 07:16:07,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:07,276 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:16:07,276 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:16:07,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable432 [2022-01-19 07:16:07,277 INFO L402 AbstractCegarLoop]: === Iteration 434 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:16:07,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:16:07,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1269532020, now seen corresponding path program 130 times [2022-01-19 07:16:07,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:16:07,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560452478] [2022-01-19 07:16:07,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:16:07,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:16:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:16:07,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:16:07,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:16:07,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560452478] [2022-01-19 07:16:07,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560452478] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:16:07,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:16:07,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:16:07,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735762437] [2022-01-19 07:16:07,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:16:07,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:16:07,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:16:07,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:16:07,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:16:07,378 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:16:07,379 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 331 transitions, 3228 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:07,379 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:16:07,379 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:16:07,379 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:16:08,132 INFO L129 PetriNetUnfolder]: 320/1482 cut-off events. [2022-01-19 07:16:08,132 INFO L130 PetriNetUnfolder]: For 20545/20553 co-relation queries the response was YES. [2022-01-19 07:16:08,152 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8656 conditions, 1482 events. 320/1482 cut-off events. For 20545/20553 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 9658 event pairs, 200 based on Foata normal form. 1/1434 useless extension candidates. Maximal degree in co-relation 8361. Up to 428 conditions per place. [2022-01-19 07:16:08,156 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 131 selfloop transitions, 11 changer transitions 68/351 dead transitions. [2022-01-19 07:16:08,156 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 628 places, 351 transitions, 3897 flow [2022-01-19 07:16:08,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 07:16:08,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 07:16:08,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4610 transitions. [2022-01-19 07:16:08,158 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7569786535303776 [2022-01-19 07:16:08,158 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4610 transitions. [2022-01-19 07:16:08,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4610 transitions. [2022-01-19 07:16:08,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:16:08,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4610 transitions. [2022-01-19 07:16:08,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 158.9655172413793) internal successors, (4610), 29 states have internal predecessors, (4610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:08,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:08,164 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:08,164 INFO L186 Difference]: Start difference. First operand has 633 places, 331 transitions, 3228 flow. Second operand 29 states and 4610 transitions. [2022-01-19 07:16:08,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 628 places, 351 transitions, 3897 flow [2022-01-19 07:16:08,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 351 transitions, 3705 flow, removed 20 selfloop flow, removed 29 redundant places. [2022-01-19 07:16:08,279 INFO L242 Difference]: Finished difference. Result has 604 places, 275 transitions, 2164 flow [2022-01-19 07:16:08,279 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3048, PETRI_DIFFERENCE_MINUEND_PLACES=571, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2164, PETRI_PLACES=604, PETRI_TRANSITIONS=275} [2022-01-19 07:16:08,279 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 417 predicate places. [2022-01-19 07:16:08,280 INFO L470 AbstractCegarLoop]: Abstraction has has 604 places, 275 transitions, 2164 flow [2022-01-19 07:16:08,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:08,280 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:16:08,280 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:16:08,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable433 [2022-01-19 07:16:08,280 INFO L402 AbstractCegarLoop]: === Iteration 435 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:16:08,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:16:08,280 INFO L85 PathProgramCache]: Analyzing trace with hash 354559834, now seen corresponding path program 131 times [2022-01-19 07:16:08,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:16:08,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721771917] [2022-01-19 07:16:08,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:16:08,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:16:08,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:16:08,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:16:08,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:16:08,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721771917] [2022-01-19 07:16:08,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721771917] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:16:08,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:16:08,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:16:08,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941080480] [2022-01-19 07:16:08,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:16:08,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:16:08,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:16:08,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:16:08,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:16:08,378 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:16:08,379 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 275 transitions, 2164 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:08,379 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:16:08,379 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:16:08,379 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:16:09,522 INFO L129 PetriNetUnfolder]: 369/1657 cut-off events. [2022-01-19 07:16:09,522 INFO L130 PetriNetUnfolder]: For 23599/23613 co-relation queries the response was YES. [2022-01-19 07:16:09,564 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9704 conditions, 1657 events. 369/1657 cut-off events. For 23599/23613 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11390 event pairs, 121 based on Foata normal form. 1/1617 useless extension candidates. Maximal degree in co-relation 9418. Up to 345 conditions per place. [2022-01-19 07:16:09,568 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 168 selfloop transitions, 65 changer transitions 89/463 dead transitions. [2022-01-19 07:16:09,569 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 463 transitions, 6016 flow [2022-01-19 07:16:09,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-19 07:16:09,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-01-19 07:16:09,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 8590 transitions. [2022-01-19 07:16:09,572 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7574955908289241 [2022-01-19 07:16:09,572 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 8590 transitions. [2022-01-19 07:16:09,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 8590 transitions. [2022-01-19 07:16:09,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:16:09,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 8590 transitions. [2022-01-19 07:16:09,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 159.07407407407408) internal successors, (8590), 54 states have internal predecessors, (8590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:09,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 210.0) internal successors, (11550), 55 states have internal predecessors, (11550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:09,584 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 210.0) internal successors, (11550), 55 states have internal predecessors, (11550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:09,584 INFO L186 Difference]: Start difference. First operand has 604 places, 275 transitions, 2164 flow. Second operand 54 states and 8590 transitions. [2022-01-19 07:16:09,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 463 transitions, 6016 flow [2022-01-19 07:16:09,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 463 transitions, 5683 flow, removed 56 selfloop flow, removed 34 redundant places. [2022-01-19 07:16:09,689 INFO L242 Difference]: Finished difference. Result has 588 places, 301 transitions, 2656 flow [2022-01-19 07:16:09,689 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2019, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=2656, PETRI_PLACES=588, PETRI_TRANSITIONS=301} [2022-01-19 07:16:09,690 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 401 predicate places. [2022-01-19 07:16:09,690 INFO L470 AbstractCegarLoop]: Abstraction has has 588 places, 301 transitions, 2656 flow [2022-01-19 07:16:09,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:09,690 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:16:09,690 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:16:09,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable434 [2022-01-19 07:16:09,690 INFO L402 AbstractCegarLoop]: === Iteration 436 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:16:09,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:16:09,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1254471540, now seen corresponding path program 132 times [2022-01-19 07:16:09,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:16:09,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776052791] [2022-01-19 07:16:09,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:16:09,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:16:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:16:09,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:16:09,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:16:09,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776052791] [2022-01-19 07:16:09,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776052791] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:16:09,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:16:09,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:16:09,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124454774] [2022-01-19 07:16:09,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:16:09,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:16:09,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:16:09,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:16:09,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:16:09,787 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:16:09,788 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 301 transitions, 2656 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:09,788 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:16:09,788 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:16:09,788 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:16:10,555 INFO L129 PetriNetUnfolder]: 368/1612 cut-off events. [2022-01-19 07:16:10,555 INFO L130 PetriNetUnfolder]: For 26694/26706 co-relation queries the response was YES. [2022-01-19 07:16:10,595 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10154 conditions, 1612 events. 368/1612 cut-off events. For 26694/26706 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 10888 event pairs, 133 based on Foata normal form. 5/1567 useless extension candidates. Maximal degree in co-relation 9855. Up to 359 conditions per place. [2022-01-19 07:16:10,599 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 171 selfloop transitions, 69 changer transitions 50/431 dead transitions. [2022-01-19 07:16:10,600 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 572 places, 431 transitions, 5906 flow [2022-01-19 07:16:10,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 07:16:10,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 07:16:10,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4338 transitions. [2022-01-19 07:16:10,602 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.765079365079365 [2022-01-19 07:16:10,602 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4338 transitions. [2022-01-19 07:16:10,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4338 transitions. [2022-01-19 07:16:10,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:16:10,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4338 transitions. [2022-01-19 07:16:10,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 160.66666666666666) internal successors, (4338), 27 states have internal predecessors, (4338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:10,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:10,607 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:10,607 INFO L186 Difference]: Start difference. First operand has 588 places, 301 transitions, 2656 flow. Second operand 27 states and 4338 transitions. [2022-01-19 07:16:10,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 572 places, 431 transitions, 5906 flow [2022-01-19 07:16:10,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 431 transitions, 5661 flow, removed 113 selfloop flow, removed 37 redundant places. [2022-01-19 07:16:10,720 INFO L242 Difference]: Finished difference. Result has 551 places, 317 transitions, 3129 flow [2022-01-19 07:16:10,720 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2540, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=3129, PETRI_PLACES=551, PETRI_TRANSITIONS=317} [2022-01-19 07:16:10,720 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 364 predicate places. [2022-01-19 07:16:10,720 INFO L470 AbstractCegarLoop]: Abstraction has has 551 places, 317 transitions, 3129 flow [2022-01-19 07:16:10,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:10,721 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:16:10,721 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:16:10,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable435 [2022-01-19 07:16:10,721 INFO L402 AbstractCegarLoop]: === Iteration 437 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:16:10,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:16:10,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1993306704, now seen corresponding path program 133 times [2022-01-19 07:16:10,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:16:10,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768601362] [2022-01-19 07:16:10,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:16:10,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:16:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:16:10,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:16:10,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:16:10,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768601362] [2022-01-19 07:16:10,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768601362] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:16:10,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:16:10,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:16:10,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061506273] [2022-01-19 07:16:10,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:16:10,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:16:10,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:16:10,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:16:10,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:16:10,817 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:16:10,818 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 317 transitions, 3129 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:10,818 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:16:10,818 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:16:10,818 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:16:11,792 INFO L129 PetriNetUnfolder]: 378/1724 cut-off events. [2022-01-19 07:16:11,792 INFO L130 PetriNetUnfolder]: For 28851/28863 co-relation queries the response was YES. [2022-01-19 07:16:11,824 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10736 conditions, 1724 events. 378/1724 cut-off events. For 28851/28863 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 12129 event pairs, 147 based on Foata normal form. 1/1680 useless extension candidates. Maximal degree in co-relation 10457. Up to 360 conditions per place. [2022-01-19 07:16:11,829 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 191 selfloop transitions, 75 changer transitions 81/488 dead transitions. [2022-01-19 07:16:11,829 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 488 transitions, 7346 flow [2022-01-19 07:16:11,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-19 07:16:11,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-01-19 07:16:11,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 6709 transitions. [2022-01-19 07:16:11,832 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7606575963718821 [2022-01-19 07:16:11,832 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 6709 transitions. [2022-01-19 07:16:11,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 6709 transitions. [2022-01-19 07:16:11,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:16:11,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 6709 transitions. [2022-01-19 07:16:11,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 159.73809523809524) internal successors, (6709), 42 states have internal predecessors, (6709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:11,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 210.0) internal successors, (9030), 43 states have internal predecessors, (9030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:11,840 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 210.0) internal successors, (9030), 43 states have internal predecessors, (9030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:11,840 INFO L186 Difference]: Start difference. First operand has 551 places, 317 transitions, 3129 flow. Second operand 42 states and 6709 transitions. [2022-01-19 07:16:11,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 488 transitions, 7346 flow [2022-01-19 07:16:11,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 488 transitions, 6922 flow, removed 123 selfloop flow, removed 13 redundant places. [2022-01-19 07:16:11,952 INFO L242 Difference]: Finished difference. Result has 602 places, 339 transitions, 3618 flow [2022-01-19 07:16:11,952 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2798, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=3618, PETRI_PLACES=602, PETRI_TRANSITIONS=339} [2022-01-19 07:16:11,952 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 415 predicate places. [2022-01-19 07:16:11,952 INFO L470 AbstractCegarLoop]: Abstraction has has 602 places, 339 transitions, 3618 flow [2022-01-19 07:16:11,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:11,953 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:16:11,953 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:16:11,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable436 [2022-01-19 07:16:11,953 INFO L402 AbstractCegarLoop]: === Iteration 438 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:16:11,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:16:11,953 INFO L85 PathProgramCache]: Analyzing trace with hash 500872052, now seen corresponding path program 134 times [2022-01-19 07:16:11,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:16:11,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221461496] [2022-01-19 07:16:11,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:16:11,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:16:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:16:12,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:16:12,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:16:12,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221461496] [2022-01-19 07:16:12,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221461496] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:16:12,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:16:12,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 07:16:12,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885768463] [2022-01-19 07:16:12,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:16:12,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 07:16:12,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:16:12,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 07:16:12,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 07:16:12,060 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 07:16:12,061 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 602 places, 339 transitions, 3618 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:16:12,061 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:16:12,061 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 07:16:12,061 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-01-19 07:16:12,641 WARN L244 SmtUtils]: Removed 7 from assertion stack [2022-01-19 07:16:12,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-19 07:16:12,642 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-19 07:16:12,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable437 [2022-01-19 07:16:12,643 WARN L594 AbstractCegarLoop]: Verification canceled: while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 27 for 5ms.. [2022-01-19 07:16:12,644 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-19 07:16:12,644 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-19 07:16:12,647 INFO L732 BasicCegarLoop]: Path program histogram: [252, 134, 20, 20, 2, 2, 2, 2, 2, 1, 1] [2022-01-19 07:16:12,648 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 07:16:12,648 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 07:16:12,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 07:16:12 BasicIcfg [2022-01-19 07:16:12,650 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 07:16:12,650 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 07:16:12,650 INFO L158 Benchmark]: Toolchain (without parser) took 797558.78ms. Allocated memory was 415.2MB in the beginning and 3.4GB in the end (delta: 3.0GB). Free memory was 357.5MB in the beginning and 1.3GB in the end (delta: -990.3MB). Peak memory consumption was 2.0GB. Max. memory is 16.0GB. [2022-01-19 07:16:12,650 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 415.2MB. Free memory is still 373.8MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 07:16:12,651 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.61ms. Allocated memory was 415.2MB in the beginning and 534.8MB in the end (delta: 119.5MB). Free memory was 357.2MB in the beginning and 504.1MB in the end (delta: -146.9MB). Peak memory consumption was 7.2MB. Max. memory is 16.0GB. [2022-01-19 07:16:12,651 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.91ms. Allocated memory is still 534.8MB. Free memory was 504.1MB in the beginning and 502.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 07:16:12,651 INFO L158 Benchmark]: Boogie Preprocessor took 26.89ms. Allocated memory is still 534.8MB. Free memory was 502.0MB in the beginning and 500.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 07:16:12,651 INFO L158 Benchmark]: RCFGBuilder took 381.12ms. Allocated memory is still 534.8MB. Free memory was 500.8MB in the beginning and 485.3MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2022-01-19 07:16:12,651 INFO L158 Benchmark]: TraceAbstraction took 796919.66ms. Allocated memory was 534.8MB in the beginning and 3.4GB in the end (delta: 2.8GB). Free memory was 484.7MB in the beginning and 1.3GB in the end (delta: -863.1MB). Peak memory consumption was 2.0GB. Max. memory is 16.0GB. [2022-01-19 07:16:12,652 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 415.2MB. Free memory is still 373.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 197.61ms. Allocated memory was 415.2MB in the beginning and 534.8MB in the end (delta: 119.5MB). Free memory was 357.2MB in the beginning and 504.1MB in the end (delta: -146.9MB). Peak memory consumption was 7.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 26.91ms. Allocated memory is still 534.8MB. Free memory was 504.1MB in the beginning and 502.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 26.89ms. Allocated memory is still 534.8MB. Free memory was 502.0MB in the beginning and 500.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 381.12ms. Allocated memory is still 534.8MB. Free memory was 500.8MB in the beginning and 485.3MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 796919.66ms. Allocated memory was 534.8MB in the beginning and 3.4GB in the end (delta: 2.8GB). Free memory was 484.7MB in the beginning and 1.3GB in the end (delta: -863.1MB). Peak memory consumption was 2.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 27 for 5ms.. - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 27 for 5ms.. - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 27 for 5ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 300 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 796.7s, OverallIterations: 438, TraceHistogramMax: 1, PathProgramHistogramMax: 252, EmptinessCheckTime: 0.0s, AutomataDifference: 751.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52553 SdHoareTripleChecker+Valid, 58.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 52553 mSDsluCounter, 281891 SdHoareTripleChecker+Invalid, 48.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 274044 mSDsCounter, 74 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 163181 IncrementalHoareTripleChecker+Invalid, 163255 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 74 mSolverCounterUnsat, 34092 mSDtfsCounter, 163181 mSolverCounterSat, 0.9s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18236 GetRequests, 1407 SyntacticMatches, 0 SemanticMatches, 16828 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160164 ImplicationChecksByTransitivity, 148.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23198occurred in iteration=259, InterpolantAutomatonStates: 14185, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 41.0s InterpolantComputationTime, 47374 NumberOfCodeBlocks, 47374 NumberOfCodeBlocksAsserted, 438 NumberOfCheckSat, 46936 ConstructedInterpolants, 0 QuantifiedInterpolants, 211153 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 438 InterpolantComputations, 438 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown