/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-After.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/security.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 15:07:40,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 15:07:40,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 15:07:40,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 15:07:40,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 15:07:40,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 15:07:40,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 15:07:40,311 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 15:07:40,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 15:07:40,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 15:07:40,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 15:07:40,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 15:07:40,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 15:07:40,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 15:07:40,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 15:07:40,324 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 15:07:40,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 15:07:40,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 15:07:40,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 15:07:40,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 15:07:40,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 15:07:40,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 15:07:40,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 15:07:40,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 15:07:40,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-19 15:07:40,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 15:07:40,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 15:07:40,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 15:07:40,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 15:07:40,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 15:07:40,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 15:07:40,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 15:07:40,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 15:07:40,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 15:07:40,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 15:07:40,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 15:07:40,350 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-After.epf [2022-01-19 15:07:40,386 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 15:07:40,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 15:07:40,387 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 15:07:40,387 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 15:07:40,388 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 15:07:40,388 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 15:07:40,388 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 15:07:40,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 15:07:40,388 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 15:07:40,388 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 15:07:40,389 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 15:07:40,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 15:07:40,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 15:07:40,389 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 15:07:40,389 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 15:07:40,389 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 15:07:40,390 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 15:07:40,390 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 15:07:40,390 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 15:07:40,390 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 15:07:40,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 15:07:40,390 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 15:07:40,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 15:07:40,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 15:07:40,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 15:07:40,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 15:07:40,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 15:07:40,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 15:07:40,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 15:07:40,391 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 15:07:40,391 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 15:07:40,391 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=AFTER [2022-01-19 15:07:40,391 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 15:07:40,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 15:07:40,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 15:07:40,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 15:07:40,645 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 15:07:40,646 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 15:07:40,647 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/security.wvr.c [2022-01-19 15:07:40,702 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d779f9e1/b2a15d7b5f05400fadcb42b2ed88cebf/FLAGe5e438e66 [2022-01-19 15:07:41,125 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 15:07:41,125 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/security.wvr.c [2022-01-19 15:07:41,135 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d779f9e1/b2a15d7b5f05400fadcb42b2ed88cebf/FLAGe5e438e66 [2022-01-19 15:07:41,152 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d779f9e1/b2a15d7b5f05400fadcb42b2ed88cebf [2022-01-19 15:07:41,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 15:07:41,157 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 15:07:41,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 15:07:41,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 15:07:41,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 15:07:41,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 03:07:41" (1/1) ... [2022-01-19 15:07:41,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79c17127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:07:41, skipping insertion in model container [2022-01-19 15:07:41,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 03:07:41" (1/1) ... [2022-01-19 15:07:41,169 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 15:07:41,182 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 15:07:41,378 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/security.wvr.c[1931,1944] [2022-01-19 15:07:41,381 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 15:07:41,389 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 15:07:41,417 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/security.wvr.c[1931,1944] [2022-01-19 15:07:41,423 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 15:07:41,434 INFO L208 MainTranslator]: Completed translation [2022-01-19 15:07:41,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:07:41 WrapperNode [2022-01-19 15:07:41,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 15:07:41,438 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 15:07:41,438 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 15:07:41,438 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 15:07:41,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:07:41" (1/1) ... [2022-01-19 15:07:41,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:07:41" (1/1) ... [2022-01-19 15:07:41,468 INFO L137 Inliner]: procedures = 21, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2022-01-19 15:07:41,469 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 15:07:41,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 15:07:41,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 15:07:41,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 15:07:41,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:07:41" (1/1) ... [2022-01-19 15:07:41,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:07:41" (1/1) ... [2022-01-19 15:07:41,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:07:41" (1/1) ... [2022-01-19 15:07:41,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:07:41" (1/1) ... [2022-01-19 15:07:41,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:07:41" (1/1) ... [2022-01-19 15:07:41,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:07:41" (1/1) ... [2022-01-19 15:07:41,499 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:07:41" (1/1) ... [2022-01-19 15:07:41,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 15:07:41,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 15:07:41,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 15:07:41,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 15:07:41,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:07:41" (1/1) ... [2022-01-19 15:07:41,512 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 15:07:41,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 15:07:41,536 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 15:07:41,562 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 15:07:41,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 15:07:41,582 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 15:07:41,582 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 15:07:41,582 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 15:07:41,582 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 15:07:41,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 15:07:41,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 15:07:41,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 15:07:41,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 15:07:41,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 15:07:41,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 15:07:41,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 15:07:41,585 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 15:07:41,667 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 15:07:41,668 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 15:07:41,842 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 15:07:41,851 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 15:07:41,851 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 15:07:41,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 03:07:41 BoogieIcfgContainer [2022-01-19 15:07:41,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 15:07:41,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 15:07:41,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 15:07:41,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 15:07:41,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 03:07:41" (1/3) ... [2022-01-19 15:07:41,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656a0267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 03:07:41, skipping insertion in model container [2022-01-19 15:07:41,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:07:41" (2/3) ... [2022-01-19 15:07:41,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656a0267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 03:07:41, skipping insertion in model container [2022-01-19 15:07:41,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 03:07:41" (3/3) ... [2022-01-19 15:07:41,876 INFO L111 eAbstractionObserver]: Analyzing ICFG security.wvr.c [2022-01-19 15:07:41,880 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 15:07:41,880 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 15:07:41,880 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 15:07:41,920 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:07:41,921 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:07:41,921 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:07:41,922 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:07:41,922 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:07:41,923 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:07:41,923 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:07:41,923 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:07:41,925 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:07:41,926 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:07:41,926 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:07:41,926 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:07:41,928 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:07:41,930 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:07:41,931 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:07:41,932 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:07:41,933 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:07:41,935 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:07:41,938 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:07:41,939 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:07:41,940 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:07:41,940 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:07:41,941 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:07:41,941 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:07:41,953 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:07:41,953 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:07:41,953 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:07:41,955 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:07:41,955 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:07:41,956 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:07:41,959 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-19 15:07:42,017 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 15:07:42,032 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 15:07:42,033 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-19 15:07:42,047 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 81 transitions, 178 flow [2022-01-19 15:07:42,103 INFO L129 PetriNetUnfolder]: 3/79 cut-off events. [2022-01-19 15:07:42,104 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 15:07:42,106 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 79 events. 3/79 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2022-01-19 15:07:42,106 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 81 transitions, 178 flow [2022-01-19 15:07:42,109 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 70 transitions, 152 flow [2022-01-19 15:07:42,137 INFO L129 PetriNetUnfolder]: 3/69 cut-off events. [2022-01-19 15:07:42,137 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 15:07:42,137 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:42,139 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] [2022-01-19 15:07:42,140 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:42,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:42,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1803071327, now seen corresponding path program 1 times [2022-01-19 15:07:42,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:42,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774154448] [2022-01-19 15:07:42,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:42,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:42,730 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 15:07:42,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:42,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774154448] [2022-01-19 15:07:42,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774154448] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:42,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:42,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 15:07:42,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235872454] [2022-01-19 15:07:42,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:42,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 15:07:42,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:42,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 15:07:42,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-01-19 15:07:42,782 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-01-19 15:07:42,787 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 152 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:42,787 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:42,787 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-01-19 15:07:42,788 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:43,243 INFO L129 PetriNetUnfolder]: 32/219 cut-off events. [2022-01-19 15:07:43,244 INFO L130 PetriNetUnfolder]: For 57/60 co-relation queries the response was YES. [2022-01-19 15:07:43,245 INFO L84 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 219 events. 32/219 cut-off events. For 57/60 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 894 event pairs, 11 based on Foata normal form. 5/212 useless extension candidates. Maximal degree in co-relation 170. Up to 47 conditions per place. [2022-01-19 15:07:43,246 INFO L132 encePairwiseOnDemand]: 70/81 looper letters, 34 selfloop transitions, 2 changer transitions 24/106 dead transitions. [2022-01-19 15:07:43,247 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 106 transitions, 377 flow [2022-01-19 15:07:43,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-19 15:07:43,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-01-19 15:07:43,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 906 transitions. [2022-01-19 15:07:43,263 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.745679012345679 [2022-01-19 15:07:43,263 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 906 transitions. [2022-01-19 15:07:43,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 906 transitions. [2022-01-19 15:07:43,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:43,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 906 transitions. [2022-01-19 15:07:43,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 60.4) internal successors, (906), 15 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:43,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 81.0) internal successors, (1296), 16 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:43,302 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 81.0) internal successors, (1296), 16 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:43,304 INFO L186 Difference]: Start difference. First operand has 74 places, 70 transitions, 152 flow. Second operand 15 states and 906 transitions. [2022-01-19 15:07:43,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 106 transitions, 377 flow [2022-01-19 15:07:43,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 106 transitions, 347 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 15:07:43,310 INFO L242 Difference]: Finished difference. Result has 95 places, 69 transitions, 175 flow [2022-01-19 15:07:43,312 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=175, PETRI_PLACES=95, PETRI_TRANSITIONS=69} [2022-01-19 15:07:43,315 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 21 predicate places. [2022-01-19 15:07:43,315 INFO L470 AbstractCegarLoop]: Abstraction has has 95 places, 69 transitions, 175 flow [2022-01-19 15:07:43,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:43,316 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:43,316 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:07:43,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 15:07:43,316 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:43,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:43,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1262948190, now seen corresponding path program 1 times [2022-01-19 15:07:43,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:43,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803170360] [2022-01-19 15:07:43,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:43,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:43,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:07:43,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:43,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803170360] [2022-01-19 15:07:43,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803170360] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:43,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:43,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 15:07:43,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802754916] [2022-01-19 15:07:43,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:43,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 15:07:43,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:43,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 15:07:43,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 15:07:43,491 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 81 [2022-01-19 15:07:43,491 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 69 transitions, 175 flow. Second operand has 8 states, 8 states have (on average 60.25) internal successors, (482), 8 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:43,492 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:43,492 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 81 [2022-01-19 15:07:43,492 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:43,694 INFO L129 PetriNetUnfolder]: 21/184 cut-off events. [2022-01-19 15:07:43,695 INFO L130 PetriNetUnfolder]: For 99/103 co-relation queries the response was YES. [2022-01-19 15:07:43,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 184 events. 21/184 cut-off events. For 99/103 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 647 event pairs, 8 based on Foata normal form. 1/178 useless extension candidates. Maximal degree in co-relation 336. Up to 39 conditions per place. [2022-01-19 15:07:43,699 INFO L132 encePairwiseOnDemand]: 74/81 looper letters, 37 selfloop transitions, 3 changer transitions 6/94 dead transitions. [2022-01-19 15:07:43,699 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 94 transitions, 379 flow [2022-01-19 15:07:43,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 15:07:43,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 15:07:43,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 511 transitions. [2022-01-19 15:07:43,705 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7885802469135802 [2022-01-19 15:07:43,705 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 511 transitions. [2022-01-19 15:07:43,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 511 transitions. [2022-01-19 15:07:43,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:43,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 511 transitions. [2022-01-19 15:07:43,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 63.875) internal successors, (511), 8 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:43,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 81.0) internal successors, (729), 9 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:43,712 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 81.0) internal successors, (729), 9 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:43,712 INFO L186 Difference]: Start difference. First operand has 95 places, 69 transitions, 175 flow. Second operand 8 states and 511 transitions. [2022-01-19 15:07:43,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 94 transitions, 379 flow [2022-01-19 15:07:43,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 94 transitions, 314 flow, removed 32 selfloop flow, removed 10 redundant places. [2022-01-19 15:07:43,717 INFO L242 Difference]: Finished difference. Result has 86 places, 71 transitions, 183 flow [2022-01-19 15:07:43,717 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=183, PETRI_PLACES=86, PETRI_TRANSITIONS=71} [2022-01-19 15:07:43,718 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 12 predicate places. [2022-01-19 15:07:43,718 INFO L470 AbstractCegarLoop]: Abstraction has has 86 places, 71 transitions, 183 flow [2022-01-19 15:07:43,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 60.25) internal successors, (482), 8 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:43,719 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:43,719 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:07:43,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 15:07:43,719 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:43,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:43,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1033469356, now seen corresponding path program 2 times [2022-01-19 15:07:43,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:43,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279118555] [2022-01-19 15:07:43,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:43,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:43,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:07:43,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:43,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279118555] [2022-01-19 15:07:43,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279118555] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:43,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:43,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 15:07:43,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780907762] [2022-01-19 15:07:43,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:43,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 15:07:43,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:43,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 15:07:43,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-19 15:07:43,909 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 81 [2022-01-19 15:07:43,910 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 71 transitions, 183 flow. Second operand has 8 states, 8 states have (on average 60.25) internal successors, (482), 8 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:43,910 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:43,910 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 81 [2022-01-19 15:07:43,911 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:44,060 INFO L129 PetriNetUnfolder]: 25/241 cut-off events. [2022-01-19 15:07:44,061 INFO L130 PetriNetUnfolder]: For 111/115 co-relation queries the response was YES. [2022-01-19 15:07:44,061 INFO L84 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 241 events. 25/241 cut-off events. For 111/115 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1129 event pairs, 16 based on Foata normal form. 1/233 useless extension candidates. Maximal degree in co-relation 427. Up to 61 conditions per place. [2022-01-19 15:07:44,062 INFO L132 encePairwiseOnDemand]: 74/81 looper letters, 34 selfloop transitions, 4 changer transitions 7/93 dead transitions. [2022-01-19 15:07:44,063 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 93 transitions, 366 flow [2022-01-19 15:07:44,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 15:07:44,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 15:07:44,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 505 transitions. [2022-01-19 15:07:44,065 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.779320987654321 [2022-01-19 15:07:44,065 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 505 transitions. [2022-01-19 15:07:44,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 505 transitions. [2022-01-19 15:07:44,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:44,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 505 transitions. [2022-01-19 15:07:44,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 63.125) internal successors, (505), 8 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:44,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 81.0) internal successors, (729), 9 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:44,069 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 81.0) internal successors, (729), 9 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:44,069 INFO L186 Difference]: Start difference. First operand has 86 places, 71 transitions, 183 flow. Second operand 8 states and 505 transitions. [2022-01-19 15:07:44,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 93 transitions, 366 flow [2022-01-19 15:07:44,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 93 transitions, 347 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-01-19 15:07:44,073 INFO L242 Difference]: Finished difference. Result has 92 places, 72 transitions, 206 flow [2022-01-19 15:07:44,073 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=206, PETRI_PLACES=92, PETRI_TRANSITIONS=72} [2022-01-19 15:07:44,074 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 18 predicate places. [2022-01-19 15:07:44,074 INFO L470 AbstractCegarLoop]: Abstraction has has 92 places, 72 transitions, 206 flow [2022-01-19 15:07:44,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 60.25) internal successors, (482), 8 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:44,074 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:44,075 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:07:44,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 15:07:44,075 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:44,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:44,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1244957747, now seen corresponding path program 2 times [2022-01-19 15:07:44,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:44,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224081138] [2022-01-19 15:07:44,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:44,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:44,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:07:44,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:44,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224081138] [2022-01-19 15:07:44,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224081138] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:44,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:44,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 15:07:44,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177699757] [2022-01-19 15:07:44,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:44,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 15:07:44,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:44,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 15:07:44,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-01-19 15:07:44,297 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-01-19 15:07:44,298 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 72 transitions, 206 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:44,300 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:44,304 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-01-19 15:07:44,304 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:44,530 INFO L129 PetriNetUnfolder]: 28/290 cut-off events. [2022-01-19 15:07:44,530 INFO L130 PetriNetUnfolder]: For 250/251 co-relation queries the response was YES. [2022-01-19 15:07:44,532 INFO L84 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 290 events. 28/290 cut-off events. For 250/251 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1530 event pairs, 5 based on Foata normal form. 2/280 useless extension candidates. Maximal degree in co-relation 563. Up to 65 conditions per place. [2022-01-19 15:07:44,534 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 38 selfloop transitions, 6 changer transitions 8/98 dead transitions. [2022-01-19 15:07:44,534 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 98 transitions, 438 flow [2022-01-19 15:07:44,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 15:07:44,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 15:07:44,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 549 transitions. [2022-01-19 15:07:44,536 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7530864197530864 [2022-01-19 15:07:44,536 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 549 transitions. [2022-01-19 15:07:44,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 549 transitions. [2022-01-19 15:07:44,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:44,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 549 transitions. [2022-01-19 15:07:44,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 61.0) internal successors, (549), 9 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:44,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:44,540 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:44,540 INFO L186 Difference]: Start difference. First operand has 92 places, 72 transitions, 206 flow. Second operand 9 states and 549 transitions. [2022-01-19 15:07:44,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 98 transitions, 438 flow [2022-01-19 15:07:44,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 98 transitions, 406 flow, removed 15 selfloop flow, removed 5 redundant places. [2022-01-19 15:07:44,547 INFO L242 Difference]: Finished difference. Result has 97 places, 74 transitions, 243 flow [2022-01-19 15:07:44,548 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=243, PETRI_PLACES=97, PETRI_TRANSITIONS=74} [2022-01-19 15:07:44,549 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 23 predicate places. [2022-01-19 15:07:44,549 INFO L470 AbstractCegarLoop]: Abstraction has has 97 places, 74 transitions, 243 flow [2022-01-19 15:07:44,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:44,549 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:44,550 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:07:44,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 15:07:44,550 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:44,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:44,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1661894565, now seen corresponding path program 3 times [2022-01-19 15:07:44,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:44,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907491394] [2022-01-19 15:07:44,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:44,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:44,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:44,712 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 15:07:44,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:44,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907491394] [2022-01-19 15:07:44,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907491394] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:44,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:44,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 15:07:44,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983176409] [2022-01-19 15:07:44,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:44,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 15:07:44,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:44,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 15:07:44,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-19 15:07:44,715 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-01-19 15:07:44,715 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 74 transitions, 243 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:44,715 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:44,715 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-01-19 15:07:44,716 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:44,929 INFO L129 PetriNetUnfolder]: 30/343 cut-off events. [2022-01-19 15:07:44,929 INFO L130 PetriNetUnfolder]: For 415/416 co-relation queries the response was YES. [2022-01-19 15:07:44,930 INFO L84 FinitePrefix]: Finished finitePrefix Result has 760 conditions, 343 events. 30/343 cut-off events. For 415/416 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2027 event pairs, 23 based on Foata normal form. 2/332 useless extension candidates. Maximal degree in co-relation 704. Up to 62 conditions per place. [2022-01-19 15:07:44,931 INFO L132 encePairwiseOnDemand]: 73/81 looper letters, 47 selfloop transitions, 4 changer transitions 9/106 dead transitions. [2022-01-19 15:07:44,931 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 106 transitions, 523 flow [2022-01-19 15:07:44,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 15:07:44,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 15:07:44,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 558 transitions. [2022-01-19 15:07:44,934 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7654320987654321 [2022-01-19 15:07:44,935 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 558 transitions. [2022-01-19 15:07:44,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 558 transitions. [2022-01-19 15:07:44,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:44,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 558 transitions. [2022-01-19 15:07:44,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 62.0) internal successors, (558), 9 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:44,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:44,939 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:44,939 INFO L186 Difference]: Start difference. First operand has 97 places, 74 transitions, 243 flow. Second operand 9 states and 558 transitions. [2022-01-19 15:07:44,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 106 transitions, 523 flow [2022-01-19 15:07:44,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 106 transitions, 488 flow, removed 12 selfloop flow, removed 5 redundant places. [2022-01-19 15:07:44,944 INFO L242 Difference]: Finished difference. Result has 104 places, 76 transitions, 272 flow [2022-01-19 15:07:44,944 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=272, PETRI_PLACES=104, PETRI_TRANSITIONS=76} [2022-01-19 15:07:44,947 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 30 predicate places. [2022-01-19 15:07:44,947 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 76 transitions, 272 flow [2022-01-19 15:07:44,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:44,949 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:44,949 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] [2022-01-19 15:07:44,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 15:07:44,949 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:44,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:44,950 INFO L85 PathProgramCache]: Analyzing trace with hash 407443089, now seen corresponding path program 4 times [2022-01-19 15:07:44,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:44,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113445434] [2022-01-19 15:07:44,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:44,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:45,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:07:45,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:45,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113445434] [2022-01-19 15:07:45,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113445434] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:45,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:45,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 15:07:45,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838046161] [2022-01-19 15:07:45,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:45,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 15:07:45,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:45,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 15:07:45,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-19 15:07:45,121 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-01-19 15:07:45,123 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 76 transitions, 272 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:45,123 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:45,123 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-01-19 15:07:45,123 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:45,298 INFO L129 PetriNetUnfolder]: 27/352 cut-off events. [2022-01-19 15:07:45,299 INFO L130 PetriNetUnfolder]: For 511/513 co-relation queries the response was YES. [2022-01-19 15:07:45,300 INFO L84 FinitePrefix]: Finished finitePrefix Result has 814 conditions, 352 events. 27/352 cut-off events. For 511/513 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2126 event pairs, 7 based on Foata normal form. 2/343 useless extension candidates. Maximal degree in co-relation 754. Up to 73 conditions per place. [2022-01-19 15:07:45,301 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 51 selfloop transitions, 6 changer transitions 10/113 dead transitions. [2022-01-19 15:07:45,301 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 113 transitions, 600 flow [2022-01-19 15:07:45,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 15:07:45,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 15:07:45,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 561 transitions. [2022-01-19 15:07:45,303 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7695473251028807 [2022-01-19 15:07:45,303 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 561 transitions. [2022-01-19 15:07:45,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 561 transitions. [2022-01-19 15:07:45,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:45,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 561 transitions. [2022-01-19 15:07:45,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 62.333333333333336) internal successors, (561), 9 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:45,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:45,307 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:45,307 INFO L186 Difference]: Start difference. First operand has 104 places, 76 transitions, 272 flow. Second operand 9 states and 561 transitions. [2022-01-19 15:07:45,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 113 transitions, 600 flow [2022-01-19 15:07:45,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 113 transitions, 559 flow, removed 19 selfloop flow, removed 5 redundant places. [2022-01-19 15:07:45,314 INFO L242 Difference]: Finished difference. Result has 110 places, 79 transitions, 330 flow [2022-01-19 15:07:45,316 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=330, PETRI_PLACES=110, PETRI_TRANSITIONS=79} [2022-01-19 15:07:45,319 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 36 predicate places. [2022-01-19 15:07:45,319 INFO L470 AbstractCegarLoop]: Abstraction has has 110 places, 79 transitions, 330 flow [2022-01-19 15:07:45,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:45,319 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:45,319 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:07:45,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 15:07:45,320 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:45,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:45,322 INFO L85 PathProgramCache]: Analyzing trace with hash 741952778, now seen corresponding path program 3 times [2022-01-19 15:07:45,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:45,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987380310] [2022-01-19 15:07:45,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:45,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:45,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:45,462 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 15:07:45,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:45,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987380310] [2022-01-19 15:07:45,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987380310] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:45,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:45,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 15:07:45,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180651960] [2022-01-19 15:07:45,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:45,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 15:07:45,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:45,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 15:07:45,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-19 15:07:45,469 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 81 [2022-01-19 15:07:45,469 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 79 transitions, 330 flow. Second operand has 8 states, 8 states have (on average 60.25) internal successors, (482), 8 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:45,469 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:45,470 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 81 [2022-01-19 15:07:45,470 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:45,608 INFO L129 PetriNetUnfolder]: 22/306 cut-off events. [2022-01-19 15:07:45,608 INFO L130 PetriNetUnfolder]: For 582/589 co-relation queries the response was YES. [2022-01-19 15:07:45,609 INFO L84 FinitePrefix]: Finished finitePrefix Result has 733 conditions, 306 events. 22/306 cut-off events. For 582/589 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1676 event pairs, 19 based on Foata normal form. 1/298 useless extension candidates. Maximal degree in co-relation 675. Up to 70 conditions per place. [2022-01-19 15:07:45,610 INFO L132 encePairwiseOnDemand]: 74/81 looper letters, 35 selfloop transitions, 3 changer transitions 10/97 dead transitions. [2022-01-19 15:07:45,610 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 97 transitions, 518 flow [2022-01-19 15:07:45,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 15:07:45,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 15:07:45,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 505 transitions. [2022-01-19 15:07:45,612 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.779320987654321 [2022-01-19 15:07:45,612 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 505 transitions. [2022-01-19 15:07:45,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 505 transitions. [2022-01-19 15:07:45,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:45,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 505 transitions. [2022-01-19 15:07:45,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 63.125) internal successors, (505), 8 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:45,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 81.0) internal successors, (729), 9 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:45,615 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 81.0) internal successors, (729), 9 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:45,615 INFO L186 Difference]: Start difference. First operand has 110 places, 79 transitions, 330 flow. Second operand 8 states and 505 transitions. [2022-01-19 15:07:45,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 97 transitions, 518 flow [2022-01-19 15:07:45,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 97 transitions, 488 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-01-19 15:07:45,620 INFO L242 Difference]: Finished difference. Result has 114 places, 77 transitions, 302 flow [2022-01-19 15:07:45,620 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=302, PETRI_PLACES=114, PETRI_TRANSITIONS=77} [2022-01-19 15:07:45,621 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 40 predicate places. [2022-01-19 15:07:45,621 INFO L470 AbstractCegarLoop]: Abstraction has has 114 places, 77 transitions, 302 flow [2022-01-19 15:07:45,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 60.25) internal successors, (482), 8 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:45,621 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:45,621 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:07:45,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 15:07:45,622 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:45,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:45,622 INFO L85 PathProgramCache]: Analyzing trace with hash -848346999, now seen corresponding path program 5 times [2022-01-19 15:07:45,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:45,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174263658] [2022-01-19 15:07:45,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:45,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:45,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:07:45,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:45,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174263658] [2022-01-19 15:07:45,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174263658] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:45,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:45,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 15:07:45,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040525904] [2022-01-19 15:07:45,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:45,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 15:07:45,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:45,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 15:07:45,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-01-19 15:07:45,739 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-01-19 15:07:45,740 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 77 transitions, 302 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:45,740 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:45,740 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-01-19 15:07:45,740 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:45,930 INFO L129 PetriNetUnfolder]: 23/301 cut-off events. [2022-01-19 15:07:45,930 INFO L130 PetriNetUnfolder]: For 481/482 co-relation queries the response was YES. [2022-01-19 15:07:45,931 INFO L84 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 301 events. 23/301 cut-off events. For 481/482 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1659 event pairs, 19 based on Foata normal form. 1/292 useless extension candidates. Maximal degree in co-relation 657. Up to 62 conditions per place. [2022-01-19 15:07:45,932 INFO L132 encePairwiseOnDemand]: 73/81 looper letters, 42 selfloop transitions, 6 changer transitions 8/102 dead transitions. [2022-01-19 15:07:45,933 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 102 transitions, 532 flow [2022-01-19 15:07:45,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 15:07:45,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 15:07:45,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 555 transitions. [2022-01-19 15:07:45,935 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7613168724279835 [2022-01-19 15:07:45,935 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 555 transitions. [2022-01-19 15:07:45,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 555 transitions. [2022-01-19 15:07:45,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:45,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 555 transitions. [2022-01-19 15:07:45,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 61.666666666666664) internal successors, (555), 9 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:45,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:45,939 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:45,939 INFO L186 Difference]: Start difference. First operand has 114 places, 77 transitions, 302 flow. Second operand 9 states and 555 transitions. [2022-01-19 15:07:45,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 102 transitions, 532 flow [2022-01-19 15:07:45,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 102 transitions, 493 flow, removed 18 selfloop flow, removed 7 redundant places. [2022-01-19 15:07:45,944 INFO L242 Difference]: Finished difference. Result has 113 places, 78 transitions, 318 flow [2022-01-19 15:07:45,944 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=318, PETRI_PLACES=113, PETRI_TRANSITIONS=78} [2022-01-19 15:07:45,946 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 39 predicate places. [2022-01-19 15:07:45,946 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 78 transitions, 318 flow [2022-01-19 15:07:45,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:45,947 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:45,947 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] [2022-01-19 15:07:45,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 15:07:45,947 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:45,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:45,948 INFO L85 PathProgramCache]: Analyzing trace with hash -252513187, now seen corresponding path program 6 times [2022-01-19 15:07:45,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:45,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510303407] [2022-01-19 15:07:45,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:45,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:46,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:07:46,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:46,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510303407] [2022-01-19 15:07:46,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510303407] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:46,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:46,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 15:07:46,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28893095] [2022-01-19 15:07:46,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:46,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 15:07:46,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:46,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 15:07:46,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-01-19 15:07:46,108 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-01-19 15:07:46,109 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 78 transitions, 318 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:46,109 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:46,109 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-01-19 15:07:46,109 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:46,278 INFO L129 PetriNetUnfolder]: 22/282 cut-off events. [2022-01-19 15:07:46,278 INFO L130 PetriNetUnfolder]: For 489/491 co-relation queries the response was YES. [2022-01-19 15:07:46,279 INFO L84 FinitePrefix]: Finished finitePrefix Result has 683 conditions, 282 events. 22/282 cut-off events. For 489/491 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1501 event pairs, 20 based on Foata normal form. 2/274 useless extension candidates. Maximal degree in co-relation 630. Up to 62 conditions per place. [2022-01-19 15:07:46,280 INFO L132 encePairwiseOnDemand]: 73/81 looper letters, 34 selfloop transitions, 2 changer transitions 13/95 dead transitions. [2022-01-19 15:07:46,280 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 95 transitions, 499 flow [2022-01-19 15:07:46,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 15:07:46,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 15:07:46,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 548 transitions. [2022-01-19 15:07:46,282 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7517146776406035 [2022-01-19 15:07:46,282 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 548 transitions. [2022-01-19 15:07:46,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 548 transitions. [2022-01-19 15:07:46,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:46,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 548 transitions. [2022-01-19 15:07:46,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 60.888888888888886) internal successors, (548), 9 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:46,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:46,286 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:46,286 INFO L186 Difference]: Start difference. First operand has 113 places, 78 transitions, 318 flow. Second operand 9 states and 548 transitions. [2022-01-19 15:07:46,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 95 transitions, 499 flow [2022-01-19 15:07:46,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 95 transitions, 465 flow, removed 11 selfloop flow, removed 7 redundant places. [2022-01-19 15:07:46,292 INFO L242 Difference]: Finished difference. Result has 115 places, 74 transitions, 264 flow [2022-01-19 15:07:46,292 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=264, PETRI_PLACES=115, PETRI_TRANSITIONS=74} [2022-01-19 15:07:46,293 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 41 predicate places. [2022-01-19 15:07:46,294 INFO L470 AbstractCegarLoop]: Abstraction has has 115 places, 74 transitions, 264 flow [2022-01-19 15:07:46,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:46,294 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:46,294 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:07:46,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 15:07:46,295 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:46,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:46,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1111681351, now seen corresponding path program 7 times [2022-01-19 15:07:46,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:46,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10551383] [2022-01-19 15:07:46,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:46,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:46,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:46,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:07:46,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:46,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10551383] [2022-01-19 15:07:46,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10551383] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:46,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:46,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 15:07:46,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432318476] [2022-01-19 15:07:46,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:46,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 15:07:46,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:46,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 15:07:46,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-01-19 15:07:46,446 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-01-19 15:07:46,447 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 74 transitions, 264 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:46,447 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:46,447 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-01-19 15:07:46,448 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:46,606 INFO L129 PetriNetUnfolder]: 20/236 cut-off events. [2022-01-19 15:07:46,606 INFO L130 PetriNetUnfolder]: For 368/368 co-relation queries the response was YES. [2022-01-19 15:07:46,607 INFO L84 FinitePrefix]: Finished finitePrefix Result has 567 conditions, 236 events. 20/236 cut-off events. For 368/368 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1112 event pairs, 2 based on Foata normal form. 1/230 useless extension candidates. Maximal degree in co-relation 519. Up to 45 conditions per place. [2022-01-19 15:07:46,608 INFO L132 encePairwiseOnDemand]: 73/81 looper letters, 33 selfloop transitions, 5 changer transitions 9/93 dead transitions. [2022-01-19 15:07:46,608 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 93 transitions, 446 flow [2022-01-19 15:07:46,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 15:07:46,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 15:07:46,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 547 transitions. [2022-01-19 15:07:46,610 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7503429355281207 [2022-01-19 15:07:46,610 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 547 transitions. [2022-01-19 15:07:46,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 547 transitions. [2022-01-19 15:07:46,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:46,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 547 transitions. [2022-01-19 15:07:46,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 60.77777777777778) internal successors, (547), 9 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:46,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:46,614 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:46,614 INFO L186 Difference]: Start difference. First operand has 115 places, 74 transitions, 264 flow. Second operand 9 states and 547 transitions. [2022-01-19 15:07:46,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 93 transitions, 446 flow [2022-01-19 15:07:46,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 93 transitions, 403 flow, removed 18 selfloop flow, removed 10 redundant places. [2022-01-19 15:07:46,619 INFO L242 Difference]: Finished difference. Result has 108 places, 73 transitions, 251 flow [2022-01-19 15:07:46,619 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=251, PETRI_PLACES=108, PETRI_TRANSITIONS=73} [2022-01-19 15:07:46,620 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 34 predicate places. [2022-01-19 15:07:46,620 INFO L470 AbstractCegarLoop]: Abstraction has has 108 places, 73 transitions, 251 flow [2022-01-19 15:07:46,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:46,621 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:46,621 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:07:46,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 15:07:46,621 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:46,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:46,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1364185607, now seen corresponding path program 8 times [2022-01-19 15:07:46,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:46,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738293609] [2022-01-19 15:07:46,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:46,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:46,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:07:46,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:46,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738293609] [2022-01-19 15:07:46,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738293609] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:46,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:46,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 15:07:46,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438977655] [2022-01-19 15:07:46,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:46,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 15:07:46,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:46,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 15:07:46,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-19 15:07:46,755 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-01-19 15:07:46,755 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 73 transitions, 251 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:46,755 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:46,755 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-01-19 15:07:46,755 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:46,918 INFO L129 PetriNetUnfolder]: 18/211 cut-off events. [2022-01-19 15:07:46,918 INFO L130 PetriNetUnfolder]: For 274/274 co-relation queries the response was YES. [2022-01-19 15:07:46,919 INFO L84 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 211 events. 18/211 cut-off events. For 274/274 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 870 event pairs, 2 based on Foata normal form. 1/205 useless extension candidates. Maximal degree in co-relation 455. Up to 45 conditions per place. [2022-01-19 15:07:46,920 INFO L132 encePairwiseOnDemand]: 73/81 looper letters, 33 selfloop transitions, 2 changer transitions 11/92 dead transitions. [2022-01-19 15:07:46,920 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 92 transitions, 432 flow [2022-01-19 15:07:46,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 15:07:46,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 15:07:46,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 548 transitions. [2022-01-19 15:07:46,923 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7517146776406035 [2022-01-19 15:07:46,923 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 548 transitions. [2022-01-19 15:07:46,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 548 transitions. [2022-01-19 15:07:46,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:46,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 548 transitions. [2022-01-19 15:07:46,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 60.888888888888886) internal successors, (548), 9 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:46,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:46,927 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:46,928 INFO L186 Difference]: Start difference. First operand has 108 places, 73 transitions, 251 flow. Second operand 9 states and 548 transitions. [2022-01-19 15:07:46,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 92 transitions, 432 flow [2022-01-19 15:07:46,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 92 transitions, 381 flow, removed 13 selfloop flow, removed 12 redundant places. [2022-01-19 15:07:46,931 INFO L242 Difference]: Finished difference. Result has 104 places, 70 transitions, 201 flow [2022-01-19 15:07:46,931 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=201, PETRI_PLACES=104, PETRI_TRANSITIONS=70} [2022-01-19 15:07:46,932 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 30 predicate places. [2022-01-19 15:07:46,932 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 70 transitions, 201 flow [2022-01-19 15:07:46,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:46,932 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:46,933 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] [2022-01-19 15:07:46,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-19 15:07:46,933 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:46,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:46,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1784837601, now seen corresponding path program 9 times [2022-01-19 15:07:46,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:46,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010009659] [2022-01-19 15:07:46,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:46,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:46,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:47,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:07:47,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:47,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010009659] [2022-01-19 15:07:47,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010009659] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:47,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:47,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 15:07:47,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526541963] [2022-01-19 15:07:47,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:47,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 15:07:47,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:47,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 15:07:47,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-19 15:07:47,068 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-01-19 15:07:47,069 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 70 transitions, 201 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:47,069 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:47,069 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-01-19 15:07:47,069 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:47,204 INFO L129 PetriNetUnfolder]: 17/200 cut-off events. [2022-01-19 15:07:47,204 INFO L130 PetriNetUnfolder]: For 166/166 co-relation queries the response was YES. [2022-01-19 15:07:47,204 INFO L84 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 200 events. 17/200 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 789 event pairs, 2 based on Foata normal form. 1/195 useless extension candidates. Maximal degree in co-relation 405. Up to 40 conditions per place. [2022-01-19 15:07:47,206 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 28 selfloop transitions, 5 changer transitions 8/87 dead transitions. [2022-01-19 15:07:47,206 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 87 transitions, 360 flow [2022-01-19 15:07:47,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 15:07:47,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 15:07:47,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 543 transitions. [2022-01-19 15:07:47,208 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7448559670781894 [2022-01-19 15:07:47,208 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 543 transitions. [2022-01-19 15:07:47,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 543 transitions. [2022-01-19 15:07:47,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:47,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 543 transitions. [2022-01-19 15:07:47,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 60.333333333333336) internal successors, (543), 9 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:47,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:47,211 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:47,211 INFO L186 Difference]: Start difference. First operand has 104 places, 70 transitions, 201 flow. Second operand 9 states and 543 transitions. [2022-01-19 15:07:47,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 87 transitions, 360 flow [2022-01-19 15:07:47,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 87 transitions, 327 flow, removed 9 selfloop flow, removed 11 redundant places. [2022-01-19 15:07:47,217 INFO L242 Difference]: Finished difference. Result has 99 places, 70 transitions, 199 flow [2022-01-19 15:07:47,217 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=199, PETRI_PLACES=99, PETRI_TRANSITIONS=70} [2022-01-19 15:07:47,217 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 25 predicate places. [2022-01-19 15:07:47,218 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 70 transitions, 199 flow [2022-01-19 15:07:47,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:47,218 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:47,218 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:07:47,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-19 15:07:47,218 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:47,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:47,219 INFO L85 PathProgramCache]: Analyzing trace with hash -322699621, now seen corresponding path program 10 times [2022-01-19 15:07:47,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:47,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962219443] [2022-01-19 15:07:47,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:47,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:47,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:07:47,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:47,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962219443] [2022-01-19 15:07:47,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962219443] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:47,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:47,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 15:07:47,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450969] [2022-01-19 15:07:47,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:47,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 15:07:47,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:47,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 15:07:47,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-19 15:07:47,339 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-01-19 15:07:47,340 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 70 transitions, 199 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:47,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:47,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-01-19 15:07:47,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:47,484 INFO L129 PetriNetUnfolder]: 17/183 cut-off events. [2022-01-19 15:07:47,484 INFO L130 PetriNetUnfolder]: For 98/98 co-relation queries the response was YES. [2022-01-19 15:07:47,484 INFO L84 FinitePrefix]: Finished finitePrefix Result has 394 conditions, 183 events. 17/183 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 679 event pairs, 2 based on Foata normal form. 2/178 useless extension candidates. Maximal degree in co-relation 372. Up to 38 conditions per place. [2022-01-19 15:07:47,485 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 25 selfloop transitions, 3 changer transitions 13/85 dead transitions. [2022-01-19 15:07:47,485 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 85 transitions, 344 flow [2022-01-19 15:07:47,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 15:07:47,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 15:07:47,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 542 transitions. [2022-01-19 15:07:47,486 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7434842249657064 [2022-01-19 15:07:47,486 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 542 transitions. [2022-01-19 15:07:47,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 542 transitions. [2022-01-19 15:07:47,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:47,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 542 transitions. [2022-01-19 15:07:47,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 60.22222222222222) internal successors, (542), 9 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:47,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:47,490 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:47,490 INFO L186 Difference]: Start difference. First operand has 99 places, 70 transitions, 199 flow. Second operand 9 states and 542 transitions. [2022-01-19 15:07:47,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 85 transitions, 344 flow [2022-01-19 15:07:47,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 85 transitions, 316 flow, removed 8 selfloop flow, removed 8 redundant places. [2022-01-19 15:07:47,492 INFO L242 Difference]: Finished difference. Result has 99 places, 66 transitions, 171 flow [2022-01-19 15:07:47,492 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=171, PETRI_PLACES=99, PETRI_TRANSITIONS=66} [2022-01-19 15:07:47,493 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 25 predicate places. [2022-01-19 15:07:47,493 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 66 transitions, 171 flow [2022-01-19 15:07:47,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:47,493 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:47,494 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:07:47,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-19 15:07:47,494 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:47,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:47,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1253106300, now seen corresponding path program 1 times [2022-01-19 15:07:47,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:47,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868314776] [2022-01-19 15:07:47,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:47,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:47,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:07:47,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:47,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868314776] [2022-01-19 15:07:47,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868314776] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:47,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:47,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 15:07:47,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439437336] [2022-01-19 15:07:47,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:47,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 15:07:47,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:47,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 15:07:47,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 15:07:47,622 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 15:07:47,623 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 66 transitions, 171 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:47,623 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:47,623 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 15:07:47,623 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:47,900 INFO L129 PetriNetUnfolder]: 26/209 cut-off events. [2022-01-19 15:07:47,900 INFO L130 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2022-01-19 15:07:47,900 INFO L84 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 209 events. 26/209 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 812 event pairs, 0 based on Foata normal form. 3/209 useless extension candidates. Maximal degree in co-relation 440. Up to 30 conditions per place. [2022-01-19 15:07:47,901 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 36 selfloop transitions, 3 changer transitions 21/102 dead transitions. [2022-01-19 15:07:47,901 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 102 transitions, 496 flow [2022-01-19 15:07:47,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-19 15:07:47,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-01-19 15:07:47,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 813 transitions. [2022-01-19 15:07:47,903 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.716931216931217 [2022-01-19 15:07:47,903 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 813 transitions. [2022-01-19 15:07:47,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 813 transitions. [2022-01-19 15:07:47,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:47,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 813 transitions. [2022-01-19 15:07:47,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 58.07142857142857) internal successors, (813), 14 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:47,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 81.0) internal successors, (1215), 15 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:47,909 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 81.0) internal successors, (1215), 15 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:47,909 INFO L186 Difference]: Start difference. First operand has 99 places, 66 transitions, 171 flow. Second operand 14 states and 813 transitions. [2022-01-19 15:07:47,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 102 transitions, 496 flow [2022-01-19 15:07:47,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 102 transitions, 407 flow, removed 30 selfloop flow, removed 9 redundant places. [2022-01-19 15:07:47,912 INFO L242 Difference]: Finished difference. Result has 96 places, 66 transitions, 182 flow [2022-01-19 15:07:47,913 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=182, PETRI_PLACES=96, PETRI_TRANSITIONS=66} [2022-01-19 15:07:47,913 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 22 predicate places. [2022-01-19 15:07:47,913 INFO L470 AbstractCegarLoop]: Abstraction has has 96 places, 66 transitions, 182 flow [2022-01-19 15:07:47,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:47,914 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:47,914 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] [2022-01-19 15:07:47,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-19 15:07:47,914 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:47,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:47,914 INFO L85 PathProgramCache]: Analyzing trace with hash 706603769, now seen corresponding path program 1 times [2022-01-19 15:07:47,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:47,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913896826] [2022-01-19 15:07:47,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:47,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:48,043 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 15:07:48,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:48,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913896826] [2022-01-19 15:07:48,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913896826] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:48,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:48,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 15:07:48,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762100973] [2022-01-19 15:07:48,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:48,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 15:07:48,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:48,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 15:07:48,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-01-19 15:07:48,046 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-01-19 15:07:48,046 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 66 transitions, 182 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:48,046 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:48,046 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-01-19 15:07:48,047 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:48,201 INFO L129 PetriNetUnfolder]: 18/196 cut-off events. [2022-01-19 15:07:48,202 INFO L130 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2022-01-19 15:07:48,202 INFO L84 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 196 events. 18/196 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 745 event pairs, 8 based on Foata normal form. 1/190 useless extension candidates. Maximal degree in co-relation 407. Up to 50 conditions per place. [2022-01-19 15:07:48,203 INFO L132 encePairwiseOnDemand]: 73/81 looper letters, 35 selfloop transitions, 3 changer transitions 7/89 dead transitions. [2022-01-19 15:07:48,203 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 89 transitions, 390 flow [2022-01-19 15:07:48,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 15:07:48,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 15:07:48,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 548 transitions. [2022-01-19 15:07:48,204 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7517146776406035 [2022-01-19 15:07:48,204 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 548 transitions. [2022-01-19 15:07:48,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 548 transitions. [2022-01-19 15:07:48,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:48,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 548 transitions. [2022-01-19 15:07:48,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 60.888888888888886) internal successors, (548), 9 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:48,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:48,207 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:48,207 INFO L186 Difference]: Start difference. First operand has 96 places, 66 transitions, 182 flow. Second operand 9 states and 548 transitions. [2022-01-19 15:07:48,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 89 transitions, 390 flow [2022-01-19 15:07:48,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 89 transitions, 322 flow, removed 28 selfloop flow, removed 12 redundant places. [2022-01-19 15:07:48,209 INFO L242 Difference]: Finished difference. Result has 90 places, 68 transitions, 194 flow [2022-01-19 15:07:48,209 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=194, PETRI_PLACES=90, PETRI_TRANSITIONS=68} [2022-01-19 15:07:48,210 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 16 predicate places. [2022-01-19 15:07:48,210 INFO L470 AbstractCegarLoop]: Abstraction has has 90 places, 68 transitions, 194 flow [2022-01-19 15:07:48,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:48,210 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:48,210 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:07:48,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-19 15:07:48,211 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:48,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:48,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1352411004, now seen corresponding path program 2 times [2022-01-19 15:07:48,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:48,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796373206] [2022-01-19 15:07:48,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:48,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:48,309 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 15:07:48,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:48,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796373206] [2022-01-19 15:07:48,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796373206] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:48,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:48,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 15:07:48,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148221249] [2022-01-19 15:07:48,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:48,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 15:07:48,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:48,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 15:07:48,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 15:07:48,311 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 15:07:48,312 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 68 transitions, 194 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:48,312 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:48,312 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 15:07:48,312 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:48,640 INFO L129 PetriNetUnfolder]: 28/370 cut-off events. [2022-01-19 15:07:48,640 INFO L130 PetriNetUnfolder]: For 233/236 co-relation queries the response was YES. [2022-01-19 15:07:48,641 INFO L84 FinitePrefix]: Finished finitePrefix Result has 814 conditions, 370 events. 28/370 cut-off events. For 233/236 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2217 event pairs, 4 based on Foata normal form. 5/369 useless extension candidates. Maximal degree in co-relation 762. Up to 52 conditions per place. [2022-01-19 15:07:48,642 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 62 selfloop transitions, 9 changer transitions 13/126 dead transitions. [2022-01-19 15:07:48,642 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 126 transitions, 624 flow [2022-01-19 15:07:48,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 15:07:48,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 15:07:48,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 945 transitions. [2022-01-19 15:07:48,644 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2022-01-19 15:07:48,644 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 945 transitions. [2022-01-19 15:07:48,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 945 transitions. [2022-01-19 15:07:48,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:48,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 945 transitions. [2022-01-19 15:07:48,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 59.0625) internal successors, (945), 16 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:48,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 81.0) internal successors, (1377), 17 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:48,648 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 81.0) internal successors, (1377), 17 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:48,648 INFO L186 Difference]: Start difference. First operand has 90 places, 68 transitions, 194 flow. Second operand 16 states and 945 transitions. [2022-01-19 15:07:48,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 126 transitions, 624 flow [2022-01-19 15:07:48,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 126 transitions, 573 flow, removed 25 selfloop flow, removed 5 redundant places. [2022-01-19 15:07:48,651 INFO L242 Difference]: Finished difference. Result has 110 places, 75 transitions, 286 flow [2022-01-19 15:07:48,651 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=286, PETRI_PLACES=110, PETRI_TRANSITIONS=75} [2022-01-19 15:07:48,652 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 36 predicate places. [2022-01-19 15:07:48,652 INFO L470 AbstractCegarLoop]: Abstraction has has 110 places, 75 transitions, 286 flow [2022-01-19 15:07:48,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:48,652 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:48,653 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:07:48,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-19 15:07:48,653 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:48,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:48,653 INFO L85 PathProgramCache]: Analyzing trace with hash -631538826, now seen corresponding path program 3 times [2022-01-19 15:07:48,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:48,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345162377] [2022-01-19 15:07:48,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:48,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:48,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:48,764 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 15:07:48,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:48,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345162377] [2022-01-19 15:07:48,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345162377] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:48,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:48,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 15:07:48,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918660747] [2022-01-19 15:07:48,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:48,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 15:07:48,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:48,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 15:07:48,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 15:07:48,766 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 15:07:48,767 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 75 transitions, 286 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:48,767 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:48,767 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 15:07:48,767 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:48,956 INFO L129 PetriNetUnfolder]: 23/361 cut-off events. [2022-01-19 15:07:48,956 INFO L130 PetriNetUnfolder]: For 507/510 co-relation queries the response was YES. [2022-01-19 15:07:48,957 INFO L84 FinitePrefix]: Finished finitePrefix Result has 929 conditions, 361 events. 23/361 cut-off events. For 507/510 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2202 event pairs, 3 based on Foata normal form. 2/355 useless extension candidates. Maximal degree in co-relation 859. Up to 84 conditions per place. [2022-01-19 15:07:48,958 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 33 selfloop transitions, 10 changer transitions 12/97 dead transitions. [2022-01-19 15:07:48,958 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 97 transitions, 534 flow [2022-01-19 15:07:48,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 15:07:48,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 15:07:48,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 583 transitions. [2022-01-19 15:07:48,960 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7197530864197531 [2022-01-19 15:07:48,960 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 583 transitions. [2022-01-19 15:07:48,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 583 transitions. [2022-01-19 15:07:48,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:48,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 583 transitions. [2022-01-19 15:07:48,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.3) internal successors, (583), 10 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:48,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:48,962 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:48,962 INFO L186 Difference]: Start difference. First operand has 110 places, 75 transitions, 286 flow. Second operand 10 states and 583 transitions. [2022-01-19 15:07:48,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 97 transitions, 534 flow [2022-01-19 15:07:48,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 97 transitions, 504 flow, removed 10 selfloop flow, removed 8 redundant places. [2022-01-19 15:07:48,966 INFO L242 Difference]: Finished difference. Result has 111 places, 75 transitions, 305 flow [2022-01-19 15:07:48,966 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=305, PETRI_PLACES=111, PETRI_TRANSITIONS=75} [2022-01-19 15:07:48,966 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 37 predicate places. [2022-01-19 15:07:48,966 INFO L470 AbstractCegarLoop]: Abstraction has has 111 places, 75 transitions, 305 flow [2022-01-19 15:07:48,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:48,967 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:48,967 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] [2022-01-19 15:07:48,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-19 15:07:48,967 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:48,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:48,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1379330042, now seen corresponding path program 4 times [2022-01-19 15:07:48,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:48,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121296997] [2022-01-19 15:07:48,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:48,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:49,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:07:49,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:49,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121296997] [2022-01-19 15:07:49,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121296997] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:49,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:49,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 15:07:49,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362889411] [2022-01-19 15:07:49,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:49,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 15:07:49,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:49,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 15:07:49,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 15:07:49,074 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 15:07:49,075 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 75 transitions, 305 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:49,075 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:49,075 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 15:07:49,075 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:49,284 INFO L129 PetriNetUnfolder]: 28/408 cut-off events. [2022-01-19 15:07:49,284 INFO L130 PetriNetUnfolder]: For 887/890 co-relation queries the response was YES. [2022-01-19 15:07:49,285 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1110 conditions, 408 events. 28/408 cut-off events. For 887/890 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2623 event pairs, 8 based on Foata normal form. 4/405 useless extension candidates. Maximal degree in co-relation 1038. Up to 119 conditions per place. [2022-01-19 15:07:49,286 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 50 selfloop transitions, 6 changer transitions 11/109 dead transitions. [2022-01-19 15:07:49,286 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 109 transitions, 724 flow [2022-01-19 15:07:49,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 15:07:49,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 15:07:49,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 593 transitions. [2022-01-19 15:07:49,288 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7320987654320987 [2022-01-19 15:07:49,288 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 593 transitions. [2022-01-19 15:07:49,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 593 transitions. [2022-01-19 15:07:49,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:49,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 593 transitions. [2022-01-19 15:07:49,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 59.3) internal successors, (593), 10 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:49,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:49,290 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:49,291 INFO L186 Difference]: Start difference. First operand has 111 places, 75 transitions, 305 flow. Second operand 10 states and 593 transitions. [2022-01-19 15:07:49,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 109 transitions, 724 flow [2022-01-19 15:07:49,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 109 transitions, 657 flow, removed 11 selfloop flow, removed 8 redundant places. [2022-01-19 15:07:49,295 INFO L242 Difference]: Finished difference. Result has 114 places, 77 transitions, 327 flow [2022-01-19 15:07:49,295 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=327, PETRI_PLACES=114, PETRI_TRANSITIONS=77} [2022-01-19 15:07:49,296 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 40 predicate places. [2022-01-19 15:07:49,296 INFO L470 AbstractCegarLoop]: Abstraction has has 114 places, 77 transitions, 327 flow [2022-01-19 15:07:49,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:49,296 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:49,296 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:07:49,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-19 15:07:49,298 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:49,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:49,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1732848334, now seen corresponding path program 5 times [2022-01-19 15:07:49,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:49,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742799766] [2022-01-19 15:07:49,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:49,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:49,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:49,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:07:49,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:49,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742799766] [2022-01-19 15:07:49,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742799766] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:49,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:49,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 15:07:49,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494810648] [2022-01-19 15:07:49,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:49,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 15:07:49,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:49,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 15:07:49,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 15:07:49,411 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 15:07:49,412 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 77 transitions, 327 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:49,412 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:49,412 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 15:07:49,412 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:49,639 INFO L129 PetriNetUnfolder]: 24/436 cut-off events. [2022-01-19 15:07:49,640 INFO L130 PetriNetUnfolder]: For 894/900 co-relation queries the response was YES. [2022-01-19 15:07:49,641 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1162 conditions, 436 events. 24/436 cut-off events. For 894/900 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2975 event pairs, 12 based on Foata normal form. 4/429 useless extension candidates. Maximal degree in co-relation 1083. Up to 76 conditions per place. [2022-01-19 15:07:49,642 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 64 selfloop transitions, 8 changer transitions 9/123 dead transitions. [2022-01-19 15:07:49,642 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 123 transitions, 779 flow [2022-01-19 15:07:49,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 15:07:49,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 15:07:49,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 610 transitions. [2022-01-19 15:07:49,644 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7530864197530864 [2022-01-19 15:07:49,644 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 610 transitions. [2022-01-19 15:07:49,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 610 transitions. [2022-01-19 15:07:49,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:49,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 610 transitions. [2022-01-19 15:07:49,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 61.0) internal successors, (610), 10 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:49,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:49,646 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:49,647 INFO L186 Difference]: Start difference. First operand has 114 places, 77 transitions, 327 flow. Second operand 10 states and 610 transitions. [2022-01-19 15:07:49,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 123 transitions, 779 flow [2022-01-19 15:07:49,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 123 transitions, 723 flow, removed 25 selfloop flow, removed 6 redundant places. [2022-01-19 15:07:49,652 INFO L242 Difference]: Finished difference. Result has 120 places, 81 transitions, 401 flow [2022-01-19 15:07:49,652 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=401, PETRI_PLACES=120, PETRI_TRANSITIONS=81} [2022-01-19 15:07:49,652 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 46 predicate places. [2022-01-19 15:07:49,652 INFO L470 AbstractCegarLoop]: Abstraction has has 120 places, 81 transitions, 401 flow [2022-01-19 15:07:49,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:49,653 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:49,653 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:07:49,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-19 15:07:49,653 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:49,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:49,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1744902709, now seen corresponding path program 2 times [2022-01-19 15:07:49,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:49,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450078919] [2022-01-19 15:07:49,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:49,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:49,747 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 15:07:49,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:49,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450078919] [2022-01-19 15:07:49,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450078919] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:49,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:49,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 15:07:49,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589423274] [2022-01-19 15:07:49,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:49,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 15:07:49,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:49,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 15:07:49,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-01-19 15:07:49,750 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-01-19 15:07:49,750 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 81 transitions, 401 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:49,750 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:49,750 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-01-19 15:07:49,751 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:49,921 INFO L129 PetriNetUnfolder]: 21/419 cut-off events. [2022-01-19 15:07:49,921 INFO L130 PetriNetUnfolder]: For 977/983 co-relation queries the response was YES. [2022-01-19 15:07:49,922 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1155 conditions, 419 events. 21/419 cut-off events. For 977/983 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2780 event pairs, 19 based on Foata normal form. 1/411 useless extension candidates. Maximal degree in co-relation 1073. Up to 100 conditions per place. [2022-01-19 15:07:49,923 INFO L132 encePairwiseOnDemand]: 73/81 looper letters, 49 selfloop transitions, 7 changer transitions 7/109 dead transitions. [2022-01-19 15:07:49,923 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 109 transitions, 702 flow [2022-01-19 15:07:49,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 15:07:49,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 15:07:49,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 552 transitions. [2022-01-19 15:07:49,924 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.757201646090535 [2022-01-19 15:07:49,924 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 552 transitions. [2022-01-19 15:07:49,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 552 transitions. [2022-01-19 15:07:49,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:49,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 552 transitions. [2022-01-19 15:07:49,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 61.333333333333336) internal successors, (552), 9 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:49,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:49,927 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:49,927 INFO L186 Difference]: Start difference. First operand has 120 places, 81 transitions, 401 flow. Second operand 9 states and 552 transitions. [2022-01-19 15:07:49,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 109 transitions, 702 flow [2022-01-19 15:07:49,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 109 transitions, 658 flow, removed 19 selfloop flow, removed 5 redundant places. [2022-01-19 15:07:49,933 INFO L242 Difference]: Finished difference. Result has 127 places, 84 transitions, 450 flow [2022-01-19 15:07:49,933 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=450, PETRI_PLACES=127, PETRI_TRANSITIONS=84} [2022-01-19 15:07:49,933 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 53 predicate places. [2022-01-19 15:07:49,933 INFO L470 AbstractCegarLoop]: Abstraction has has 127 places, 84 transitions, 450 flow [2022-01-19 15:07:49,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:49,934 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:49,934 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] [2022-01-19 15:07:49,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-19 15:07:49,934 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:49,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:49,934 INFO L85 PathProgramCache]: Analyzing trace with hash 307404330, now seen corresponding path program 6 times [2022-01-19 15:07:49,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:49,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180501368] [2022-01-19 15:07:49,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:49,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:50,033 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 15:07:50,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:50,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180501368] [2022-01-19 15:07:50,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180501368] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:50,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:50,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 15:07:50,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085689539] [2022-01-19 15:07:50,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:50,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 15:07:50,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:50,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 15:07:50,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 15:07:50,035 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 15:07:50,036 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 84 transitions, 450 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:50,036 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:50,036 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 15:07:50,036 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:50,229 INFO L129 PetriNetUnfolder]: 21/442 cut-off events. [2022-01-19 15:07:50,229 INFO L130 PetriNetUnfolder]: For 1205/1217 co-relation queries the response was YES. [2022-01-19 15:07:50,230 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1251 conditions, 442 events. 21/442 cut-off events. For 1205/1217 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3004 event pairs, 10 based on Foata normal form. 3/437 useless extension candidates. Maximal degree in co-relation 1160. Up to 135 conditions per place. [2022-01-19 15:07:50,231 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 43 selfloop transitions, 16 changer transitions 10/111 dead transitions. [2022-01-19 15:07:50,232 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 111 transitions, 797 flow [2022-01-19 15:07:50,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 15:07:50,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 15:07:50,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 588 transitions. [2022-01-19 15:07:50,235 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.725925925925926 [2022-01-19 15:07:50,235 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 588 transitions. [2022-01-19 15:07:50,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 588 transitions. [2022-01-19 15:07:50,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:50,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 588 transitions. [2022-01-19 15:07:50,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.8) internal successors, (588), 10 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:50,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:50,238 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:50,238 INFO L186 Difference]: Start difference. First operand has 127 places, 84 transitions, 450 flow. Second operand 10 states and 588 transitions. [2022-01-19 15:07:50,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 111 transitions, 797 flow [2022-01-19 15:07:50,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 111 transitions, 761 flow, removed 16 selfloop flow, removed 4 redundant places. [2022-01-19 15:07:50,245 INFO L242 Difference]: Finished difference. Result has 136 places, 87 transitions, 526 flow [2022-01-19 15:07:50,245 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=526, PETRI_PLACES=136, PETRI_TRANSITIONS=87} [2022-01-19 15:07:50,245 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 62 predicate places. [2022-01-19 15:07:50,246 INFO L470 AbstractCegarLoop]: Abstraction has has 136 places, 87 transitions, 526 flow [2022-01-19 15:07:50,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:50,246 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:50,246 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:07:50,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-19 15:07:50,246 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:50,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:50,247 INFO L85 PathProgramCache]: Analyzing trace with hash 260750753, now seen corresponding path program 3 times [2022-01-19 15:07:50,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:50,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207705071] [2022-01-19 15:07:50,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:50,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:50,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:07:50,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:50,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207705071] [2022-01-19 15:07:50,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207705071] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:50,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:50,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 15:07:50,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613860741] [2022-01-19 15:07:50,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:50,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 15:07:50,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:50,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 15:07:50,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-01-19 15:07:50,360 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-01-19 15:07:50,361 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 87 transitions, 526 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:50,361 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:50,361 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-01-19 15:07:50,361 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:50,533 INFO L129 PetriNetUnfolder]: 18/451 cut-off events. [2022-01-19 15:07:50,533 INFO L130 PetriNetUnfolder]: For 1490/1504 co-relation queries the response was YES. [2022-01-19 15:07:50,535 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1307 conditions, 451 events. 18/451 cut-off events. For 1490/1504 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3153 event pairs, 4 based on Foata normal form. 5/450 useless extension candidates. Maximal degree in co-relation 1217. Up to 125 conditions per place. [2022-01-19 15:07:50,536 INFO L132 encePairwiseOnDemand]: 73/81 looper letters, 47 selfloop transitions, 12 changer transitions 13/118 dead transitions. [2022-01-19 15:07:50,536 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 118 transitions, 940 flow [2022-01-19 15:07:50,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 15:07:50,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 15:07:50,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 549 transitions. [2022-01-19 15:07:50,537 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7530864197530864 [2022-01-19 15:07:50,537 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 549 transitions. [2022-01-19 15:07:50,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 549 transitions. [2022-01-19 15:07:50,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:50,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 549 transitions. [2022-01-19 15:07:50,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 61.0) internal successors, (549), 9 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:50,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:50,540 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:50,540 INFO L186 Difference]: Start difference. First operand has 136 places, 87 transitions, 526 flow. Second operand 9 states and 549 transitions. [2022-01-19 15:07:50,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 118 transitions, 940 flow [2022-01-19 15:07:50,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 118 transitions, 880 flow, removed 21 selfloop flow, removed 5 redundant places. [2022-01-19 15:07:50,547 INFO L242 Difference]: Finished difference. Result has 142 places, 89 transitions, 574 flow [2022-01-19 15:07:50,548 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=574, PETRI_PLACES=142, PETRI_TRANSITIONS=89} [2022-01-19 15:07:50,548 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 68 predicate places. [2022-01-19 15:07:50,548 INFO L470 AbstractCegarLoop]: Abstraction has has 142 places, 89 transitions, 574 flow [2022-01-19 15:07:50,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:50,548 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:50,549 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:07:50,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-19 15:07:50,549 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:50,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:50,549 INFO L85 PathProgramCache]: Analyzing trace with hash -658061558, now seen corresponding path program 7 times [2022-01-19 15:07:50,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:50,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971376570] [2022-01-19 15:07:50,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:50,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:50,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:07:50,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:50,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971376570] [2022-01-19 15:07:50,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971376570] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:50,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:50,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 15:07:50,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122196367] [2022-01-19 15:07:50,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:50,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 15:07:50,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:50,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 15:07:50,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 15:07:50,672 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 15:07:50,672 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 89 transitions, 574 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:50,672 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:50,673 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 15:07:50,673 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:50,922 INFO L129 PetriNetUnfolder]: 17/418 cut-off events. [2022-01-19 15:07:50,923 INFO L130 PetriNetUnfolder]: For 1553/1567 co-relation queries the response was YES. [2022-01-19 15:07:50,924 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1251 conditions, 418 events. 17/418 cut-off events. For 1553/1567 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2820 event pairs, 11 based on Foata normal form. 5/415 useless extension candidates. Maximal degree in co-relation 1158. Up to 86 conditions per place. [2022-01-19 15:07:50,925 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 59 selfloop transitions, 12 changer transitions 11/124 dead transitions. [2022-01-19 15:07:50,925 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 124 transitions, 1038 flow [2022-01-19 15:07:50,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 15:07:50,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 15:07:50,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 597 transitions. [2022-01-19 15:07:50,926 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.737037037037037 [2022-01-19 15:07:50,926 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 597 transitions. [2022-01-19 15:07:50,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 597 transitions. [2022-01-19 15:07:50,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:50,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 597 transitions. [2022-01-19 15:07:50,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 59.7) internal successors, (597), 10 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:50,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:50,929 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:50,929 INFO L186 Difference]: Start difference. First operand has 142 places, 89 transitions, 574 flow. Second operand 10 states and 597 transitions. [2022-01-19 15:07:50,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 124 transitions, 1038 flow [2022-01-19 15:07:50,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 124 transitions, 981 flow, removed 20 selfloop flow, removed 5 redundant places. [2022-01-19 15:07:50,937 INFO L242 Difference]: Finished difference. Result has 151 places, 94 transitions, 675 flow [2022-01-19 15:07:50,937 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=675, PETRI_PLACES=151, PETRI_TRANSITIONS=94} [2022-01-19 15:07:50,937 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 77 predicate places. [2022-01-19 15:07:50,937 INFO L470 AbstractCegarLoop]: Abstraction has has 151 places, 94 transitions, 675 flow [2022-01-19 15:07:50,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:50,938 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:50,938 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:07:50,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-19 15:07:50,938 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:50,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:50,938 INFO L85 PathProgramCache]: Analyzing trace with hash 432307051, now seen corresponding path program 4 times [2022-01-19 15:07:50,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:50,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802504017] [2022-01-19 15:07:50,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:50,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:51,026 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 15:07:51,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:51,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802504017] [2022-01-19 15:07:51,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802504017] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:51,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:51,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 15:07:51,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624457665] [2022-01-19 15:07:51,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:51,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 15:07:51,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:51,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 15:07:51,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-19 15:07:51,028 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-01-19 15:07:51,029 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 94 transitions, 675 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:51,029 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:51,029 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-01-19 15:07:51,029 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:51,188 INFO L129 PetriNetUnfolder]: 17/403 cut-off events. [2022-01-19 15:07:51,188 INFO L130 PetriNetUnfolder]: For 1636/1652 co-relation queries the response was YES. [2022-01-19 15:07:51,189 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1250 conditions, 403 events. 17/403 cut-off events. For 1636/1652 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2658 event pairs, 7 based on Foata normal form. 6/401 useless extension candidates. Maximal degree in co-relation 1162. Up to 124 conditions per place. [2022-01-19 15:07:51,191 INFO L132 encePairwiseOnDemand]: 73/81 looper letters, 40 selfloop transitions, 10 changer transitions 19/115 dead transitions. [2022-01-19 15:07:51,191 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 115 transitions, 1043 flow [2022-01-19 15:07:51,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 15:07:51,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 15:07:51,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 543 transitions. [2022-01-19 15:07:51,193 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7448559670781894 [2022-01-19 15:07:51,194 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 543 transitions. [2022-01-19 15:07:51,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 543 transitions. [2022-01-19 15:07:51,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:51,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 543 transitions. [2022-01-19 15:07:51,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 60.333333333333336) internal successors, (543), 9 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:51,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:51,196 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:51,196 INFO L186 Difference]: Start difference. First operand has 151 places, 94 transitions, 675 flow. Second operand 9 states and 543 transitions. [2022-01-19 15:07:51,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 115 transitions, 1043 flow [2022-01-19 15:07:51,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 115 transitions, 1006 flow, removed 17 selfloop flow, removed 5 redundant places. [2022-01-19 15:07:51,205 INFO L242 Difference]: Finished difference. Result has 154 places, 90 transitions, 594 flow [2022-01-19 15:07:51,205 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=594, PETRI_PLACES=154, PETRI_TRANSITIONS=90} [2022-01-19 15:07:51,206 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 80 predicate places. [2022-01-19 15:07:51,206 INFO L470 AbstractCegarLoop]: Abstraction has has 154 places, 90 transitions, 594 flow [2022-01-19 15:07:51,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:51,206 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:51,206 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:07:51,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-19 15:07:51,207 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:51,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:51,207 INFO L85 PathProgramCache]: Analyzing trace with hash -881258538, now seen corresponding path program 8 times [2022-01-19 15:07:51,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:51,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140660277] [2022-01-19 15:07:51,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:51,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:51,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:07:51,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:51,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140660277] [2022-01-19 15:07:51,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140660277] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:51,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:51,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 15:07:51,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508201546] [2022-01-19 15:07:51,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:51,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 15:07:51,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:51,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 15:07:51,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 15:07:51,317 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 15:07:51,318 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 90 transitions, 594 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:51,318 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:51,318 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 15:07:51,318 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:51,536 INFO L129 PetriNetUnfolder]: 14/364 cut-off events. [2022-01-19 15:07:51,536 INFO L130 PetriNetUnfolder]: For 1374/1391 co-relation queries the response was YES. [2022-01-19 15:07:51,539 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1103 conditions, 364 events. 14/364 cut-off events. For 1374/1391 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2264 event pairs, 4 based on Foata normal form. 5/363 useless extension candidates. Maximal degree in co-relation 1015. Up to 109 conditions per place. [2022-01-19 15:07:51,540 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 48 selfloop transitions, 13 changer transitions 13/116 dead transitions. [2022-01-19 15:07:51,540 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 116 transitions, 958 flow [2022-01-19 15:07:51,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 15:07:51,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 15:07:51,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 590 transitions. [2022-01-19 15:07:51,542 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7283950617283951 [2022-01-19 15:07:51,542 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 590 transitions. [2022-01-19 15:07:51,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 590 transitions. [2022-01-19 15:07:51,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:51,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 590 transitions. [2022-01-19 15:07:51,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 59.0) internal successors, (590), 10 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 15:07:51,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:51,545 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:51,546 INFO L186 Difference]: Start difference. First operand has 154 places, 90 transitions, 594 flow. Second operand 10 states and 590 transitions. [2022-01-19 15:07:51,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 116 transitions, 958 flow [2022-01-19 15:07:51,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 116 transitions, 908 flow, removed 18 selfloop flow, removed 8 redundant places. [2022-01-19 15:07:51,554 INFO L242 Difference]: Finished difference. Result has 153 places, 91 transitions, 615 flow [2022-01-19 15:07:51,554 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=615, PETRI_PLACES=153, PETRI_TRANSITIONS=91} [2022-01-19 15:07:51,554 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 79 predicate places. [2022-01-19 15:07:51,555 INFO L470 AbstractCegarLoop]: Abstraction has has 153 places, 91 transitions, 615 flow [2022-01-19 15:07:51,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:51,555 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:51,555 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:07:51,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-19 15:07:51,556 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:51,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:51,556 INFO L85 PathProgramCache]: Analyzing trace with hash -2144980316, now seen corresponding path program 9 times [2022-01-19 15:07:51,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:51,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222636044] [2022-01-19 15:07:51,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:51,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:51,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:07:51,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:51,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222636044] [2022-01-19 15:07:51,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222636044] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:51,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:51,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 15:07:51,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874935901] [2022-01-19 15:07:51,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:51,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 15:07:51,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:51,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 15:07:51,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 15:07:51,675 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 15:07:51,676 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 91 transitions, 615 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:51,676 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:51,676 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 15:07:51,676 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:51,851 INFO L129 PetriNetUnfolder]: 13/346 cut-off events. [2022-01-19 15:07:51,851 INFO L130 PetriNetUnfolder]: For 1285/1299 co-relation queries the response was YES. [2022-01-19 15:07:51,853 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1060 conditions, 346 events. 13/346 cut-off events. For 1285/1299 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2081 event pairs, 5 based on Foata normal form. 6/346 useless extension candidates. Maximal degree in co-relation 978. Up to 109 conditions per place. [2022-01-19 15:07:51,854 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 40 selfloop transitions, 10 changer transitions 17/109 dead transitions. [2022-01-19 15:07:51,854 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 109 transitions, 917 flow [2022-01-19 15:07:51,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 15:07:51,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 15:07:51,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 583 transitions. [2022-01-19 15:07:51,859 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7197530864197531 [2022-01-19 15:07:51,859 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 583 transitions. [2022-01-19 15:07:51,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 583 transitions. [2022-01-19 15:07:51,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:51,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 583 transitions. [2022-01-19 15:07:51,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.3) internal successors, (583), 10 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:51,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:51,865 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:51,865 INFO L186 Difference]: Start difference. First operand has 153 places, 91 transitions, 615 flow. Second operand 10 states and 583 transitions. [2022-01-19 15:07:51,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 109 transitions, 917 flow [2022-01-19 15:07:51,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 109 transitions, 875 flow, removed 8 selfloop flow, removed 8 redundant places. [2022-01-19 15:07:51,874 INFO L242 Difference]: Finished difference. Result has 155 places, 88 transitions, 568 flow [2022-01-19 15:07:51,874 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=568, PETRI_PLACES=155, PETRI_TRANSITIONS=88} [2022-01-19 15:07:51,874 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 81 predicate places. [2022-01-19 15:07:51,875 INFO L470 AbstractCegarLoop]: Abstraction has has 155 places, 88 transitions, 568 flow [2022-01-19 15:07:51,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:51,875 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:51,875 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] [2022-01-19 15:07:51,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-19 15:07:51,875 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:51,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:51,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1232039598, now seen corresponding path program 10 times [2022-01-19 15:07:51,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:51,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540321468] [2022-01-19 15:07:51,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:51,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:51,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:51,987 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 15:07:51,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:51,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540321468] [2022-01-19 15:07:51,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540321468] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:51,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:51,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 15:07:51,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964087277] [2022-01-19 15:07:51,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:51,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 15:07:51,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:51,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 15:07:51,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 15:07:51,990 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 15:07:51,990 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 88 transitions, 568 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:51,990 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:51,990 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 15:07:51,990 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:52,201 INFO L129 PetriNetUnfolder]: 13/312 cut-off events. [2022-01-19 15:07:52,201 INFO L130 PetriNetUnfolder]: For 1246/1262 co-relation queries the response was YES. [2022-01-19 15:07:52,202 INFO L84 FinitePrefix]: Finished finitePrefix Result has 985 conditions, 312 events. 13/312 cut-off events. For 1246/1262 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1781 event pairs, 7 based on Foata normal form. 7/314 useless extension candidates. Maximal degree in co-relation 908. Up to 73 conditions per place. [2022-01-19 15:07:52,203 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 46 selfloop transitions, 9 changer transitions 12/109 dead transitions. [2022-01-19 15:07:52,203 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 109 transitions, 878 flow [2022-01-19 15:07:52,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 15:07:52,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 15:07:52,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 590 transitions. [2022-01-19 15:07:52,205 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7283950617283951 [2022-01-19 15:07:52,205 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 590 transitions. [2022-01-19 15:07:52,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 590 transitions. [2022-01-19 15:07:52,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:52,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 590 transitions. [2022-01-19 15:07:52,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 59.0) internal successors, (590), 10 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 15:07:52,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:52,207 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:52,207 INFO L186 Difference]: Start difference. First operand has 155 places, 88 transitions, 568 flow. Second operand 10 states and 590 transitions. [2022-01-19 15:07:52,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 109 transitions, 878 flow [2022-01-19 15:07:52,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 109 transitions, 822 flow, removed 21 selfloop flow, removed 9 redundant places. [2022-01-19 15:07:52,216 INFO L242 Difference]: Finished difference. Result has 151 places, 88 transitions, 576 flow [2022-01-19 15:07:52,216 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=576, PETRI_PLACES=151, PETRI_TRANSITIONS=88} [2022-01-19 15:07:52,217 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 77 predicate places. [2022-01-19 15:07:52,217 INFO L470 AbstractCegarLoop]: Abstraction has has 151 places, 88 transitions, 576 flow [2022-01-19 15:07:52,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:52,217 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:52,217 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] [2022-01-19 15:07:52,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-19 15:07:52,217 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:52,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:52,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1022226839, now seen corresponding path program 5 times [2022-01-19 15:07:52,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:52,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820834826] [2022-01-19 15:07:52,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:52,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:52,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:52,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:07:52,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:52,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820834826] [2022-01-19 15:07:52,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820834826] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:52,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:52,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 15:07:52,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751109342] [2022-01-19 15:07:52,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:52,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 15:07:52,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:52,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 15:07:52,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-19 15:07:52,362 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-01-19 15:07:52,362 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 88 transitions, 576 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:52,362 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:52,362 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-01-19 15:07:52,363 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:52,521 INFO L129 PetriNetUnfolder]: 11/286 cut-off events. [2022-01-19 15:07:52,521 INFO L130 PetriNetUnfolder]: For 1098/1112 co-relation queries the response was YES. [2022-01-19 15:07:52,522 INFO L84 FinitePrefix]: Finished finitePrefix Result has 910 conditions, 286 events. 11/286 cut-off events. For 1098/1112 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1555 event pairs, 8 based on Foata normal form. 6/287 useless extension candidates. Maximal degree in co-relation 844. Up to 86 conditions per place. [2022-01-19 15:07:52,523 INFO L132 encePairwiseOnDemand]: 73/81 looper letters, 34 selfloop transitions, 4 changer transitions 20/103 dead transitions. [2022-01-19 15:07:52,523 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 103 transitions, 832 flow [2022-01-19 15:07:52,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 15:07:52,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 15:07:52,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 541 transitions. [2022-01-19 15:07:52,529 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7421124828532236 [2022-01-19 15:07:52,529 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 541 transitions. [2022-01-19 15:07:52,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 541 transitions. [2022-01-19 15:07:52,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:52,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 541 transitions. [2022-01-19 15:07:52,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 60.111111111111114) internal successors, (541), 9 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:52,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:52,532 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:52,533 INFO L186 Difference]: Start difference. First operand has 151 places, 88 transitions, 576 flow. Second operand 9 states and 541 transitions. [2022-01-19 15:07:52,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 103 transitions, 832 flow [2022-01-19 15:07:52,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 103 transitions, 779 flow, removed 11 selfloop flow, removed 11 redundant places. [2022-01-19 15:07:52,539 INFO L242 Difference]: Finished difference. Result has 149 places, 82 transitions, 452 flow [2022-01-19 15:07:52,541 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=452, PETRI_PLACES=149, PETRI_TRANSITIONS=82} [2022-01-19 15:07:52,542 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 75 predicate places. [2022-01-19 15:07:52,542 INFO L470 AbstractCegarLoop]: Abstraction has has 149 places, 82 transitions, 452 flow [2022-01-19 15:07:52,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:52,542 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:52,542 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] [2022-01-19 15:07:52,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-19 15:07:52,543 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:52,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:52,543 INFO L85 PathProgramCache]: Analyzing trace with hash 2140697048, now seen corresponding path program 11 times [2022-01-19 15:07:52,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:52,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423470086] [2022-01-19 15:07:52,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:52,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:52,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:52,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:07:52,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:52,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423470086] [2022-01-19 15:07:52,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423470086] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:52,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:52,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 15:07:52,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551418496] [2022-01-19 15:07:52,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:52,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 15:07:52,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:52,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 15:07:52,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 15:07:52,660 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 15:07:52,660 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 82 transitions, 452 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:52,660 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:52,660 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 15:07:52,660 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:52,841 INFO L129 PetriNetUnfolder]: 11/229 cut-off events. [2022-01-19 15:07:52,841 INFO L130 PetriNetUnfolder]: For 725/738 co-relation queries the response was YES. [2022-01-19 15:07:52,842 INFO L84 FinitePrefix]: Finished finitePrefix Result has 709 conditions, 229 events. 11/229 cut-off events. For 725/738 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1031 event pairs, 7 based on Foata normal form. 6/229 useless extension candidates. Maximal degree in co-relation 670. Up to 60 conditions per place. [2022-01-19 15:07:52,843 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 40 selfloop transitions, 6 changer transitions 13/101 dead transitions. [2022-01-19 15:07:52,843 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 101 transitions, 693 flow [2022-01-19 15:07:52,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 15:07:52,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 15:07:52,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 589 transitions. [2022-01-19 15:07:52,844 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7271604938271605 [2022-01-19 15:07:52,844 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 589 transitions. [2022-01-19 15:07:52,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 589 transitions. [2022-01-19 15:07:52,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:52,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 589 transitions. [2022-01-19 15:07:52,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.9) internal successors, (589), 10 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:52,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:52,850 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:52,850 INFO L186 Difference]: Start difference. First operand has 149 places, 82 transitions, 452 flow. Second operand 10 states and 589 transitions. [2022-01-19 15:07:52,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 101 transitions, 693 flow [2022-01-19 15:07:52,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 101 transitions, 648 flow, removed 18 selfloop flow, removed 11 redundant places. [2022-01-19 15:07:52,855 INFO L242 Difference]: Finished difference. Result has 140 places, 79 transitions, 403 flow [2022-01-19 15:07:52,856 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=403, PETRI_PLACES=140, PETRI_TRANSITIONS=79} [2022-01-19 15:07:52,857 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 66 predicate places. [2022-01-19 15:07:52,858 INFO L470 AbstractCegarLoop]: Abstraction has has 140 places, 79 transitions, 403 flow [2022-01-19 15:07:52,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:52,858 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:52,858 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] [2022-01-19 15:07:52,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-19 15:07:52,858 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:52,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:52,859 INFO L85 PathProgramCache]: Analyzing trace with hash 112076268, now seen corresponding path program 12 times [2022-01-19 15:07:52,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:52,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102342515] [2022-01-19 15:07:52,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:52,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:52,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:52,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:07:52,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:52,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102342515] [2022-01-19 15:07:52,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102342515] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:52,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:52,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 15:07:52,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7659879] [2022-01-19 15:07:52,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:52,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 15:07:52,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:52,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 15:07:52,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 15:07:52,974 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 15:07:52,974 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 79 transitions, 403 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:52,974 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:52,974 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 15:07:52,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:53,160 INFO L129 PetriNetUnfolder]: 10/220 cut-off events. [2022-01-19 15:07:53,160 INFO L130 PetriNetUnfolder]: For 534/545 co-relation queries the response was YES. [2022-01-19 15:07:53,161 INFO L84 FinitePrefix]: Finished finitePrefix Result has 650 conditions, 220 events. 10/220 cut-off events. For 534/545 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 951 event pairs, 7 based on Foata normal form. 5/220 useless extension candidates. Maximal degree in co-relation 617. Up to 60 conditions per place. [2022-01-19 15:07:53,161 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 38 selfloop transitions, 7 changer transitions 11/98 dead transitions. [2022-01-19 15:07:53,161 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 98 transitions, 636 flow [2022-01-19 15:07:53,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 15:07:53,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 15:07:53,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 587 transitions. [2022-01-19 15:07:53,163 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7246913580246913 [2022-01-19 15:07:53,163 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 587 transitions. [2022-01-19 15:07:53,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 587 transitions. [2022-01-19 15:07:53,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:53,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 587 transitions. [2022-01-19 15:07:53,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.7) internal successors, (587), 10 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:53,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:53,165 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:53,165 INFO L186 Difference]: Start difference. First operand has 140 places, 79 transitions, 403 flow. Second operand 10 states and 587 transitions. [2022-01-19 15:07:53,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 98 transitions, 636 flow [2022-01-19 15:07:53,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 98 transitions, 584 flow, removed 16 selfloop flow, removed 11 redundant places. [2022-01-19 15:07:53,169 INFO L242 Difference]: Finished difference. Result has 137 places, 80 transitions, 415 flow [2022-01-19 15:07:53,170 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=415, PETRI_PLACES=137, PETRI_TRANSITIONS=80} [2022-01-19 15:07:53,170 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 63 predicate places. [2022-01-19 15:07:53,170 INFO L470 AbstractCegarLoop]: Abstraction has has 137 places, 80 transitions, 415 flow [2022-01-19 15:07:53,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:53,171 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:53,171 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] [2022-01-19 15:07:53,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-19 15:07:53,171 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:53,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:53,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1443359976, now seen corresponding path program 13 times [2022-01-19 15:07:53,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:53,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94423856] [2022-01-19 15:07:53,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:53,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:53,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:07:53,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:53,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94423856] [2022-01-19 15:07:53,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94423856] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:53,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:53,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 15:07:53,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16067685] [2022-01-19 15:07:53,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:53,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 15:07:53,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:53,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 15:07:53,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 15:07:53,293 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 15:07:53,293 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 80 transitions, 415 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:53,293 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:53,293 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 15:07:53,293 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:53,468 INFO L129 PetriNetUnfolder]: 10/204 cut-off events. [2022-01-19 15:07:53,469 INFO L130 PetriNetUnfolder]: For 458/469 co-relation queries the response was YES. [2022-01-19 15:07:53,469 INFO L84 FinitePrefix]: Finished finitePrefix Result has 603 conditions, 204 events. 10/204 cut-off events. For 458/469 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 837 event pairs, 7 based on Foata normal form. 5/203 useless extension candidates. Maximal degree in co-relation 571. Up to 60 conditions per place. [2022-01-19 15:07:53,470 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 29 selfloop transitions, 3 changer transitions 17/91 dead transitions. [2022-01-19 15:07:53,470 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 91 transitions, 588 flow [2022-01-19 15:07:53,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 15:07:53,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 15:07:53,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 580 transitions. [2022-01-19 15:07:53,471 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7160493827160493 [2022-01-19 15:07:53,472 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 580 transitions. [2022-01-19 15:07:53,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 580 transitions. [2022-01-19 15:07:53,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:53,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 580 transitions. [2022-01-19 15:07:53,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.0) internal successors, (580), 10 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:53,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:53,475 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:53,475 INFO L186 Difference]: Start difference. First operand has 137 places, 80 transitions, 415 flow. Second operand 10 states and 580 transitions. [2022-01-19 15:07:53,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 91 transitions, 588 flow [2022-01-19 15:07:53,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 91 transitions, 551 flow, removed 13 selfloop flow, removed 7 redundant places. [2022-01-19 15:07:53,478 INFO L242 Difference]: Finished difference. Result has 138 places, 74 transitions, 331 flow [2022-01-19 15:07:53,479 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=331, PETRI_PLACES=138, PETRI_TRANSITIONS=74} [2022-01-19 15:07:53,479 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 64 predicate places. [2022-01-19 15:07:53,479 INFO L470 AbstractCegarLoop]: Abstraction has has 138 places, 74 transitions, 331 flow [2022-01-19 15:07:53,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:53,479 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:53,479 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:07:53,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-19 15:07:53,480 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:53,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:53,480 INFO L85 PathProgramCache]: Analyzing trace with hash -2036479358, now seen corresponding path program 14 times [2022-01-19 15:07:53,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:53,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538108394] [2022-01-19 15:07:53,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:53,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:53,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:53,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:07:53,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:53,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538108394] [2022-01-19 15:07:53,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538108394] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:53,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:53,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 15:07:53,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895935957] [2022-01-19 15:07:53,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:53,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 15:07:53,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:53,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 15:07:53,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 15:07:53,614 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 15:07:53,614 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 74 transitions, 331 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:53,614 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:53,615 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 15:07:53,615 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:53,789 INFO L129 PetriNetUnfolder]: 7/167 cut-off events. [2022-01-19 15:07:53,789 INFO L130 PetriNetUnfolder]: For 325/334 co-relation queries the response was YES. [2022-01-19 15:07:53,790 INFO L84 FinitePrefix]: Finished finitePrefix Result has 476 conditions, 167 events. 7/167 cut-off events. For 325/334 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 567 event pairs, 0 based on Foata normal form. 4/168 useless extension candidates. Maximal degree in co-relation 445. Up to 31 conditions per place. [2022-01-19 15:07:53,790 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 26 selfloop transitions, 10 changer transitions 11/89 dead transitions. [2022-01-19 15:07:53,790 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 89 transitions, 541 flow [2022-01-19 15:07:53,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 15:07:53,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 15:07:53,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 577 transitions. [2022-01-19 15:07:53,792 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7123456790123457 [2022-01-19 15:07:53,792 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 577 transitions. [2022-01-19 15:07:53,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 577 transitions. [2022-01-19 15:07:53,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:53,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 577 transitions. [2022-01-19 15:07:53,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 57.7) internal successors, (577), 10 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:53,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:53,794 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:53,795 INFO L186 Difference]: Start difference. First operand has 138 places, 74 transitions, 331 flow. Second operand 10 states and 577 transitions. [2022-01-19 15:07:53,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 89 transitions, 541 flow [2022-01-19 15:07:53,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 89 transitions, 492 flow, removed 16 selfloop flow, removed 13 redundant places. [2022-01-19 15:07:53,798 INFO L242 Difference]: Finished difference. Result has 123 places, 74 transitions, 327 flow [2022-01-19 15:07:53,798 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=327, PETRI_PLACES=123, PETRI_TRANSITIONS=74} [2022-01-19 15:07:53,798 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 49 predicate places. [2022-01-19 15:07:53,798 INFO L470 AbstractCegarLoop]: Abstraction has has 123 places, 74 transitions, 327 flow [2022-01-19 15:07:53,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:53,799 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:53,799 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:07:53,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-19 15:07:53,799 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:53,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:53,799 INFO L85 PathProgramCache]: Analyzing trace with hash 635828710, now seen corresponding path program 15 times [2022-01-19 15:07:53,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:53,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504690364] [2022-01-19 15:07:53,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:53,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:53,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:53,922 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 15:07:53,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:53,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504690364] [2022-01-19 15:07:53,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504690364] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:53,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:53,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 15:07:53,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456456697] [2022-01-19 15:07:53,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:53,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 15:07:53,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:53,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 15:07:53,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 15:07:53,924 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 15:07:53,925 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 74 transitions, 327 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:53,925 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:53,925 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 15:07:53,925 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:54,129 INFO L129 PetriNetUnfolder]: 5/192 cut-off events. [2022-01-19 15:07:54,130 INFO L130 PetriNetUnfolder]: For 337/346 co-relation queries the response was YES. [2022-01-19 15:07:54,130 INFO L84 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 192 events. 5/192 cut-off events. For 337/346 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 773 event pairs, 4 based on Foata normal form. 4/193 useless extension candidates. Maximal degree in co-relation 488. Up to 32 conditions per place. [2022-01-19 15:07:54,131 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 41 selfloop transitions, 7 changer transitions 9/99 dead transitions. [2022-01-19 15:07:54,131 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 99 transitions, 571 flow [2022-01-19 15:07:54,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 15:07:54,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 15:07:54,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 590 transitions. [2022-01-19 15:07:54,132 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7283950617283951 [2022-01-19 15:07:54,132 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 590 transitions. [2022-01-19 15:07:54,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 590 transitions. [2022-01-19 15:07:54,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:54,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 590 transitions. [2022-01-19 15:07:54,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 59.0) internal successors, (590), 10 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 15:07:54,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:54,135 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:54,135 INFO L186 Difference]: Start difference. First operand has 123 places, 74 transitions, 327 flow. Second operand 10 states and 590 transitions. [2022-01-19 15:07:54,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 99 transitions, 571 flow [2022-01-19 15:07:54,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 99 transitions, 515 flow, removed 14 selfloop flow, removed 9 redundant places. [2022-01-19 15:07:54,138 INFO L242 Difference]: Finished difference. Result has 125 places, 76 transitions, 347 flow [2022-01-19 15:07:54,138 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=347, PETRI_PLACES=125, PETRI_TRANSITIONS=76} [2022-01-19 15:07:54,139 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 51 predicate places. [2022-01-19 15:07:54,139 INFO L470 AbstractCegarLoop]: Abstraction has has 125 places, 76 transitions, 347 flow [2022-01-19 15:07:54,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:54,140 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:54,140 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] [2022-01-19 15:07:54,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-19 15:07:54,140 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:54,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:54,140 INFO L85 PathProgramCache]: Analyzing trace with hash -625509532, now seen corresponding path program 16 times [2022-01-19 15:07:54,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:54,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289710424] [2022-01-19 15:07:54,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:54,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:54,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:07:54,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:54,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289710424] [2022-01-19 15:07:54,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289710424] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:54,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:54,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 15:07:54,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092935728] [2022-01-19 15:07:54,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:54,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 15:07:54,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:54,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 15:07:54,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 15:07:54,257 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 15:07:54,258 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 76 transitions, 347 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:54,258 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:54,258 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 15:07:54,258 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:54,429 INFO L129 PetriNetUnfolder]: 4/187 cut-off events. [2022-01-19 15:07:54,429 INFO L130 PetriNetUnfolder]: For 272/280 co-relation queries the response was YES. [2022-01-19 15:07:54,429 INFO L84 FinitePrefix]: Finished finitePrefix Result has 510 conditions, 187 events. 4/187 cut-off events. For 272/280 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 730 event pairs, 1 based on Foata normal form. 4/187 useless extension candidates. Maximal degree in co-relation 484. Up to 39 conditions per place. [2022-01-19 15:07:54,430 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 35 selfloop transitions, 10 changer transitions 9/96 dead transitions. [2022-01-19 15:07:54,430 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 96 transitions, 580 flow [2022-01-19 15:07:54,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 15:07:54,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 15:07:54,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 583 transitions. [2022-01-19 15:07:54,433 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7197530864197531 [2022-01-19 15:07:54,433 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 583 transitions. [2022-01-19 15:07:54,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 583 transitions. [2022-01-19 15:07:54,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:54,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 583 transitions. [2022-01-19 15:07:54,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.3) internal successors, (583), 10 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:54,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:54,435 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:54,435 INFO L186 Difference]: Start difference. First operand has 125 places, 76 transitions, 347 flow. Second operand 10 states and 583 transitions. [2022-01-19 15:07:54,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 96 transitions, 580 flow [2022-01-19 15:07:54,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 96 transitions, 552 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-01-19 15:07:54,438 INFO L242 Difference]: Finished difference. Result has 130 places, 77 transitions, 380 flow [2022-01-19 15:07:54,438 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=380, PETRI_PLACES=130, PETRI_TRANSITIONS=77} [2022-01-19 15:07:54,439 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 56 predicate places. [2022-01-19 15:07:54,439 INFO L470 AbstractCegarLoop]: Abstraction has has 130 places, 77 transitions, 380 flow [2022-01-19 15:07:54,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:54,439 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:54,439 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] [2022-01-19 15:07:54,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-19 15:07:54,439 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:54,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:54,441 INFO L85 PathProgramCache]: Analyzing trace with hash 383792464, now seen corresponding path program 17 times [2022-01-19 15:07:54,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:54,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347644983] [2022-01-19 15:07:54,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:54,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:54,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:07:54,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:54,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347644983] [2022-01-19 15:07:54,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347644983] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:54,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:54,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 15:07:54,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93443271] [2022-01-19 15:07:54,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:54,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 15:07:54,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:54,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 15:07:54,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 15:07:54,546 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 15:07:54,547 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 77 transitions, 380 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:54,547 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:54,547 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 15:07:54,547 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:54,702 INFO L129 PetriNetUnfolder]: 4/173 cut-off events. [2022-01-19 15:07:54,702 INFO L130 PetriNetUnfolder]: For 342/350 co-relation queries the response was YES. [2022-01-19 15:07:54,702 INFO L84 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 173 events. 4/173 cut-off events. For 342/350 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 629 event pairs, 3 based on Foata normal form. 4/173 useless extension candidates. Maximal degree in co-relation 464. Up to 32 conditions per place. [2022-01-19 15:07:54,703 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 33 selfloop transitions, 5 changer transitions 14/94 dead transitions. [2022-01-19 15:07:54,703 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 94 transitions, 579 flow [2022-01-19 15:07:54,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 15:07:54,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 15:07:54,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 584 transitions. [2022-01-19 15:07:54,704 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7209876543209877 [2022-01-19 15:07:54,704 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 584 transitions. [2022-01-19 15:07:54,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 584 transitions. [2022-01-19 15:07:54,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:54,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 584 transitions. [2022-01-19 15:07:54,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.4) internal successors, (584), 10 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:54,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:54,707 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:54,707 INFO L186 Difference]: Start difference. First operand has 130 places, 77 transitions, 380 flow. Second operand 10 states and 584 transitions. [2022-01-19 15:07:54,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 94 transitions, 579 flow [2022-01-19 15:07:54,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 94 transitions, 534 flow, removed 11 selfloop flow, removed 9 redundant places. [2022-01-19 15:07:54,710 INFO L242 Difference]: Finished difference. Result has 131 places, 74 transitions, 330 flow [2022-01-19 15:07:54,710 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=330, PETRI_PLACES=131, PETRI_TRANSITIONS=74} [2022-01-19 15:07:54,711 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 57 predicate places. [2022-01-19 15:07:54,711 INFO L470 AbstractCegarLoop]: Abstraction has has 131 places, 74 transitions, 330 flow [2022-01-19 15:07:54,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:54,711 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:54,711 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] [2022-01-19 15:07:54,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-19 15:07:54,712 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:54,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:54,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1668405252, now seen corresponding path program 18 times [2022-01-19 15:07:54,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:54,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132085357] [2022-01-19 15:07:54,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:54,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:54,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:54,816 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 15:07:54,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:54,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132085357] [2022-01-19 15:07:54,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132085357] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:54,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:54,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 15:07:54,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404774411] [2022-01-19 15:07:54,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:54,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 15:07:54,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:54,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 15:07:54,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 15:07:54,819 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 15:07:54,820 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 74 transitions, 330 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:54,820 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:54,820 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 15:07:54,820 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:54,966 INFO L129 PetriNetUnfolder]: 3/142 cut-off events. [2022-01-19 15:07:54,966 INFO L130 PetriNetUnfolder]: For 214/220 co-relation queries the response was YES. [2022-01-19 15:07:54,967 INFO L84 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 142 events. 3/142 cut-off events. For 214/220 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 399 event pairs, 0 based on Foata normal form. 3/142 useless extension candidates. Maximal degree in co-relation 376. Up to 27 conditions per place. [2022-01-19 15:07:54,967 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 24 selfloop transitions, 5 changer transitions 15/86 dead transitions. [2022-01-19 15:07:54,967 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 86 transitions, 502 flow [2022-01-19 15:07:54,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 15:07:54,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 15:07:54,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 576 transitions. [2022-01-19 15:07:54,969 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7111111111111111 [2022-01-19 15:07:54,969 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 576 transitions. [2022-01-19 15:07:54,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 576 transitions. [2022-01-19 15:07:54,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:54,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 576 transitions. [2022-01-19 15:07:54,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:54,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:54,971 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:54,971 INFO L186 Difference]: Start difference. First operand has 131 places, 74 transitions, 330 flow. Second operand 10 states and 576 transitions. [2022-01-19 15:07:54,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 86 transitions, 502 flow [2022-01-19 15:07:54,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 86 transitions, 464 flow, removed 10 selfloop flow, removed 11 redundant places. [2022-01-19 15:07:54,975 INFO L242 Difference]: Finished difference. Result has 125 places, 69 transitions, 263 flow [2022-01-19 15:07:54,975 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=263, PETRI_PLACES=125, PETRI_TRANSITIONS=69} [2022-01-19 15:07:54,976 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 51 predicate places. [2022-01-19 15:07:54,976 INFO L470 AbstractCegarLoop]: Abstraction has has 125 places, 69 transitions, 263 flow [2022-01-19 15:07:54,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:54,976 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:54,976 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:07:54,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-19 15:07:54,976 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:54,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:54,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1607529690, now seen corresponding path program 19 times [2022-01-19 15:07:54,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:54,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392379516] [2022-01-19 15:07:54,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:54,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:55,104 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 15:07:55,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:55,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392379516] [2022-01-19 15:07:55,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392379516] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:55,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:55,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 15:07:55,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446375643] [2022-01-19 15:07:55,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:55,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 15:07:55,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:55,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 15:07:55,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 15:07:55,108 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 15:07:55,108 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 69 transitions, 263 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:55,108 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:55,108 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 15:07:55,108 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:55,258 INFO L129 PetriNetUnfolder]: 0/137 cut-off events. [2022-01-19 15:07:55,258 INFO L130 PetriNetUnfolder]: For 167/167 co-relation queries the response was YES. [2022-01-19 15:07:55,258 INFO L84 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 137 events. 0/137 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 362 event pairs, 0 based on Foata normal form. 2/138 useless extension candidates. Maximal degree in co-relation 0. Up to 18 conditions per place. [2022-01-19 15:07:55,259 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 20 selfloop transitions, 7 changer transitions 14/83 dead transitions. [2022-01-19 15:07:55,259 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 83 transitions, 465 flow [2022-01-19 15:07:55,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 15:07:55,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 15:07:55,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 574 transitions. [2022-01-19 15:07:55,260 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7086419753086419 [2022-01-19 15:07:55,260 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 574 transitions. [2022-01-19 15:07:55,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 574 transitions. [2022-01-19 15:07:55,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:55,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 574 transitions. [2022-01-19 15:07:55,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 57.4) internal successors, (574), 10 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:55,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:55,262 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:55,262 INFO L186 Difference]: Start difference. First operand has 125 places, 69 transitions, 263 flow. Second operand 10 states and 574 transitions. [2022-01-19 15:07:55,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 83 transitions, 465 flow [2022-01-19 15:07:55,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 83 transitions, 388 flow, removed 9 selfloop flow, removed 16 redundant places. [2022-01-19 15:07:55,265 INFO L242 Difference]: Finished difference. Result has 113 places, 69 transitions, 244 flow [2022-01-19 15:07:55,265 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=244, PETRI_PLACES=113, PETRI_TRANSITIONS=69} [2022-01-19 15:07:55,265 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 39 predicate places. [2022-01-19 15:07:55,266 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 69 transitions, 244 flow [2022-01-19 15:07:55,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:55,266 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:07:55,266 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:07:55,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-19 15:07:55,266 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:07:55,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:07:55,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1409584476, now seen corresponding path program 20 times [2022-01-19 15:07:55,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:07:55,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451835658] [2022-01-19 15:07:55,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:07:55,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:07:55,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:07:55,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:07:55,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:07:55,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451835658] [2022-01-19 15:07:55,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451835658] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:07:55,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:07:55,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 15:07:55,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734147818] [2022-01-19 15:07:55,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:07:55,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 15:07:55,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:07:55,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 15:07:55,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 15:07:55,403 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 15:07:55,403 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 69 transitions, 244 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:55,403 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:07:55,403 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 15:07:55,403 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:07:55,536 INFO L129 PetriNetUnfolder]: 0/99 cut-off events. [2022-01-19 15:07:55,536 INFO L130 PetriNetUnfolder]: For 73/75 co-relation queries the response was YES. [2022-01-19 15:07:55,536 INFO L84 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 99 events. 0/99 cut-off events. For 73/75 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 163 event pairs, 0 based on Foata normal form. 2/100 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2022-01-19 15:07:55,537 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 0 selfloop transitions, 0 changer transitions 71/71 dead transitions. [2022-01-19 15:07:55,537 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 71 transitions, 348 flow [2022-01-19 15:07:55,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 15:07:55,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 15:07:55,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 566 transitions. [2022-01-19 15:07:55,538 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6987654320987654 [2022-01-19 15:07:55,538 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 566 transitions. [2022-01-19 15:07:55,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 566 transitions. [2022-01-19 15:07:55,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:07:55,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 566 transitions. [2022-01-19 15:07:55,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 56.6) internal successors, (566), 10 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:55,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:55,540 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:55,540 INFO L186 Difference]: Start difference. First operand has 113 places, 69 transitions, 244 flow. Second operand 10 states and 566 transitions. [2022-01-19 15:07:55,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 71 transitions, 348 flow [2022-01-19 15:07:55,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 71 transitions, 314 flow, removed 8 selfloop flow, removed 8 redundant places. [2022-01-19 15:07:55,542 INFO L242 Difference]: Finished difference. Result has 107 places, 0 transitions, 0 flow [2022-01-19 15:07:55,542 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=107, PETRI_TRANSITIONS=0} [2022-01-19 15:07:55,542 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 33 predicate places. [2022-01-19 15:07:55,543 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 0 transitions, 0 flow [2022-01-19 15:07:55,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:07:55,545 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-19 15:07:55,546 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-19 15:07:55,546 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-19 15:07:55,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-19 15:07:55,549 INFO L732 BasicCegarLoop]: Path program histogram: [20, 10, 5, 3] [2022-01-19 15:07:55,551 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 15:07:55,552 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 15:07:55,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 03:07:55 BasicIcfg [2022-01-19 15:07:55,554 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 15:07:55,555 INFO L158 Benchmark]: Toolchain (without parser) took 14398.27ms. Allocated memory was 335.5MB in the beginning and 434.1MB in the end (delta: 98.6MB). Free memory was 281.0MB in the beginning and 183.1MB in the end (delta: 97.9MB). Peak memory consumption was 196.9MB. Max. memory is 16.0GB. [2022-01-19 15:07:55,555 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 335.5MB. Free memory is still 297.4MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 15:07:55,556 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.24ms. Allocated memory is still 335.5MB. Free memory was 280.8MB in the beginning and 307.2MB in the end (delta: -26.4MB). Peak memory consumption was 17.3MB. Max. memory is 16.0GB. [2022-01-19 15:07:55,556 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.04ms. Allocated memory is still 335.5MB. Free memory was 307.2MB in the beginning and 306.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 15:07:55,556 INFO L158 Benchmark]: Boogie Preprocessor took 31.08ms. Allocated memory is still 335.5MB. Free memory was 306.2MB in the beginning and 305.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 15:07:55,557 INFO L158 Benchmark]: RCFGBuilder took 352.12ms. Allocated memory is still 335.5MB. Free memory was 305.0MB in the beginning and 292.5MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-19 15:07:55,557 INFO L158 Benchmark]: TraceAbstraction took 13699.79ms. Allocated memory was 335.5MB in the beginning and 434.1MB in the end (delta: 98.6MB). Free memory was 291.5MB in the beginning and 183.1MB in the end (delta: 108.3MB). Peak memory consumption was 209.0MB. Max. memory is 16.0GB. [2022-01-19 15:07:55,562 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 335.5MB. Free memory is still 297.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 277.24ms. Allocated memory is still 335.5MB. Free memory was 280.8MB in the beginning and 307.2MB in the end (delta: -26.4MB). Peak memory consumption was 17.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 31.04ms. Allocated memory is still 335.5MB. Free memory was 307.2MB in the beginning and 306.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 31.08ms. Allocated memory is still 335.5MB. Free memory was 306.2MB in the beginning and 305.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 352.12ms. Allocated memory is still 335.5MB. Free memory was 305.0MB in the beginning and 292.5MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 13699.79ms. Allocated memory was 335.5MB in the beginning and 434.1MB in the end (delta: 98.6MB). Free memory was 291.5MB in the beginning and 183.1MB in the end (delta: 108.3MB). Peak memory consumption was 209.0MB. 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 - PositiveResult [Line: 76]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 101 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 13.5s, OverallIterations: 38, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 8.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1856 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1856 mSDsluCounter, 4618 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5342 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4719 IncrementalHoareTripleChecker+Invalid, 4734 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 852 mSDtfsCounter, 4719 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 599 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 519 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=675occurred in iteration=23, InterpolantAutomatonStates: 375, 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: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 2356 NumberOfCodeBlocks, 2356 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 2318 ConstructedInterpolants, 0 QuantifiedInterpolants, 15060 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 38 InterpolantComputations, 38 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-19 15:07:55,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...